Merge remote-tracking branch 'upstream/develop' into json-ld

.gitignore

@@ -90,3 +90,11 @@ venv/
 #ignore avatar picture cache path
 /avatar
 
+#Ignore autotest results
+autotest-results.xml
+
+#ignore phpunit result cache
+tests/.phpunit.result.cache
+
+#ignore .php_cs (local copy)
+.php_cs

.woodpecker/.continuous-deployment.yml

@@ -9,7 +9,10 @@ depends_on:
   - database_checks
   - messages.po_check
 
-platform: releaser/release # This prevents executing this pipeline at other servers than ci.friendi.ca
+# This prevents executing this pipeline at other servers than ci.friendi.ca
+labels:
+  location: friendica
+  type: releaser
 
 skip_clone: true
 

.woodpecker/.releaser.yml

@@ -7,7 +7,10 @@ depends_on:
   - phpunit
   - code_standards_check
 
-platform: releaser/release # This prevents executing this pipeline at other servers than ci.friendi.ca
+# This prevents executing this pipeline at other servers than ci.friendi.ca
+labels:
+  location: friendica
+  type: releaser
 
 skip_clone: true
 

bin/daemon.php

@@ -26,7 +26,7 @@
  * This script was taken from http://php.net/manual/en/function.pcntl-fork.php
  */
 if (php_sapi_name() !== 'cli') {
-	header($_SERVER["SERVER_PROTOCOL"] . ' 403 Forbidden');
+	header($_SERVER['SERVER_PROTOCOL'] . ' 403 Forbidden');
 	exit();
 }
 
@@ -45,13 +45,13 @@ $longopts = ['foreground'];
 $options = getopt($shortopts, $longopts);
 
 // Ensure that daemon.php is executed from the base path of the installation
-if (!file_exists("boot.php") && (sizeof($_SERVER["argv"]) != 0)) {
+if (!file_exists('boot.php') && (sizeof($_SERVER['argv']) != 0)) {
-	$directory = dirname($_SERVER["argv"][0]);
+	$directory = dirname($_SERVER['argv'][0]);
 
-	if (substr($directory, 0, 1) != "/") {
+	if (substr($directory, 0, 1) != '/') {
-		$directory = $_SERVER["PWD"] . "/" . $directory;
+		$directory = $_SERVER['PWD'] . '/' . $directory;
 	}
-	$directory = realpath($directory . "/..");
+	$directory = realpath($directory . '/..');
 
 	chdir($directory);
 }
@@ -86,16 +86,16 @@ TXT
 
 $pidfile = DI::config()->get('system', 'pidfile');
 
-if (in_array("start", $_SERVER["argv"])) {
+if (in_array('start', $_SERVER['argv'])) {
-	$mode = "start";
+	$mode = 'start';
 }
 
-if (in_array("stop", $_SERVER["argv"])) {
+if (in_array('stop', $_SERVER['argv'])) {
-	$mode = "stop";
+	$mode = 'stop';
 }
 
-if (in_array("status", $_SERVER["argv"])) {
+if (in_array('status', $_SERVER['argv'])) {
-	$mode = "status";
+	$mode = 'status';
 }
 
 $foreground = array_key_exists('f', $options) || array_key_exists('foreground', $options);
@@ -104,7 +104,7 @@ if (!isset($mode)) {
 	die("Please use either 'start', 'stop' or 'status'.\n");
 }
 
-if (empty($_SERVER["argv"][0])) {
+if (empty($_SERVER['argv'][0])) {
 	die("Unexpected script behaviour. This message should never occur.\n");
 }
 
@@ -114,12 +114,12 @@ if (is_readable($pidfile)) {
 	$pid = intval(file_get_contents($pidfile));
 }
 
-if (empty($pid) && in_array($mode, ["stop", "status"])) {
+if (empty($pid) && in_array($mode, ['stop', 'status'])) {
 	DI::config()->set('system', 'worker_daemon_mode', false);
 	die("Pidfile wasn't found. Is the daemon running?\n");
 }
 
-if ($mode == "status") {
+if ($mode == 'status') {
 	if (posix_kill($pid, 0)) {
 		die("Daemon process $pid is running.\n");
 	}
@@ -130,12 +130,12 @@ if ($mode == "status") {
 	die("Daemon process $pid isn't running.\n");
 }
 
-if ($mode == "stop") {
+if ($mode == 'stop') {
 	posix_kill($pid, SIGTERM);
 
 	unlink($pidfile);
 
-	Logger::notice("Worker daemon process was killed", ["pid" => $pid]);
+	Logger::notice('Worker daemon process was killed', ['pid' => $pid]);
 
 	DI::config()->set('system', 'worker_daemon_mode', false);
 	die("Worker daemon process $pid was killed.\n");
@@ -145,7 +145,7 @@ if (!empty($pid) && posix_kill($pid, 0)) {
 	die("Daemon process $pid is already running.\n");
 }
 
-Logger::notice('Starting worker daemon.', ["pid" => $pid]);
+Logger::notice('Starting worker daemon.', ['pid' => $pid]);
 
 if (!$foreground) {
 	echo "Starting worker daemon.\n";
@@ -194,7 +194,7 @@ $last_cron = 0;
 // Now running as a daemon.
 while (true) {
 	if (!$do_cron && ($last_cron + $wait_interval) < time()) {
-		Logger::info('Forcing cron worker call.', ["pid" => $pid]);
+		Logger::info('Forcing cron worker call.', ['pid' => $pid]);
 		$do_cron = true;
 	}
 
@@ -214,7 +214,7 @@ while (true) {
 	}
 
 	$start = time();
-	Logger::info("Sleeping", ["pid" => $pid, 'until' => gmdate(DateTimeFormat::MYSQL, $start + $wait_interval)]);
+	Logger::info('Sleeping', ['pid' => $pid, 'until' => gmdate(DateTimeFormat::MYSQL, $start + $wait_interval)]);
 
 	do {
 		$seconds = (time() - $start);
@@ -236,10 +236,10 @@ while (true) {
 
 	if ($timeout) {
 		$do_cron = true;
-		Logger::info("Woke up after $wait_interval seconds.", ["pid" => $pid, 'sleep' => $wait_interval]);
+		Logger::info('Woke up after $wait_interval seconds.', ['pid' => $pid, 'sleep' => $wait_interval]);
 	} else {
 		$do_cron = false;
-		Logger::info("Worker jobs are calling to be forked.", ["pid" => $pid]);
+		Logger::info('Worker jobs are calling to be forked.', ['pid' => $pid]);
 	}
 }
 

bin/dev/autotest.sh

@@ -15,33 +15,34 @@
 # - TEST_SELECTION= ... Specify which tests are used to run (based on the test-labeling)
 # - XDEBUG_CONFIG=  ... Set some XDEBUG specific environment settings for development
 
-DATABASENAME=${MYSQL_DATABASE:-test}
+DATABASE_NAME=${FRIENDICA_MYSQL_DATABASE:-test}
-DATABASEUSER=${MYSQL_USERNAME:-friendica}
+DATABASE_USER=${FRIENDICA_MYSQL_USERNAME:-friendica}
-DATABASEHOST=${MYSQL_HOST:-localhost}
+DATABASE_HOST=${FRIENDICA_MYSQL_HOST:-localhost}
-BASEDIR=$PWD
+DATABASE_PASSWORD=${FRIENDICA_MYSQL_PASSWORD:-friendica}
+BASEDIR=${PWD}
 
 DBCONFIGS="mysql mariadb"
 TESTS="REDIS MEMCACHE MEMCACHED APCU NODB"
 
-export MYSQL_DATABASE="$DATABASENAME"
+export MYSQL_DATABASE="${DATABASE_NAME}"
-export MYSQL_USERNAME="$DATABASEUSER"
+export MYSQL_USERNAME="${DATABASE_USER}"
-export MYSQL_PASSWORD="friendica"
+export MYSQL_PASSWORD="${DATABASE_PASSWORD}"
 
-if [ -z "$PHP_EXE" ]; then
+if [ -z "${PHP_EXE}" ]; then
   PHP_EXE=php
 fi
-PHP=$(which "$PHP_EXE")
+PHP=$(which "${PHP_EXE}")
 # Use the Friendica internal composer
-COMPOSER="$BASEDIR/bin/composer.phar"
+COMPOSER="${BASEDIR}/bin/composer.phar"
 
 set -e
 
-_XDEBUG_CONFIG=$XDEBUG_CONFIG
+_XDEBUG_CONFIG=${XDEBUG_CONFIG}
 unset XDEBUG_CONFIG
 
 function show_syntax() {
   echo -e "Syntax: ./autotest.sh [dbconfigname] [testfile]\n" >&2
-  echo -e "\t\"dbconfigname\" can be one of: $DBCONFIGS" >&2
+  echo -e "\t\"dbconfigname\" can be one of: ${DBCONFIGS}" >&2
   echo -e "\t\"testfile\" is the name of a test file, for example lib/template.php" >&2
   echo -e "\nDatabase environment variables:\n" >&2
   echo -e "\t\"MYSQL_HOST\" Mysql Hostname (Default: localhost)" >&2
@@ -57,22 +58,22 @@ function show_syntax() {
   echo -e "\nIf no arguments are specified, all tests will be run with all database configs" >&2
 }
 
-if [ -x "$PHP" ]; then
+if [ -x "${PHP}" ]; then
-  echo "Using PHP executable $PHP"
+  echo "Using PHP executable ${PHP}"
 else
-  echo "Could not find PHP executable $PHP_EXE" >&2
+  echo "Could not find PHP executable ${PHP_EXE}" >&2
   exit 3
 fi
 
 echo "Installing depdendencies"
-$PHP "$COMPOSER" install
+${PHP} "$COMPOSER" install
 
-PHPUNIT="$BASEDIR/vendor/bin/phpunit"
+PHPUNIT="${BASEDIR}/vendor/bin/phpunit"
 
-if [ -x "$PHPUNIT" ]; then
+if [ -x "${PHPUNIT}" ]; then
-  echo "Using PHPUnit executable $PHPUNIT"
+  echo "Using PHPUnit executable ${PHPUNIT}"
 else
-  echo "Could not find PHPUnit executable after composer $PHPUNIT" >&2
+  echo "Could not find PHPUnit executable after composer ${PHPUNIT}" >&2
   exit 3
 fi
 
@@ -83,8 +84,8 @@ fi
 
 if [ "$1" ]; then
   FOUND=0
-  for DBCONFIG in $DBCONFIGS; do
+  for DBCONFIG in ${DBCONFIGS}; do
-    if [ "$1" = "$DBCONFIG" ]; then
+    if [ "$1" = "${DBCONFIG}" ]; then
       FOUND=1
       break
     fi
@@ -103,13 +104,13 @@ fi
 
 function cleanup_config() {
 
-  if [ -n "$DOCKER_CONTAINER_ID" ]; then
+  if [ -n "${DOCKER_CONTAINER_ID}" ]; then
-    echo "Kill the docker $DOCKER_CONTAINER_ID"
+    echo "Kill the docker ${DOCKER_CONTAINER_ID}"
-    docker stop "$DOCKER_CONTAINER_ID"
+    docker stop "${DOCKER_CONTAINER_ID}"
-    docker rm -f "$DOCKER_CONTAINER_ID"
+    docker rm -f "${DOCKER_CONTAINER_ID}"
   fi
 
-  cd "$BASEDIR"
+  cd "${BASEDIR}"
 
   # Restore existing config
   if [ -f config/local.config-autotest-backup.php ]; then
@@ -122,77 +123,77 @@ trap cleanup_config EXIT
 
 function execute_tests() {
   DB=$1
-  echo "Setup environment for $DB testing ..."
+  echo "Setup environment for ${DB} testing ..."
   # back to root folder
-  cd "$BASEDIR"
+  cd "${BASEDIR}"
 
   # backup current config
   if [ -f config/local.config.php ]; then
     mv config/local.config.php config/local.config-autotest-backup.php
   fi
 
-  if [ -z "$NOINSTALL" ]; then
+  if [ -z "${NOINSTALL}" ]; then
     #drop database
-    if [ "$DB" == "mysql" ]; then
+    if [ "${DB}" == "mysql" ]; then
-      if [ -n "$USEDOCKER" ]; then
+      if [ -n "${USEDOCKER}" ]; then
         echo "Fire up the mysql docker"
         DOCKER_CONTAINER_ID=$(docker run \
           -e MYSQL_ROOT_PASSWORD=friendica \
-          -e MYSQL_USER="$DATABASEUSER" \
+          -e MYSQL_USER="${DATABASE_USER}" \
           -e MYSQL_PASSWORD=friendica \
-          -e MYSQL_DATABASE="$DATABASENAME" \
+          -e MYSQL_DATABASE="${DATABASE_NAME}" \
           -d mysql)
-        DATABASEHOST=$(docker inspect --format="{{.NetworkSettings.IPAddress}}" "$DOCKER_CONTAINER_ID")
+        DATABASE_HOST=$(docker inspect --format="{{.NetworkSettings.IPAddress}}" "${DOCKER_CONTAINER_ID}")
 
       else
-        if [ -z "$DRONE" ]; then # no need to drop the DB when we are on CI
+        if [ -z "${DRONE}" ]; then # no need to drop the DB when we are on CI
           if [ "mysql" != "$(mysql --version | grep -o mysql)" ]; then
             echo "Your mysql binary is not provided by mysql"
             echo "To use the docker container set the USEDOCKER environment variable"
             exit 3
           fi
-          mysql -u "$DATABASEUSER" -pfriendica -e "DROP DATABASE IF EXISTS $DATABASENAME" -h $DATABASEHOST || true
+          mysql -u "${DATABASE_USER}" -pfriendica -e "DROP DATABASE IF EXISTS ${DATABASE_NAME}" -h ${DATABASE_HOST} || true
-          mysql -u "$DATABASEUSER" -pfriendica -e "CREATE DATABASE $DATABASENAME DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci" -h $DATABASEHOST
+          mysql -u "${DATABASE_USER}" -pfriendica -e "CREATE DATABASE ${DATABASE_NAME} DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci" -h ${DATABASE_HOST}
         else
-          DATABASEHOST=mysql
+          DATABASE_HOST=mysql
         fi
       fi
 
-      echo "Waiting for MySQL $DATABASEHOST initialization..."
+      echo "Waiting for MySQL ${DATABASE_HOST} initialization..."
-      if ! bin/wait-for-connection $DATABASEHOST 3306 300; then
+      if ! bin/wait-for-connection ${DATABASE_HOST} 3306 300; then
         echo "[ERROR] Waited 300 seconds, no response" >&2
         exit 1
       fi
 
       echo "MySQL is up."
     fi
-    if [ "$DB" == "mariadb" ]; then
+    if [ "${DB}" == "mariadb" ]; then
-      if [ -n "$USEDOCKER" ]; then
+      if [ -n "${USEDOCKER}" ]; then
         echo "Fire up the mariadb docker"
         DOCKER_CONTAINER_ID=$(docker run \
           -e MYSQL_ROOT_PASSWORD=friendica \
-          -e MYSQL_USER="$DATABASEUSER" \
+          -e MYSQL_USER="${DATABASE_USER}" \
           -e MYSQL_PASSWORD=friendica \
-          -e MYSQL_DATABASE="$DATABASENAME" \
+          -e MYSQL_DATABASE="${DATABASE_NAME}" \
           -d mariadb)
-        DATABASEHOST=$(docker inspect --format="{{.NetworkSettings.IPAddress}}" "$DOCKER_CONTAINER_ID")
+        DATABASE_HOST=$(docker inspect --format="{{.NetworkSettings.IPAddress}}" "${DOCKER_CONTAINER_ID}")
 
       else
-        if [ -z "$DRONE" ]; then # no need to drop the DB when we are on CI
+        if [ -z "${DRONE}" ]; then # no need to drop the DB when we are on CI
           if [ "MariaDB" != "$(mysql --version | grep -o MariaDB)" ]; then
             echo "Your mysql binary is not provided by mysql"
             echo "To use the docker container set the USEDOCKER environment variable"
             exit 3
           fi
-          mysql -u "$DATABASEUSER" -pfriendica -e "DROP DATABASE IF EXISTS $DATABASENAME" -h $DATABASEHOST || true
+          mysql -u "${DATABASE_USER}" -pfriendica -e "DROP DATABASE IF EXISTS ${DATABASE_NAME}" -h ${DATABASE_HOST} || true
-          mysql -u "$DATABASEUSER" -pfriendica -e "CREATE DATABASE $DATABASENAME DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci" -h $DATABASEHOST
+          mysql -u "${DATABASE_USER}" -pfriendica -e "CREATE DATABASE ${DATABASE_NAME} DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci" -h ${DATABASE_HOST}
         else
-          DATABASEHOST=mariadb
+          DATABASE_HOST=mariadb
         fi
       fi
 
-      echo "Waiting for MariaDB $DATABASEHOST initialization..."
+      echo "Waiting for MariaDB ${DATABASE_HOST} initialization..."
-      if ! bin/wait-for-connection $DATABASEHOST 3306 300; then
+      if ! bin/wait-for-connection ${DATABASE_HOST} 3306 300; then
         echo "[ERROR] Waited 300 seconds, no response" >&2
         exit 1
       fi
@@ -200,28 +201,28 @@ function execute_tests() {
       echo "MariaDB is up."
     fi
 
-    if [ -n "$USEDOCKER" ]; then
+    if [ -n "${USEDOCKER}" ]; then
       echo "Initialize database..."
-      docker exec $DOCKER_CONTAINER_ID mysql -u root -pfriendica -e 'CREATE DATABASE IF NOT EXISTS $DATABASENAME;'
+      docker exec ${DOCKER_CONTAINER_ID} mysql -u root -pfriendica -e "CREATE DATABASE IF NOT EXISTS ${DATABASE_NAME};"
     fi
 
-    export MYSQL_HOST="$DATABASEHOST"
+    export MYSQL_HOST="${DATABASE_HOST}"
 
     #call installer
     echo "Installing Friendica..."
-    "$PHP" ./bin/console.php autoinstall --dbuser="$DATABASEUSER" --dbpass=friendica --dbdata="$DATABASENAME" --dbhost="$DATABASEHOST" --url=https://friendica.local --admin=admin@friendica.local
+    "${PHP}" ./bin/console.php autoinstall --dbuser="${DATABASE_USER}" --dbpass=friendica --dbdata="${DATABASE_NAME}" --dbhost="${DATABASE_HOST}" --url=https://friendica.local --admin=admin@friendica.local
   fi
 
   #test execution
   echo "Testing..."
   rm -fr "coverage-html"
   mkdir "coverage-html"
-  if [[ "$_XDEBUG_CONFIG" ]]; then
+  if [[ "${_XDEBUG_CONFIG}" ]]; then
-    export XDEBUG_CONFIG=$_XDEBUG_CONFIG
+    export XDEBUG_CONFIG=${_XDEBUG_CONFIG}
   fi
 
   COVER=''
-  if [ -z "$NOCOVERAGE" ]; then
+  if [ -z "${NOCOVERAGE}" ]; then
     COVER="--coverage-clover tests/autotest-clover.xml"
   else
     echo "No coverage"
@@ -229,51 +230,51 @@ function execute_tests() {
 
   # per default, there is no cache installed
   GROUP='--exclude-group REDIS,MEMCACHE,MEMCACHED,APCU'
-  if [ "$TEST_SELECTION" == "REDIS" ]; then
+  if [ "${TEST_SELECTION}" == "REDIS" ]; then
     GROUP="--group REDIS"
   fi
-  if [ "$TEST_SELECTION" == "MEMCACHE" ]; then
+  if [ "${TEST_SELECTION}" == "MEMCACHE" ]; then
     GROUP="--group MEMCACHE"
   fi
-  if [ "$TEST_SELECTION" == "MEMCACHED" ]; then
+  if [ "${TEST_SELECTION}" == "MEMCACHED" ]; then
     GROUP="--group MEMCACHED"
   fi
-  if [ "$TEST_SELECTION" == "APCU" ]; then
+  if [ "${TEST_SELECTION}" == "APCU" ]; then
     GROUP="--group APCU"
   fi
-  if [ "$TEST_SELECTION" == "NODB" ]; then
+  if [ "${TEST_SELECTION}" == "NODB" ]; then
     GROUP="--exclude-group DB,SLOWDB"
   fi
 
-  INPUT="$BASEDIR/tests"
+  INPUT="${BASEDIR}/tests"
   if [ -n "$2" ]; then
-    INPUT="$INPUT/$2"
+    INPUT="${INPUT}/$2"
   fi
 
-  echo "${PHPUNIT[@]}" --configuration tests/phpunit.xml $GROUP $COVER --log-junit "autotest-results.xml" "$INPUT" "$3"
+  echo "${PHPUNIT[@]}" --configuration tests/phpunit.xml ${GROUP} ${COVER} --log-junit "autotest-results.xml" "${INPUT}" "$3"
-  "${PHPUNIT[@]}" --configuration tests/phpunit.xml $GROUP $COVER --log-junit "autotest-results.xml" "$INPUT" "$3"
+  "${PHPUNIT[@]}" --configuration tests/phpunit.xml ${GROUP} ${COVER} --log-junit "autotest-results.xml" "${INPUT}" "$3"
   RESULT=$?
 
-  if [ -n "$DOCKER_CONTAINER_ID" ]; then
+  if [ -n "${DOCKER_CONTAINER_ID}" ]; then
-    echo "Kill the docker $DOCKER_CONTAINER_ID"
+    echo "Kill the docker ${DOCKER_CONTAINER_ID}"
-    docker stop $DOCKER_CONTAINER_ID
+    docker stop ${DOCKER_CONTAINER_ID}
-    docker rm -f $DOCKER_CONTAINER_ID
+    docker rm -f ${DOCKER_CONTAINER_ID}
-    unset $DOCKER_CONTAINER_ID
+    unset ${DOCKER_CONTAINER_ID}
   fi
 }
 
 #
 # Start the test execution
 #
-if [ -z "$1" ] && [ -n "$TEST_SELECTION" ]; then
+if [ -z "$1" ] && [ -n "${TEST_SELECTION}" ]; then
   # run all known database configs
-  for DBCONFIG in $DBCONFIGS; do
+  for DBCONFIG in ${DBCONFIGS}; do
-    execute_tests "$DBCONFIG"
+    execute_tests "${DBCONFIG}"
   done
 else
   FILENAME="$2"
-  if [ -n "$2" ] && [ ! -f "tests/$FILENAME" ] && [ "${FILENAME:0:2}" != "--" ]; then
+  if [ -n "$2" ] && [ ! -f "tests/${FILENAME}" ] && [ "${FILENAME:0:2}" != "--" ]; then
-    FILENAME="../$FILENAME"
+    FILENAME="../${FILENAME}"
   fi
-  execute_tests "$1" "$FILENAME" "$3"
+  execute_tests "$1" "${FILENAME}" "$3"
 fi

boot.php

@@ -87,8 +87,8 @@ define('PRIORITIES', [PRIORITY_CRITICAL, PRIORITY_HIGH, PRIORITY_MEDIUM, PRIORIT
 /* @}*/
 
 // Normally this constant is defined - but not if "pcntl" isn't installed
-if (!defined("SIGTERM")) {
+if (!defined('SIGTERM')) {
-	define("SIGTERM", 15);
+	define('SIGTERM', 15);
 }
 
 /**
@@ -117,6 +117,7 @@ function local_user()
 	if (!empty($_SESSION['authenticated']) && !empty($_SESSION['uid'])) {
 		return intval($_SESSION['uid']);
 	}
+
 	return false;
 }
 
@@ -169,7 +170,7 @@ function remote_user()
  *
  * @param string $s - Text of notice
  */
-function notice($s)
+function notice(string $s)
 {
 	if (empty($_SESSION)) {
 		return;
@@ -189,7 +190,7 @@ function notice($s)
  *
  * @param string $s - Text of notice
  */
-function info($s)
+function info(string $s)
 {
 	if (empty($_SESSION)) {
 		return;

composer.lock

@@ -545,12 +545,12 @@
             },
             "type": "library",
             "autoload": {
-                "psr-4": {
-                    "DivineOmega\\PasswordExposed\\": "src/"
-                },
                 "files": [
                     "src/PasswordExposedFunction.php"
-                ]
+                ],
+                "psr-4": {
+                    "DivineOmega\\PasswordExposed\\": "src/"
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -587,12 +587,12 @@
             },
             "type": "library",
             "autoload": {
-                "psr-0": {
-                    "HTMLPurifier": "library/"
-                },
                 "files": [
                     "library/HTMLPurifier.composer.php"
                 ],
+                "psr-0": {
+                    "HTMLPurifier": "library/"
+                },
                 "exclude-from-classmap": [
                     "/library/HTMLPurifier/Language/"
                 ]
@@ -839,24 +839,24 @@
         },
         {
             "name": "guzzlehttp/guzzle",
-            "version": "6.5.5",
+            "version": "6.5.8",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/guzzle.git",
-                "reference": "9d4290de1cfd701f38099ef7e183b64b4b7b0c5e"
+                "reference": "a52f0440530b54fa079ce76e8c5d196a42cad981"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/guzzle/zipball/9d4290de1cfd701f38099ef7e183b64b4b7b0c5e",
+                "url": "https://api.github.com/repos/guzzle/guzzle/zipball/a52f0440530b54fa079ce76e8c5d196a42cad981",
-                "reference": "9d4290de1cfd701f38099ef7e183b64b4b7b0c5e",
+                "reference": "a52f0440530b54fa079ce76e8c5d196a42cad981",
                 "shasum": ""
             },
             "require": {
                 "ext-json": "*",
                 "guzzlehttp/promises": "^1.0",
-                "guzzlehttp/psr7": "^1.6.1",
+                "guzzlehttp/psr7": "^1.9",
                 "php": ">=5.5",
-                "symfony/polyfill-intl-idn": "^1.17.0"
+                "symfony/polyfill-intl-idn": "^1.17"
             },
             "require-dev": {
                 "ext-curl": "*",
@@ -873,22 +873,52 @@
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "GuzzleHttp\\": "src/"
-                },
                 "files": [
                     "src/functions_include.php"
-                ]
+                ],
+                "psr-4": {
+                    "GuzzleHttp\\": "src/"
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
                 "MIT"
             ],
             "authors": [
+                {
+                    "name": "Graham Campbell",
+                    "email": "hello@gjcampbell.co.uk",
+                    "homepage": "https://github.com/GrahamCampbell"
+                },
                 {
                     "name": "Michael Dowling",
                     "email": "mtdowling@gmail.com",
                     "homepage": "https://github.com/mtdowling"
+                },
+                {
+                    "name": "Jeremy Lindblom",
+                    "email": "jeremeamia@gmail.com",
+                    "homepage": "https://github.com/jeremeamia"
+                },
+                {
+                    "name": "George Mponos",
+                    "email": "gmponos@gmail.com",
+                    "homepage": "https://github.com/gmponos"
+                },
+                {
+                    "name": "Tobias Nyholm",
+                    "email": "tobias.nyholm@gmail.com",
+                    "homepage": "https://github.com/Nyholm"
+                },
+                {
+                    "name": "Márk Sági-Kazár",
+                    "email": "mark.sagikazar@gmail.com",
+                    "homepage": "https://github.com/sagikazarmark"
+                },
+                {
+                    "name": "Tobias Schultze",
+                    "email": "webmaster@tubo-world.de",
+                    "homepage": "https://github.com/Tobion"
                 }
             ],
             "description": "Guzzle is a PHP HTTP client library",
@@ -902,7 +932,21 @@
                 "rest",
                 "web service"
             ],
-            "time": "2020-06-16T21:01:06+00:00"
+            "funding": [
+                {
+                    "url": "https://github.com/GrahamCampbell",
+                    "type": "github"
+                },
+                {
+                    "url": "https://github.com/Nyholm",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/guzzlehttp/guzzle",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2022-06-20T22:16:07+00:00"
         },
         {
             "name": "guzzlehttp/promises",
@@ -931,12 +975,12 @@
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "GuzzleHttp\\Promise\\": "src/"
-                },
                 "files": [
                     "src/functions_include.php"
-                ]
+                ],
+                "psr-4": {
+                    "GuzzleHttp\\Promise\\": "src/"
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -986,16 +1030,16 @@
         },
         {
             "name": "guzzlehttp/psr7",
-            "version": "1.8.3",
+            "version": "1.9.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/psr7.git",
-                "reference": "1afdd860a2566ed3c2b0b4a3de6e23434a79ec85"
+                "reference": "e98e3e6d4f86621a9b75f623996e6bbdeb4b9318"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/psr7/zipball/1afdd860a2566ed3c2b0b4a3de6e23434a79ec85",
+                "url": "https://api.github.com/repos/guzzle/psr7/zipball/e98e3e6d4f86621a9b75f623996e6bbdeb4b9318",
-                "reference": "1afdd860a2566ed3c2b0b4a3de6e23434a79ec85",
+                "reference": "e98e3e6d4f86621a9b75f623996e6bbdeb4b9318",
                 "shasum": ""
             },
             "require": {
@@ -1016,16 +1060,16 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.7-dev"
+                    "dev-master": "1.9-dev"
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "GuzzleHttp\\Psr7\\": "src/"
-                },
                 "files": [
                     "src/functions_include.php"
-                ]
+                ],
+                "psr-4": {
+                    "GuzzleHttp\\Psr7\\": "src/"
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -1088,7 +1132,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-10-05T13:56:00+00:00"
+            "time": "2022-06-20T21:43:03+00:00"
         },
         {
             "name": "league/html-to-markdown",
@@ -1471,12 +1515,12 @@
             },
             "type": "library",
             "autoload": {
-                "classmap": [
-                    "Mobile_Detect.php"
-                ],
                 "psr-0": {
                     "Detection": "namespaced/"
-                }
+                },
+                "classmap": [
+                    "Mobile_Detect.php"
+                ]
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -1611,12 +1655,12 @@
             },
             "type": "library",
             "autoload": {
-                "psr-4": {
-                    "FastRoute\\": "src/"
-                },
                 "files": [
                     "src/functions.php"
-                ]
+                ],
+                "psr-4": {
+                    "FastRoute\\": "src/"
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -3803,16 +3847,16 @@
         },
         {
             "name": "symfony/polyfill-intl-idn",
-            "version": "v1.23.0",
+            "version": "v1.26.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-intl-idn.git",
-                "reference": "65bd267525e82759e7d8c4e8ceea44f398838e65"
+                "reference": "59a8d271f00dd0e4c2e518104cc7963f655a1aa8"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/polyfill-intl-idn/zipball/65bd267525e82759e7d8c4e8ceea44f398838e65",
+                "url": "https://api.github.com/repos/symfony/polyfill-intl-idn/zipball/59a8d271f00dd0e4c2e518104cc7963f655a1aa8",
-                "reference": "65bd267525e82759e7d8c4e8ceea44f398838e65",
+                "reference": "59a8d271f00dd0e4c2e518104cc7963f655a1aa8",
                 "shasum": ""
             },
             "require": {
@@ -3826,7 +3870,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-main": "1.23-dev"
+                    "dev-main": "1.26-dev"
                 },
                 "thanks": {
                     "name": "symfony/polyfill",
@@ -3834,12 +3878,12 @@
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "Symfony\\Polyfill\\Intl\\Idn\\": ""
-                },
                 "files": [
                     "bootstrap.php"
-                ]
+                ],
+                "psr-4": {
+                    "Symfony\\Polyfill\\Intl\\Idn\\": ""
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -3883,20 +3927,20 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-05-27T09:27:20+00:00"
+            "time": "2022-05-24T11:49:31+00:00"
         },
         {
             "name": "symfony/polyfill-intl-normalizer",
-            "version": "v1.23.0",
+            "version": "v1.26.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-intl-normalizer.git",
-                "reference": "8590a5f561694770bdcd3f9b5c69dde6945028e8"
+                "reference": "219aa369ceff116e673852dce47c3a41794c14bd"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/polyfill-intl-normalizer/zipball/8590a5f561694770bdcd3f9b5c69dde6945028e8",
+                "url": "https://api.github.com/repos/symfony/polyfill-intl-normalizer/zipball/219aa369ceff116e673852dce47c3a41794c14bd",
-                "reference": "8590a5f561694770bdcd3f9b5c69dde6945028e8",
+                "reference": "219aa369ceff116e673852dce47c3a41794c14bd",
                 "shasum": ""
             },
             "require": {
@@ -3908,7 +3952,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-main": "1.23-dev"
+                    "dev-main": "1.26-dev"
                 },
                 "thanks": {
                     "name": "symfony/polyfill",
@@ -3916,12 +3960,12 @@
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "Symfony\\Polyfill\\Intl\\Normalizer\\": ""
-                },
                 "files": [
                     "bootstrap.php"
                 ],
+                "psr-4": {
+                    "Symfony\\Polyfill\\Intl\\Normalizer\\": ""
+                },
                 "classmap": [
                     "Resources/stubs"
                 ]
@@ -3964,7 +4008,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-02-19T12:13:01+00:00"
+            "time": "2022-05-24T11:49:31+00:00"
         },
         {
             "name": "symfony/polyfill-php56",
@@ -4033,16 +4077,16 @@
         },
         {
             "name": "symfony/polyfill-php72",
-            "version": "v1.23.0",
+            "version": "v1.26.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-php72.git",
-                "reference": "9a142215a36a3888e30d0a9eeea9766764e96976"
+                "reference": "bf44a9fd41feaac72b074de600314a93e2ae78e2"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/polyfill-php72/zipball/9a142215a36a3888e30d0a9eeea9766764e96976",
+                "url": "https://api.github.com/repos/symfony/polyfill-php72/zipball/bf44a9fd41feaac72b074de600314a93e2ae78e2",
-                "reference": "9a142215a36a3888e30d0a9eeea9766764e96976",
+                "reference": "bf44a9fd41feaac72b074de600314a93e2ae78e2",
                 "shasum": ""
             },
             "require": {
@@ -4051,7 +4095,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-main": "1.23-dev"
+                    "dev-main": "1.26-dev"
                 },
                 "thanks": {
                     "name": "symfony/polyfill",
@@ -4059,12 +4103,12 @@
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "Symfony\\Polyfill\\Php72\\": ""
-                },
                 "files": [
                     "bootstrap.php"
-                ]
+                ],
+                "psr-4": {
+                    "Symfony\\Polyfill\\Php72\\": ""
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -4102,7 +4146,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-05-27T09:17:38+00:00"
+            "time": "2022-05-24T11:49:31+00:00"
         },
         {
             "name": "ua-parser/uap-php",
@@ -4865,12 +4909,12 @@
             },
             "type": "library",
             "autoload": {
-                "psr-4": {
-                    "DeepCopy\\": "src/DeepCopy/"
-                },
                 "files": [
                     "src/DeepCopy/deep_copy.php"
-                ]
+                ],
+                "psr-4": {
+                    "DeepCopy\\": "src/DeepCopy/"
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -5618,11 +5662,11 @@
                 }
             },
             "autoload": {
-                "classmap": [
-                    "src/"
-                ],
                 "files": [
                     "src/Framework/Assert/Functions.php"
+                ],
+                "classmap": [
+                    "src/"
                 ]
             },
             "notification-url": "https://packagist.org/downloads/",
@@ -6586,12 +6630,12 @@
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "Symfony\\Polyfill\\Ctype\\": ""
-                },
                 "files": [
                     "bootstrap.php"
-                ]
+                ],
+                "psr-4": {
+                    "Symfony\\Polyfill\\Ctype\\": ""
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [

database.sql

@@ -1,6 +1,6 @@
 -- ------------------------------------------
 -- Friendica 2022.09-dev (Giant Rhubarb)
--- DB_UPDATE_VERSION 1469
+-- DB_UPDATE_VERSION 1473
 -- ------------------------------------------
 
 
@@ -297,6 +297,7 @@ CREATE TABLE IF NOT EXISTS `2fa_trusted_browser` (
 	`cookie_hash` varchar(80) NOT NULL COMMENT 'Trusted cookie hash',
 	`uid` mediumint unsigned NOT NULL COMMENT 'User ID',
 	`user_agent` text COMMENT 'User agent string',
+	`trusted` boolean NOT NULL DEFAULT '1' COMMENT 'Whenever this browser should be trusted or not',
 	`created` datetime NOT NULL COMMENT 'Datetime the trusted browser was recorded',
 	`last_used` datetime COMMENT 'Datetime the trusted browser was last used',
 	 PRIMARY KEY(`cookie_hash`),
@@ -1216,13 +1217,13 @@ CREATE TABLE IF NOT EXISTS `post-link` (
 CREATE TABLE IF NOT EXISTS `post-media` (
 	`id` int unsigned NOT NULL auto_increment COMMENT 'sequential ID',
 	`uri-id` int unsigned NOT NULL COMMENT 'Id of the item-uri table entry that contains the item uri',
-	`url` varbinary(511) NOT NULL COMMENT 'Media URL',
+	`url` varbinary(1024) NOT NULL COMMENT 'Media URL',
 	`type` tinyint unsigned NOT NULL DEFAULT 0 COMMENT 'Media type',
 	`mimetype` varchar(60) COMMENT '',
 	`height` smallint unsigned COMMENT 'Height of the media',
 	`width` smallint unsigned COMMENT 'Width of the media',
-	`size` int unsigned COMMENT 'Media size',
+	`size` bigint unsigned COMMENT 'Media size',
-	`preview` varbinary(255) COMMENT 'Preview URL',
+	`preview` varbinary(512) COMMENT 'Preview URL',
 	`preview-height` smallint unsigned COMMENT 'Height of the preview picture',
 	`preview-width` smallint unsigned COMMENT 'Width of the preview picture',
 	`description` text COMMENT '',
@@ -1234,7 +1235,7 @@ CREATE TABLE IF NOT EXISTS `post-media` (
 	`publisher-name` varchar(255) COMMENT 'Name of the publisher of the media',
 	`publisher-image` varbinary(255) COMMENT 'Image of the publisher of the media',
 	 PRIMARY KEY(`id`),
-	 UNIQUE INDEX `uri-id-url` (`uri-id`,`url`),
+	 UNIQUE INDEX `uri-id-url` (`uri-id`,`url`(512)),
 	 INDEX `uri-id-id` (`uri-id`,`id`),
 	FOREIGN KEY (`uri-id`) REFERENCES `item-uri` (`id`) ON UPDATE RESTRICT ON DELETE CASCADE
 ) DEFAULT COLLATE utf8mb4_general_ci COMMENT='Attached media';

doc/Accesskeys.md

@@ -82,6 +82,7 @@ General
 ../settings
 ---------
 * o - Account
+* 2 - Two-factor authentication
 * p - Profiles
 * t - Additional features
 * w - Social Networks

doc/database/db_2fa_trusted_browser.md

@@ -7,10 +7,11 @@ Fields
 ------
 
 | Field       | Description                                    | Type               | Null | Key | Default | Extra |
-| ----------- | ------------------------------------------ | ------------------ | ---- | --- | ------- | ----- |
+| ----------- | ---------------------------------------------- | ------------------ | ---- | --- | ------- | ----- |
 | cookie_hash | Trusted cookie hash                            | varchar(80)        | NO   | PRI | NULL    |       |
 | uid         | User ID                                        | mediumint unsigned | NO   |     | NULL    |       |
 | user_agent  | User agent string                              | text               | YES  |     | NULL    |       |
+| trusted     | Whenever this browser should be trusted or not | boolean            | NO   |     | 1       |       |
 | created     | Datetime the trusted browser was recorded      | datetime           | NO   |     | NULL    |       |
 | last_used   | Datetime the trusted browser was last used     | datetime           | YES  |     | NULL    |       |
 

doc/database/db_post-media.md

@@ -10,13 +10,13 @@ Fields
 | --------------- | --------------------------------------------------------- | ----------------- | ---- | --- | ------- | -------------- |
 | id              | sequential ID                                             | int unsigned      | NO   | PRI | NULL    | auto_increment |
 | uri-id          | Id of the item-uri table entry that contains the item uri | int unsigned      | NO   |     | NULL    |                |
-| url             | Media URL                                                 | varbinary(511)    | NO   |     | NULL    |                |
+| url             | Media URL                                                 | varbinary(1024)   | NO   |     | NULL    |                |
 | type            | Media type                                                | tinyint unsigned  | NO   |     | 0       |                |
 | mimetype        |                                                           | varchar(60)       | YES  |     | NULL    |                |
 | height          | Height of the media                                       | smallint unsigned | YES  |     | NULL    |                |
 | width           | Width of the media                                        | smallint unsigned | YES  |     | NULL    |                |
-| size            | Media size                                                | int unsigned      | YES  |     | NULL    |                |
+| size            | Media size                                                | bigint unsigned   | YES  |     | NULL    |                |
-| preview         | Preview URL                                               | varbinary(255)    | YES  |     | NULL    |                |
+| preview         | Preview URL                                               | varbinary(512)    | YES  |     | NULL    |                |
 | preview-height  | Height of the preview picture                             | smallint unsigned | YES  |     | NULL    |                |
 | preview-width   | Width of the preview picture                              | smallint unsigned | YES  |     | NULL    |                |
 | description     |                                                           | text              | YES  |     | NULL    |                |
@@ -32,9 +32,9 @@ Indexes
 ------------
 
 | Name       | Fields                   |
-| ---------- | ------------------- |
+| ---------- | ------------------------ |
 | PRIMARY    | id                       |
-| uri-id-url | UNIQUE, uri-id, url |
+| uri-id-url | UNIQUE, uri-id, url(512) |
 | uri-id-id  | uri-id, id               |
 
 Foreign Keys

mod/display.php

@@ -302,7 +302,7 @@ function display_content(App $a, $update = false, $update_uid = 0)
 
 	// Preparing the meta header
 	$description = trim(BBCode::toPlaintext($item['body']));
-	$title = trim(BBCode::toPlaintext($item['title']));
+	$title = trim(BBCode::toPlaintext($item['title'] ?? ''));
 	$author_name = $item['author-name'];
 
 	$image = DI::baseUrl()->remove($item['author-avatar']);

mod/editpost.php

@@ -83,7 +83,7 @@ function editpost_content(App $a)
 
 	Hook::callAll('jot_tool', $jotplugins);
 
-	$tpl = Renderer::getMarkupTemplate("jot.tpl");
+	$tpl = Renderer::getMarkupTemplate('jot.tpl');
 	$o .= Renderer::replaceMacros($tpl, [
 		'$is_edit' => true,
 		'$return_path' => '/display/' . $item['guid'],

mod/fbrowser.php

@@ -47,7 +47,7 @@ function fbrowser_content(App $a)
 	}
 
 	// Needed to match the correct template in a module that uses a different theme than the user/site/default
-	$theme = Strings::sanitizeFilePathItem($_GET['theme'] ?? null);
+	$theme = Strings::sanitizeFilePathItem($_GET['theme'] ?? '');
 	if ($theme && is_file("view/theme/$theme/config.php")) {
 		$a->setCurrentTheme($theme);
 	}

mod/item.php

@@ -439,8 +439,13 @@ function item_post(App $a) {
 				// Ensure to only modify attachments that you own
 				$srch = '<' . intval($contact_id) . '>';
 
-				$condition = ['allow_cid' => $srch, 'allow_gid' => '', 'deny_cid' => '', 'deny_gid' => '',
+				$condition = [
-						'id' => $attach];
+					'allow_cid' => $srch,
+					'allow_gid' => '',
+					'deny_cid' => '',
+					'deny_gid' => '',
+					'id' => $attach,
+				];
 				if (!Attach::exists($condition)) {
 					continue;
 				}
@@ -520,7 +525,7 @@ function item_post(App $a) {
 		$origin = $_REQUEST['origin'];
 	}
 
-	$uri = Item::newURI($api_source ? $profile_uid : $uid, $guid);
+	$uri = Item::newURI($guid);
 
 	// Fallback so that we alway have a parent uri
 	if (!$thr_parent_uri || !$toplevel_item_id) {

mod/photos.php

@@ -187,7 +187,7 @@ function photos_post(App $a)
 	}
 
 	if (DI::args()->getArgc() > 3 && DI::args()->getArgv()[2] === 'album') {
-		if (!Strings::isHex(DI::args()->getArgv()[3])) {
+		if (!Strings::isHex(DI::args()->getArgv()[3] ?? '')) {
 			DI::baseUrl()->redirect('photos/' . $user['nickname'] . '/album');
 		}
 		$album = hex2bin(DI::args()->getArgv()[3]);
@@ -360,7 +360,7 @@ function photos_post(App $a)
 		if (DBA::isResult($photos) && !$item_id) {
 			// Create item container
 			$title = '';
-			$uri = Item::newURI($page_owner_uid);
+			$uri = Item::newURI();
 
 			$arr = [];
 			$arr['guid']          = System::createUUID();
@@ -524,7 +524,7 @@ function photos_post(App $a)
 
 			if (count($taginfo)) {
 				foreach ($taginfo as $tagged) {
-					$uri = Item::newURI($page_owner_uid);
+					$uri = Item::newURI();
 
 					$arr = [];
 					$arr['guid']          = System::createUUID();
@@ -728,7 +728,7 @@ function photos_post(App $a)
 		$smallest = 2;
 	}
 
-	$uri = Item::newURI($page_owner_uid);
+	$uri = Item::newURI();
 
 	// Create item container
 	$lat = $lon = null;
@@ -892,7 +892,7 @@ function photos_content(App $a)
 			return;
 		}
 
-		$selname = Strings::isHex($datum) ? hex2bin($datum) : '';
+		$selname = (!is_null($datum) && Strings::isHex($datum)) ? hex2bin($datum) : '';
 
 		$albumselect = '';
 
@@ -954,7 +954,7 @@ function photos_content(App $a)
 	// Display a single photo album
 	if ($datatype === 'album') {
 		// if $datum is not a valid hex, redirect to the default page
-		if (!Strings::isHex($datum)) {
+		if (is_null($datum) || !Strings::isHex($datum)) {
 			DI::baseUrl()->redirect('photos/' . $user['nickname']. '/album');
 		}
 		$album = hex2bin($datum);
@@ -977,7 +977,7 @@ function photos_content(App $a)
 
 		/// @TODO I have seen this many times, maybe generalize it script-wide and encapsulate it?
 		$order_field = $_GET['order'] ?? '';
-		if ($order_field === 'posted') {
+		if ($order_field === 'created') {
 			$order = 'ASC';
 		} else {
 			$order = 'DESC';
@@ -1031,10 +1031,10 @@ function photos_content(App $a)
 			$drop = [DI::l10n()->t('Drop Album'), 'photos/' . $user['nickname'] . '/album/' . bin2hex($album) . '/drop'];
 		}
 
-		if ($order_field === 'posted') {
+		if ($order_field === 'created') {
 			$order =  [DI::l10n()->t('Show Newest First'), 'photos/' . $user['nickname'] . '/album/' . bin2hex($album), 'oldest'];
 		} else {
-			$order = [DI::l10n()->t('Show Oldest First'), 'photos/' . $user['nickname'] . '/album/' . bin2hex($album) . '?order=posted', 'newest'];
+			$order = [DI::l10n()->t('Show Oldest First'), 'photos/' . $user['nickname'] . '/album/' . bin2hex($album) . '?order=created', 'newest'];
 		}
 
 		$photos = [];
@@ -1054,7 +1054,7 @@ function photos_content(App $a)
 					'id' => $rr['id'],
 					'twist' => ' ' . ($twist ? 'rotleft' : 'rotright') . rand(2,4),
 					'link' => 'photos/' . $user['nickname'] . '/image/' . $rr['resource-id']
-						. ($order_field === 'posted' ? '?order=posted' : ''),
+						. ($order_field === 'created' ? '?order=created' : ''),
 					'title' => DI::l10n()->t('View Photo'),
 					'src' => 'photo/' . $rr['resource-id'] . '-' . $rr['scale'] . '.' .$ext,
 					'alt' => $imgalt_e,
@@ -1122,7 +1122,7 @@ function photos_content(App $a)
 		if ($cmd === 'view' && !DI::config()->get('system', 'no_count', false)) {
 			$order_field = $_GET['order'] ?? '';
 
-			if ($order_field === 'posted') {
+			if ($order_field === 'created') {
 				$params = ['order' => [$order_field]];
 			} elseif (!empty($order_field)) {
 				$params = ['order' => [$order_field => true]];
@@ -1150,10 +1150,10 @@ function photos_content(App $a)
 				}
 
 				if (!is_null($prv)) {
-					$prevlink = 'photos/' . $user['nickname'] . '/image/' . $prvnxt[$prv]['resource-id'] . ($order_field === 'posted' ? '?order=posted' : '');
+					$prevlink = 'photos/' . $user['nickname'] . '/image/' . $prvnxt[$prv]['resource-id'] . ($order_field === 'created' ? '?order=created' : '');
 				}
 				if (!is_null($nxt)) {
-					$nextlink = 'photos/' . $user['nickname'] . '/image/' . $prvnxt[$nxt]['resource-id'] . ($order_field === 'posted' ? '?order=posted' : '');
+					$nextlink = 'photos/' . $user['nickname'] . '/image/' . $prvnxt[$nxt]['resource-id'] . ($order_field === 'created' ? '?order=created' : '');
 				}
 
 				$tpl = Renderer::getMarkupTemplate('photo_edit_head.tpl');

mod/tagger.php

@@ -73,7 +73,7 @@ function tagger_content(App $a) {
 		return;
 	}
 
-	$uri = Item::newURI($owner_uid);
+	$uri = Item::newURI();
 	$xterm = XML::escape($term);
 	$post_type = (($item['resource-id']) ? DI::l10n()->t('photo') : DI::l10n()->t('status'));
 	$targettype = (($item['resource-id']) ? Activity\ObjectType::IMAGE : Activity\ObjectType::NOTE );

mod/wall_upload.php

@@ -157,9 +157,9 @@ function wall_upload_post(App $a, $desktopmode = true)
 		" - size: " . $filesize . " - type: " . $filetype);
 
 	$imagedata = @file_get_contents($src);
-	$Image = new Image($imagedata, $filetype);
+	$image = new Image($imagedata, $filetype);
 
-	if (!$Image->isValid()) {
+	if (!$image->isValid()) {
 		$msg = DI::l10n()->t('Unable to process image.');
 		@unlink($src);
 		if ($r_json) {
@@ -170,18 +170,18 @@ function wall_upload_post(App $a, $desktopmode = true)
 		System::exit();
 	}
 
-	$Image->orient($src);
+	$image->orient($src);
 	@unlink($src);
 
 	$max_length = DI::config()->get('system', 'max_image_length');
 	if ($max_length > 0) {
-		$Image->scaleDown($max_length);
+		$image->scaleDown($max_length);
-		$filesize = strlen($Image->asString());
+		$filesize = strlen($image->asString());
 		Logger::info("File upload: Scaling picture to new size " . $max_length);
 	}
 
-	$width = $Image->getWidth();
+	$width = $image->getWidth();
-	$height = $Image->getHeight();
+	$height = $image->getHeight();
 
 	$maximagesize = DI::config()->get('system', 'maximagesize');
 
@@ -190,10 +190,10 @@ function wall_upload_post(App $a, $desktopmode = true)
 		foreach ([5120, 2560, 1280, 640] as $pixels) {
 			if (($filesize > $maximagesize) && (max($width, $height) > $pixels)) {
 				Logger::info('Resize', ['size' => $filesize, 'width' => $width, 'height' => $height, 'max' => $maximagesize, 'pixels' => $pixels]);
-				$Image->scaleDown($pixels);
+				$image->scaleDown($pixels);
-				$filesize = strlen($Image->asString());
+				$filesize = strlen($image->asString());
-				$width = $Image->getWidth();
+				$width = $image->getWidth();
-				$height = $Image->getHeight();
+				$height = $image->getHeight();
 			}
 		}
 		if ($filesize > $maximagesize) {
@@ -220,7 +220,7 @@ function wall_upload_post(App $a, $desktopmode = true)
 
 	$defperm = '<' . $default_cid . '>';
 
-	$r = Photo::store($Image, $page_owner_uid, $visitor, $resource_id, $filename, $album, 0, Photo::DEFAULT, $defperm);
+	$r = Photo::store($image, $page_owner_uid, $visitor, $resource_id, $filename, $album, 0, Photo::DEFAULT, $defperm);
 
 	if (!$r) {
 		$msg = DI::l10n()->t('Image upload failed.');
@@ -233,16 +233,16 @@ function wall_upload_post(App $a, $desktopmode = true)
 	}
 
 	if ($width > 640 || $height > 640) {
-		$Image->scaleDown(640);
+		$image->scaleDown(640);
-		$r = Photo::store($Image, $page_owner_uid, $visitor, $resource_id, $filename, $album, 1, Photo::DEFAULT, $defperm);
+		$r = Photo::store($image, $page_owner_uid, $visitor, $resource_id, $filename, $album, 1, Photo::DEFAULT, $defperm);
 		if ($r) {
 			$smallest = 1;
 		}
 	}
 
 	if ($width > 320 || $height > 320) {
-		$Image->scaleDown(320);
+		$image->scaleDown(320);
-		$r = Photo::store($Image, $page_owner_uid, $visitor, $resource_id, $filename, $album, 2, Photo::DEFAULT, $defperm);
+		$r = Photo::store($image, $page_owner_uid, $visitor, $resource_id, $filename, $album, 2, Photo::DEFAULT, $defperm);
 		if ($r && ($smallest == 0)) {
 			$smallest = 2;
 		}
@@ -264,8 +264,8 @@ function wall_upload_post(App $a, $desktopmode = true)
 		$picture["height"]    = $photo["height"];
 		$picture["type"]      = $photo["type"];
 		$picture["albumpage"] = DI::baseUrl() . '/photos/' . $page_owner_nick . '/image/' . $resource_id;
-		$picture["picture"]   = DI::baseUrl() . "/photo/{$resource_id}-0." . $Image->getExt();
+		$picture["picture"]   = DI::baseUrl() . "/photo/{$resource_id}-0." . $image->getExt();
-		$picture["preview"]   = DI::baseUrl() . "/photo/{$resource_id}-{$smallest}." . $Image->getExt();
+		$picture["preview"]   = DI::baseUrl() . "/photo/{$resource_id}-{$smallest}." . $image->getExt();
 
 		if ($r_json) {
 			System::jsonExit(['picture' => $picture]);
@@ -280,7 +280,7 @@ function wall_upload_post(App $a, $desktopmode = true)
 		System::jsonExit(['ok' => true]);
 	}
 
-	echo  "\n\n" . '[url=' . DI::baseUrl() . '/photos/' . $page_owner_nick . '/image/' . $resource_id . '][img]' . DI::baseUrl() . "/photo/{$resource_id}-{$smallest}.".$Image->getExt()."[/img][/url]\n\n";
+	echo  "\n\n" . '[url=' . DI::baseUrl() . '/photos/' . $page_owner_nick . '/image/' . $resource_id . '][img]' . DI::baseUrl() . "/photo/{$resource_id}-{$smallest}." . $image->getExt() . "[/img][/url]\n\n";
 	System::exit();
 	// NOTREACHED
 }

src/App.php

@@ -145,7 +145,7 @@ class App
 		$this->nickname = $nickname;
 	}
 
-	public function isLoggedIn()
+	public function isLoggedIn(): bool
 	{
 		return local_user() && $this->user_id && ($this->user_id == local_user());
 	}
@@ -155,7 +155,7 @@ class App
 	 *
 	 * @return bool true if user is an admin
 	 */
-	public function isSiteAdmin()
+	public function isSiteAdmin(): bool
 	{
 		$admin_email = $this->config->get('config', 'admin_email');
 
@@ -166,18 +166,18 @@ class App
 
 	/**
 	 * Fetch the user id
-	 * @return int 
+	 * @return int User id
 	 */
-	public function getLoggedInUserId()
+	public function getLoggedInUserId(): int
 	{
 		return $this->user_id;
 	}
 
 	/**
 	 * Fetch the user nick name
-	 * @return string
+	 * @return string User's nickname
 	 */
-	public function getLoggedInUserNickname()
+	public function getLoggedInUserNickname(): string
 	{
 		return $this->nickname;
 	}
@@ -260,9 +260,9 @@ class App
 	/**
 	 * Fetch workerqueue information
 	 *
-	 * @return array 
+	 * @return array Worker queue
 	 */
-	public function getQueue()
+	public function getQueue(): array
 	{
 		return $this->queue ?? [];
 	}
@@ -270,8 +270,8 @@ class App
 	/**
 	 * Fetch a specific workerqueue field
 	 *
-	 * @param string $index 
+	 * @param string $index Work queue record to fetch
-	 * @return mixed 
+	 * @return mixed Work queue item or NULL if not found
 	 */
 	public function getQueueValue(string $index)
 	{
@@ -306,9 +306,9 @@ class App
 	/**
 	 * The basepath of this app
 	 *
-	 * @return string
+	 * @return string Base path from configuration
 	 */
-	public function getBasePath()
+	public function getBasePath(): string
 	{
 		// Don't use the basepath of the config table for basepath (it should always be the config-file one)
 		return $this->config->getCache()->get('system', 'basepath');
@@ -396,10 +396,10 @@ class App
 	/**
 	 * Returns the current theme name. May be overriden by the mobile theme name.
 	 *
-	 * @return string
+	 * @return string Current theme name or empty string in installation phase
 	 * @throws Exception
 	 */
-	public function getCurrentTheme()
+	public function getCurrentTheme(): string
 	{
 		if ($this->mode->isInstall()) {
 			return '';
@@ -425,10 +425,10 @@ class App
 	/**
 	 * Returns the current mobile theme name.
 	 *
-	 * @return string
+	 * @return string Mobile theme name or empty string if installer
 	 * @throws Exception
 	 */
-	public function getCurrentMobileTheme()
+	public function getCurrentMobileTheme(): string
 	{
 		if ($this->mode->isInstall()) {
 			return '';
@@ -441,12 +441,22 @@ class App
 		return $this->currentMobileTheme;
 	}
 
-	public function setCurrentTheme($theme)
+	/**
+	 * Setter for current theme name
+	 *
+	 * @param string $theme Name of current theme
+	 */
+	public function setCurrentTheme(string $theme)
 	{
 		$this->currentTheme = $theme;
 	}
 
-	public function setCurrentMobileTheme($theme)
+	/**
+	 * Setter for current mobile theme name
+	 *
+	 * @param string $theme Name of current mobile theme
+	 */
+	public function setCurrentMobileTheme(string $theme)
 	{
 		$this->currentMobileTheme = $theme;
 	}
@@ -525,10 +535,10 @@ class App
 	/**
 	 * Provide a sane default if nothing is chosen or the specified theme does not exist.
 	 *
-	 * @return string
+	 * @return string Current theme's stylsheet path
 	 * @throws Exception
 	 */
-	public function getCurrentThemeStylesheetPath()
+	public function getCurrentThemeStylesheetPath(): string
 	{
 		return Core\Theme::getStylesheetPath($this->getCurrentTheme());
 	}
@@ -604,9 +614,9 @@ class App
 			if (!empty($_GET['zrl']) && $this->mode->isNormal() && !$this->mode->isBackend() && !local_user()) {
 				// Only continue when the given profile link seems valid
 				// Valid profile links contain a path with "/profile/" and no query parameters
-				if ((parse_url($_GET['zrl'], PHP_URL_QUERY) == "") &&
+				if ((parse_url($_GET['zrl'], PHP_URL_QUERY) == '') &&
-					strstr(parse_url($_GET['zrl'], PHP_URL_PATH), "/profile/")) {
+					strstr(parse_url($_GET['zrl'], PHP_URL_PATH), '/profile/')) {
-					if (Core\Session::get('visitor_home') != $_GET["zrl"]) {
+					if (Core\Session::get('visitor_home') != $_GET['zrl']) {
 						Core\Session::set('my_url', $_GET['zrl']);
 						Core\Session::set('authenticated', 0);
 
@@ -695,7 +705,8 @@ class App
 			// Initialize module that can set the current theme in the init() method, either directly or via App->setProfileOwner
 			$page['page_title'] = $moduleName;
 
-			if (!$this->mode->isInstall() && !$this->mode->has(App\Mode::MAINTENANCEDISABLED)) {
+			// The "view" module is required to show the theme CSS
+			if (!$this->mode->isInstall() && !$this->mode->has(App\Mode::MAINTENANCEDISABLED) && $moduleName !== 'view') {
 				$module = $router->getModule(Maintenance::class);
 			} else {
 				// determine the module class and save it to the module instance
@@ -730,7 +741,7 @@ class App
 	 *
 	 * @throws HTTPException\InternalServerErrorException
 	 */
-	public function redirect($toUrl)
+	public function redirect(string $toUrl)
 	{
 		if (!empty(parse_url($toUrl, PHP_URL_SCHEME))) {
 			Core\System::externalRedirect($toUrl);

src/App/Arguments.php

@@ -78,7 +78,7 @@ class Arguments
 	/**
 	 * @return string The whole command of this call
 	 */
-	public function getCommand()
+	public function getCommand(): string
 	{
 		return $this->command;
 	}
@@ -94,7 +94,7 @@ class Arguments
 	/**
 	 * @return array All arguments of this call
 	 */
-	public function getArgv()
+	public function getArgv(): array
 	{
 		return $this->argv;
 	}
@@ -102,7 +102,7 @@ class Arguments
 	/**
 	 * @return string The used HTTP method
 	 */
-	public function getMethod()
+	public function getMethod(): string
 	{
 		return $this->method;
 	}
@@ -110,7 +110,7 @@ class Arguments
 	/**
 	 * @return int The count of arguments of this call
 	 */
-	public function getArgc()
+	public function getArgc(): int
 	{
 		return $this->argc;
 	}
@@ -145,7 +145,7 @@ class Arguments
 	 *
 	 * @return bool if the argument position exists
 	 */
-	public function has(int $position)
+	public function has(int $position): bool
 	{
 		return array_key_exists($position, $this->argv);
 	}
@@ -158,7 +158,7 @@ class Arguments
 	 *
 	 * @return Arguments The determined arguments
 	 */
-	public function determine(array $server, array $get)
+	public function determine(array $server, array $get): Arguments
 	{
 		// removing leading / - maybe a nginx problem
 		$server['QUERY_STRING'] = ltrim($server['QUERY_STRING'] ?? '', '/');

src/App/BaseURL.php

@@ -107,7 +107,7 @@ class BaseURL
 	 *
 	 * @return string
 	 */
-	public function getHostname()
+	public function getHostname(): string
 	{
 		return $this->hostname;
 	}
@@ -117,7 +117,7 @@ class BaseURL
 	 *
 	 * @return string
 	 */
-	public function getScheme()
+	public function getScheme(): string
 	{
 		return $this->scheme;
 	}
@@ -127,7 +127,7 @@ class BaseURL
 	 *
 	 * @return int
 	 */
-	public function getSSLPolicy()
+	public function getSSLPolicy(): int
 	{
 		return $this->sslPolicy;
 	}
@@ -137,7 +137,7 @@ class BaseURL
 	 *
 	 * @return string
 	 */
-	public function getUrlPath()
+	public function getUrlPath(): string
 	{
 		return $this->urlPath;
 	}
@@ -151,7 +151,7 @@ class BaseURL
 	 *
 	 * @return string
 	 */
-	public function get($ssl = false)
+	public function get(bool $ssl = false): string
 	{
 		if ($this->sslPolicy === self::SSL_POLICY_SELFSIGN && $ssl) {
 			return Network::switchScheme($this->url);
@@ -168,8 +168,9 @@ class BaseURL
 	 * @param string? $urlPath
 	 *
 	 * @return bool true, if successful
+	 * @TODO Find proper types
 	 */
-	public function save($hostname = null, $sslPolicy = null, $urlPath = null)
+	public function save($hostname = null, $sslPolicy = null, $urlPath = null): bool
 	{
 		$currHostname  = $this->hostname;
 		$currSSLPolicy = $this->sslPolicy;
@@ -224,11 +225,11 @@ class BaseURL
 	/**
 	 * Save the current url as base URL
 	 *
-	 * @param $url
+	 * @param string $url
 	 *
 	 * @return bool true, if the save was successful
 	 */
-	public function saveByURL($url)
+	public function saveByURL(string $url): bool
 	{
 		$parsed = @parse_url($url);
 
@@ -421,7 +422,7 @@ class BaseURL
 	 *
 	 * @return string The cleaned url
 	 */
-	public function remove(string $origURL)
+	public function remove(string $origURL): string
 	{
 		// Remove the hostname from the url if it is an internal link
 		$nurl = Strings::normaliseLink($origURL);
@@ -443,9 +444,13 @@ class BaseURL
 	 * @param string $toUrl The destination URL (Default is empty, which is the default page of the Friendica node)
 	 * @param bool   $ssl   if true, base URL will try to get called with https:// (works just for relative paths)
 	 *
+	 * @throws HTTPException\FoundException
+	 * @throws HTTPException\MovedPermanentlyException
+	 * @throws HTTPException\TemporaryRedirectException
+	 *
 	 * @throws HTTPException\InternalServerErrorException In Case the given URL is not relative to the Friendica node
 	 */
-	public function redirect($toUrl = '', $ssl = false)
+	public function redirect(string $toUrl = '', bool $ssl = false)
 	{
 		if (!empty(parse_url($toUrl, PHP_URL_SCHEME))) {
 			throw new HTTPException\InternalServerErrorException("'$toUrl is not a relative path, please use System::externalRedirectTo");
@@ -458,8 +463,8 @@ class BaseURL
 	/**
 	 * Returns the base url as string
 	 */
-	public function __toString()
+	public function __toString(): string
 	{
-		return $this->get();
+		return (string) $this->get();
 	}
 }

src/App/Mode.php

@@ -130,7 +130,7 @@ class Mode
 	 *
 	 * @throws \Exception
 	 */
-	public function determine(BasePath $basepath, Database $database, Cache $configCache)
+	public function determine(BasePath $basepath, Database $database, Cache $configCache): Mode
 	{
 		$mode = 0;
 
@@ -178,7 +178,7 @@ class Mode
 	 *
 	 * @return Mode returns the determined mode
 	 */
-	public function determineRunMode(bool $isBackend, array $server, Arguments $args, MobileDetect $mobileDetect)
+	public function determineRunMode(bool $isBackend, array $server, Arguments $args, MobileDetect $mobileDetect): Mode
 	{
 		foreach (self::BACKEND_CONTENT_TYPES as $type) {
 			if (strpos(strtolower($server['HTTP_ACCEPT'] ?? ''), $type) !== false) {
@@ -201,7 +201,7 @@ class Mode
 	 *
 	 * @return bool returns true, if the mode is set
 	 */
-	public function has($mode)
+	public function has(int $mode): bool
 	{
 		return ($this->mode & $mode) > 0;
 	}
@@ -227,7 +227,7 @@ class Mode
 	 *
 	 * @return int Execution Mode
 	 */
-	public function getExecutor()
+	public function getExecutor(): int
 	{
 		return $this->executor;
 	}
@@ -235,9 +235,9 @@ class Mode
 	/**
 	 * Install mode is when the local config file is missing or the DB schema hasn't been installed yet.
 	 *
-	 * @return bool
+	 * @return bool Whether installation mode is active (local/database configuration files present or not)
 	 */
-	public function isInstall()
+	public function isInstall(): bool
 	{
 		return !$this->has(Mode::LOCALCONFIGPRESENT) ||
 		       !$this->has(MODE::DBCONFIGAVAILABLE);
@@ -248,7 +248,7 @@ class Mode
 	 *
 	 * @return bool
 	 */
-	public function isNormal()
+	public function isNormal(): bool
 	{
 		return $this->has(Mode::LOCALCONFIGPRESENT) &&
 		       $this->has(Mode::DBAVAILABLE) &&
@@ -261,7 +261,7 @@ class Mode
 	 *
 	 * @return bool Is it a backend call
 	 */
-	public function isBackend()
+	public function isBackend(): bool
 	{
 		return $this->isBackend;
 	}
@@ -271,7 +271,7 @@ class Mode
 	 *
 	 * @return bool true if it was an AJAX request
 	 */
-	public function isAjax()
+	public function isAjax(): bool
 	{
 		return $this->isAjax;
 	}
@@ -281,7 +281,7 @@ class Mode
 	 *
 	 * @return bool true if it was an mobile request
 	 */
-	public function isMobile()
+	public function isMobile(): bool
 	{
 		return $this->isMobile;
 	}
@@ -291,7 +291,7 @@ class Mode
 	 *
 	 * @return bool true if it was an tablet request
 	 */
-	public function isTablet()
+	public function isTablet(): bool
 	{
 		return $this->isTablet;
 	}

src/App/Page.php

@@ -195,7 +195,7 @@ class Page implements ArrayAccess
 	 * @param string $media
 	 * @see Page::initHead()
 	 */
-	public function registerStylesheet($path, string $media = 'screen')
+	public function registerStylesheet(string $path, string $media = 'screen')
 	{
 		$path = Network::appendQueryParam($path, ['v' => FRIENDICA_VERSION]);
 
@@ -288,7 +288,7 @@ class Page implements ArrayAccess
 	 *
 	 * Taken from http://webcheatsheet.com/php/get_current_page_url.php
 	 */
-	private function curPageURL()
+	private function curPageURL(): string
 	{
 		$pageURL = 'http';
 		if (!empty($_SERVER["HTTPS"]) && ($_SERVER["HTTPS"] == "on")) {

src/App/Request.php

@@ -0,0 +1,152 @@
+<?php
+/**
+ * @copyright Copyright (C) 2010-2022, the Friendica project
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace Friendica\App;
+
+use Friendica\Core\Config\Capability\IManageConfigValues;
+
+/**
+ * Container for the whole request
+ *
+ * @see https://www.php-fig.org/psr/psr-7/#321-psrhttpmessageserverrequestinterface
+ *
+ * @todo future container class for whole requests, currently it's not :-)
+ */
+class Request
+{
+	/**
+	 * A comma separated list of default headers that could contain the client IP in a proxy request
+	 *
+	 * @var string
+	 */
+	const DEFAULT_FORWARD_FOR_HEADER = 'HTTP_X_FORWARDED_FOR';
+
+	/** @var string The remote IP address of the current request */
+	protected $remoteAddress;
+
+	/**
+	 * @return string The remote IP address of the current request
+	 *
+	 * Do always use this instead of $_SERVER['REMOTE_ADDR']
+	 */
+	public function getRemoteAddress(): string
+	{
+		return $this->remoteAddress;
+	}
+
+	public function __construct(IManageConfigValues $config, array $server = [])
+	{
+		$this->remoteAddress = $this->determineRemoteAddress($config, $server);
+	}
+
+	/**
+	 * Checks if given $remoteAddress matches given $trustedProxy.
+	 * If $trustedProxy is an IPv4 IP range given in CIDR notation, true will be returned if
+	 * $remoteAddress is an IPv4 address within that IP range.
+	 * Otherwise, $remoteAddress will be compared to $trustedProxy literally and the result
+	 * will be returned.
+	 *
+	 * @param string $trustedProxy  The current, trusted proxy to check
+	 * @param string $remoteAddress The current remote IP address
+	 *
+	 *
+	 * @return boolean true if $remoteAddress matches $trustedProxy, false otherwise
+	 */
+	protected function matchesTrustedProxy(string $trustedProxy, string $remoteAddress): bool
+	{
+		$cidrre = '/^([0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3})\/([0-9]{1,2})$/';
+
+		if (preg_match($cidrre, $trustedProxy, $match)) {
+			$net       = $match[1];
+			$shiftbits = min(32, max(0, 32 - intval($match[2])));
+			$netnum    = ip2long($net) >> $shiftbits;
+			$ipnum     = ip2long($remoteAddress) >> $shiftbits;
+
+			return $ipnum === $netnum;
+		}
+
+		return $trustedProxy === $remoteAddress;
+	}
+
+	/**
+	 * Checks if given $remoteAddress matches any entry in the given array $trustedProxies.
+	 * For details regarding what "match" means, refer to `matchesTrustedProxy`.
+	 *
+	 * @param string[] $trustedProxies A list of the trusted proxies
+	 * @param string   $remoteAddress  The current remote IP address
+	 *
+	 * @return boolean true if $remoteAddress matches any entry in $trustedProxies, false otherwise
+	 */
+	protected function isTrustedProxy(array $trustedProxies, string $remoteAddress): bool
+	{
+		foreach ($trustedProxies as $tp) {
+			if ($this->matchesTrustedProxy($tp, $remoteAddress)) {
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	/**
+	 * Determines the remote address, if the connection came from a trusted proxy
+	 * and `forwarded_for_headers` has been configured then the IP address
+	 * specified in this header will be returned instead.
+	 *
+	 * @param IManageConfigValues $config
+	 * @param array               $server The $_SERVER array
+	 *
+	 * @return string
+	 */
+	protected function determineRemoteAddress(IManageConfigValues $config, array $server): string
+	{
+		$remoteAddress  = $server['REMOTE_ADDR'] ?? '0.0.0.0';
+		$trustedProxies = preg_split('/(\s*,*\s*)*,+(\s*,*\s*)*/', $config->get('proxy', 'trusted_proxies', ''));
+
+		if (\is_array($trustedProxies) && $this->isTrustedProxy($trustedProxies, $remoteAddress)) {
+			$forwardedForHeaders = preg_split('/(\s*,*\s*)*,+(\s*,*\s*)*/', $config->get('proxy', 'forwarded_for_headers', static::DEFAULT_FORWARD_FOR_HEADER));
+
+			foreach ($forwardedForHeaders as $header) {
+				if (isset($server[$header])) {
+					foreach (explode(',', $server[$header]) as $IP) {
+						$IP = trim($IP);
+
+						// remove brackets from IPv6 addresses
+						if (strpos($IP, '[') === 0 && substr($IP, -1) === ']') {
+							$IP = substr($IP, 1, -1);
+						}
+
+						// skip trusted proxies in the list itself
+						if ($this->isTrustedProxy($trustedProxies, $IP)) {
+							continue;
+						}
+
+						if (filter_var($IP, FILTER_VALIDATE_IP) !== false) {
+							return $IP;
+						}
+					}
+				}
+			}
+		}
+
+		return $remoteAddress;
+	}
+}

src/App/Router.php

@@ -152,7 +152,7 @@ class Router
 	 *
 	 * @throws HTTPException\InternalServerErrorException In case of invalid configs
 	 */
-	public function loadRoutes(array $routes)
+	public function loadRoutes(array $routes): Router
 	{
 		$routeCollector = ($this->routeCollector ?? new RouteCollector(new Std(), new GroupCountBased()));
 
@@ -166,6 +166,13 @@ class Router
 		return $this;
 	}
 
+	/**
+	 * Adds multiple routes to a route collector
+	 *
+	 * @param RouteCollector $routeCollector Route collector instance
+	 * @param array $routes Multiple routes to be added
+	 * @throws HTTPException\InternalServerErrorException If route was wrong (somehow)
+	 */
 	private function addRoutes(RouteCollector $routeCollector, array $routes)
 	{
 		foreach ($routes as $route => $config) {
@@ -221,7 +228,7 @@ class Router
 	 *
 	 * @return bool
 	 */
-	private function isRoute(array $config)
+	private function isRoute(array $config): bool
 	{
 		return
 			// The config array should at least have one entry
@@ -253,7 +260,7 @@ class Router
 	 * @throws HTTPException\MethodNotAllowedException    If a rule matched but the method didn't
 	 * @throws HTTPException\NotFoundException            If no rule matched
 	 */
-	private function getModuleClass()
+	private function getModuleClass(): string
 	{
 		$cmd = $this->args->getCommand();
 		$cmd = '/' . ltrim($cmd, '/');

src/BaseCollection.php

@@ -70,9 +70,11 @@ class BaseCollection extends \ArrayIterator
 	}
 
 	/**
-	 * @return int
+	 * Getter for total count
+	 *
+	 * @return int Total count
 	 */
-	public function getTotalCount()
+	public function getTotalCount(): int
 	{
 		return $this->totalCount;
 	}
@@ -85,7 +87,7 @@ class BaseCollection extends \ArrayIterator
 	 * @return array
 	 * @see array_column()
 	 */
-	public function column($column, $index_key = null)
+	public function column(string $column, $index_key = null): array
 	{
 		return array_column($this->getArrayCopy(true), $column, $index_key);
 	}
@@ -97,7 +99,7 @@ class BaseCollection extends \ArrayIterator
 	 * @return BaseCollection
 	 * @see array_map()
 	 */
-	public function map(callable $callback)
+	public function map(callable $callback): BaseCollection
 	{
 		return new static(array_map($callback, $this->getArrayCopy()), $this->getTotalCount());
 	}
@@ -110,7 +112,7 @@ class BaseCollection extends \ArrayIterator
 	 * @return BaseCollection
 	 * @see array_filter()
 	 */
-	public function filter(callable $callback = null, int $flag = 0)
+	public function filter(callable $callback = null, int $flag = 0): BaseCollection
 	{
 		return new static(array_filter($this->getArrayCopy(), $callback, $flag));
 	}

src/BaseEntity.php

@@ -55,14 +55,14 @@ abstract class BaseEntity extends BaseDataTransferObject
 	}
 
 	/**
-	 * @param $name
+	 * @param mixed $name
 	 * @return bool
 	 * @throws HTTPException\InternalServerErrorException
 	 */
-	public function __isset($name)
+	public function __isset($name): bool
 	{
 		if (!property_exists($this, $name)) {
-			throw new HTTPException\InternalServerErrorException('Unknown property ' . $name . ' in Entity ' . static::class);
+			throw new HTTPException\InternalServerErrorException('Unknown property ' . $name . ' of type ' . gettype($name) . ' in Entity ' . static::class);
 		}
 
 		return !empty($this->$name);

src/BaseModel.php

@@ -110,11 +110,11 @@ abstract class BaseModel extends BaseDataTransferObject
 	 * - $model->field (outside of class)
 	 * - $this->field (inside of class)
 	 *
-	 * @param $name
+	 * @param string $name Name of data to fetch
 	 * @return mixed
 	 * @throws HTTPException\InternalServerErrorException
 	 */
-	public function __get($name)
+	public function __get(string $name)
 	{
 		$this->checkValid();
 

src/BaseModule.php

@@ -102,6 +102,7 @@ abstract class BaseModule implements ICanHandleRequests
 	 * e.g. from protocol implementations.
 	 *
 	 * @param string[] $request The $_REQUEST content
+	 * @return void
 	 */
 	protected function rawContent(array $request = [])
 	{
@@ -117,6 +118,7 @@ abstract class BaseModule implements ICanHandleRequests
 	 * XML feed or a JSON output.
 	 *
 	 * @param string[] $request The $_REQUEST content
+	 * @return string
 	 */
 	protected function content(array $request = []): string
 	{
@@ -130,6 +132,7 @@ abstract class BaseModule implements ICanHandleRequests
 	 * Doesn't display any content
 	 *
 	 * @param string[] $request The $_REQUEST content
+	 * @return void
 	 */
 	protected function delete(array $request = [])
 	{
@@ -142,6 +145,7 @@ abstract class BaseModule implements ICanHandleRequests
 	 * Doesn't display any content
 	 *
 	 * @param string[] $request The $_REQUEST content
+	 * @return void
 	 */
 	protected function patch(array $request = [])
 	{
@@ -154,7 +158,7 @@ abstract class BaseModule implements ICanHandleRequests
 	 * Doesn't display any content
 	 *
 	 * @param string[] $request The $_REQUEST content
-	 *
+	 * @return void
 	 */
 	protected function post(array $request = [])
 	{
@@ -168,6 +172,7 @@ abstract class BaseModule implements ICanHandleRequests
 	 * Doesn't display any content
 	 *
 	 * @param string[] $request The $_REQUEST content
+	 * @return void
 	 */
 	protected function put(array $request = [])
 	{
@@ -279,12 +284,12 @@ abstract class BaseModule implements ICanHandleRequests
 	/**
 	 * Fetch a request value and apply default values and check against minimal and maximal values
 	 *
-	 * @param array $input 
+	 * @param array $input Input fields
-	 * @param string $parameter 
+	 * @param string $parameter Parameter
-	 * @param mixed $default 
+	 * @param mixed $default Default
-	 * @param mixed $minimal_value 
+	 * @param mixed $minimal_value Minimal value
-	 * @param mixed $maximum_value 
+	 * @param mixed $maximum_value Maximum value
-	 * @return mixed 
+	 * @return mixed null on error anything else on success (?)
 	 */
 	public function getRequestValue(array $input, string $parameter, $default = null, $minimal_value = null, $maximum_value = null)
 	{
@@ -320,7 +325,7 @@ abstract class BaseModule implements ICanHandleRequests
 		return $value;
 	}
 
-	/*
+	/**
 	 * Functions used to protect against Cross-Site Request Forgery
 	 * The security token has to base on at least one value that an attacker can't know - here it's the session ID and the private key.
 	 * In this implementation, a security token is reusable (if the user submits a form, goes back and resubmits the form, maybe with small changes;
@@ -330,8 +335,11 @@ abstract class BaseModule implements ICanHandleRequests
 	 *    If the new page contains by any chance external elements, then the used security token is exposed by the referrer.
 	 *    Actually, important actions should not be triggered by Links / GET-Requests at all, but sometimes they still are,
 	 *    so this mechanism brings in some damage control (the attacker would be able to forge a request to a form of this type, but not to forms of other types).
+	 *
+	 * @param string $typename Type name
+	 * @return string Security hash with timestamp
 	 */
-	public static function getFormSecurityToken($typename = '')
+	public static function getFormSecurityToken(string $typename = ''): string
 	{
 		$user      = User::getById(DI::app()->getLoggedInUserId(), ['guid', 'prvkey']);
 		$timestamp = time();
@@ -340,7 +348,14 @@ abstract class BaseModule implements ICanHandleRequests
 		return $timestamp . '.' . $sec_hash;
 	}
 
-	public static function checkFormSecurityToken($typename = '', $formname = 'form_security_token')
+	/**
+	 * Checks if form's security (CSRF) token is valid.
+	 *
+	 * @param string $typename ???
+	 * @param string $formname Name of form/field (???)
+	 * @return bool Whether it is valid
+	 */
+	public static function checkFormSecurityToken(string $typename = '', string $formname = 'form_security_token'): bool
 	{
 		$hash = null;
 
@@ -372,12 +387,12 @@ abstract class BaseModule implements ICanHandleRequests
 		return ($sec_hash == $x[1]);
 	}
 
-	public static function getFormSecurityStandardErrorMessage()
+	public static function getFormSecurityStandardErrorMessage(): string
 	{
 		return DI::l10n()->t("The form security token was not correct. This probably happened because the form has been opened for too long \x28>3 hours\x29 before submitting it.") . EOL;
 	}
 
-	public static function checkFormSecurityTokenRedirectOnError($err_redirect, $typename = '', $formname = 'form_security_token')
+	public static function checkFormSecurityTokenRedirectOnError(string $err_redirect, string $typename = '', string $formname = 'form_security_token')
 	{
 		if (!self::checkFormSecurityToken($typename, $formname)) {
 			Logger::notice('checkFormSecurityToken failed: user ' . DI::app()->getLoggedInUserNickname() . ' - form element ' . $typename);
@@ -387,7 +402,7 @@ abstract class BaseModule implements ICanHandleRequests
 		}
 	}
 
-	public static function checkFormSecurityTokenForbiddenOnError($typename = '', $formname = 'form_security_token')
+	public static function checkFormSecurityTokenForbiddenOnError(string $typename = '', string $formname = 'form_security_token')
 	{
 		if (!self::checkFormSecurityToken($typename, $formname)) {
 			Logger::notice('checkFormSecurityToken failed: user ' . DI::app()->getLoggedInUserNickname() . ' - form element ' . $typename);
@@ -397,7 +412,7 @@ abstract class BaseModule implements ICanHandleRequests
 		}
 	}
 
-	protected static function getContactFilterTabs(string $baseUrl, string $current, bool $displayCommonTab)
+	protected static function getContactFilterTabs(string $baseUrl, string $current, bool $displayCommonTab): array
 	{
 		$tabs = [
 			[

src/Console/Addon.php

@@ -82,7 +82,7 @@ HELP;
 		AddonCore::loadAddons();
 	}
 
-	protected function doExecute()
+	protected function doExecute(): int
 	{
 		if ($this->getOption('v')) {
 			$this->out('Class: ' . __CLASS__);
@@ -116,8 +116,7 @@ HELP;
 	/**
 	 * Lists plugins
 	 *
-	 * @return int Return code of this command
+	 * @return int|bool Return code of this command, false on error (?)
-	 *
 	 * @throws \Exception
 	 */
 	private function list()
@@ -165,10 +164,9 @@ HELP;
 	 * Enables an addon
 	 *
 	 * @return int Return code of this command
-	 *
 	 * @throws \Exception
 	 */
-	private function enable()
+	private function enable(): int
 	{
 		$addonname = $this->getArgument(1);
 
@@ -190,10 +188,9 @@ HELP;
 	 * Disables an addon
 	 *
 	 * @return int Return code of this command
-	 *
 	 * @throws \Exception
 	 */
-	private function disable()
+	private function disable(): int
 	{
 		$addonname = $this->getArgument(1);
 

src/Console/ArchiveContact.php

@@ -80,7 +80,7 @@ HELP;
 		$this->l10n = $l10n;
 	}
 
-	protected function doExecute()
+	protected function doExecute(): int
 	{
 		if ($this->getOption('v')) {
 			$this->out('Class: ' . __CLASS__);

src/Console/AutomaticInstallation.php

@@ -110,7 +110,7 @@ HELP;
 		$this->dba         = $dba;
 	}
 
-	protected function doExecute()
+	protected function doExecute(): int
 	{
 		// Initialise the app
 		$this->out("Initializing setup...");
@@ -225,7 +225,7 @@ HELP;
 
 		$installer->resetChecks();
 
-		if (!$installer->installDatabase($basePathConf)) {
+		if (!$installer->installDatabase()) {
 			$errorMessage = $this->extractErrors($installer->getChecks());
 			throw new RuntimeException($errorMessage);
 		}

src/Console/Cache.php

@@ -90,7 +90,7 @@ HELP;
 		$this->cache   = $cache;
 	}
 
-	protected function doExecute()
+	protected function doExecute(): int
 	{
 		if ($this->getOption('v')) {
 			$this->out('Executable: ' . $this->executable);

src/Console/Config.php

@@ -102,7 +102,7 @@ HELP;
 		$this->config = $config;
 	}
 
-	protected function doExecute()
+	protected function doExecute(): int
 	{
 		if ($this->getOption('v')) {
 			$this->out('Executable: ' . $this->executable);

src/Console/Contact.php

@@ -76,7 +76,7 @@ HELP;
 		$this->appMode = $appMode;
 	}
 
-	protected function doExecute()
+	protected function doExecute(): int
 	{
 		if ($this->getOption('v')) {
 			$this->out('Class: ' . __CLASS__);

src/Console/CreateDoxygen.php

@@ -45,7 +45,7 @@ HELP;
 		return $help;
 	}
 
-	protected function doExecute()
+	protected function doExecute(): int
 	{
 		if ($this->getOption('v')) {
 			$this->out('Class: ' . __CLASS__);

src/Console/DatabaseStructure.php

@@ -25,6 +25,12 @@ use Friendica\Core\Config\ValueObject\Cache;
 use Friendica\Core\Update;
 use Friendica\Database\Database;
 use Friendica\Database\DBStructure;
+use Friendica\Database\Definition\DbaDefinition;
+use Friendica\Database\Definition\ViewDefinition;
+use Friendica\Util\BasePath;
+use Friendica\Util\Writer\DbaDefinitionSqlWriter;
+use Friendica\Util\Writer\DocWriter;
+use Friendica\Util\Writer\ViewDefinitionSqlWriter;
 use RuntimeException;
 
 /**
@@ -34,15 +40,21 @@ class DatabaseStructure extends \Asika\SimpleConsole\Console
 {
 	protected $helpOptions = ['h', 'help', '?'];
 
-	/**
+	/** @var Database */
-	 * @var Database
-	 */
 	private $dba;
-	/**
+
-	 * @var Cache
+	/** @var Cache */
-	 */
 	private $configCache;
 
+	/** @var DbaDefinition */
+	private $dbaDefinition;
+
+	/** @var ViewDefinition */
+	private $viewDefinition;
+
+	/** @var string */
+	private $basePath;
+
 	protected function getHelp()
 	{
 		$help = <<<HELP
@@ -71,15 +83,18 @@ HELP;
 		return $help;
 	}
 
-	public function __construct(Database $dba, Cache $configCache, $argv = null)
+	public function __construct(Database $dba, DbaDefinition $dbaDefinition, ViewDefinition $viewDefinition, BasePath $basePath, Cache $configCache, $argv = null)
 	{
 		parent::__construct($argv);
 
 		$this->dba = $dba;
+		$this->dbaDefinition = $dbaDefinition;
+		$this->viewDefinition = $viewDefinition;
 		$this->configCache = $configCache;
+		$this->basePath = $basePath->getPath();
 	}
 
-	protected function doExecute()
+	protected function doExecute(): int
 	{
 		if ($this->getOption('v')) {
 			$this->out('Class: ' . __CLASS__);
@@ -120,10 +135,9 @@ HELP;
 				$output = ob_get_clean();
 				break;
 			case "dumpsql":
-				DBStructure::writeStructure();
+				DocWriter::writeDbDefinition($this->dbaDefinition, $this->basePath);
-				ob_start();
+				$output = DbaDefinitionSqlWriter::create($this->dbaDefinition);
-				DBStructure::printStructure($basePath);
+				$output .= ViewDefinitionSqlWriter::create($this->viewDefinition);
-				$output = ob_get_clean();
 				break;
 			case "toinnodb":
 				ob_start();

src/Console/DocBloxErrorChecker.php

@@ -71,7 +71,7 @@ HELP;
 		return $help;
 	}
 
-	protected function doExecute()
+	protected function doExecute(): int
 	{
 		if ($this->getOption('v')) {
 			$this->out('Class: ' . __CLASS__);

src/Console/Extract.php

@@ -49,7 +49,7 @@ HELP;
 		return $help;
 	}
 
-	protected function doExecute()
+	protected function doExecute(): int
 	{
 		if ($this->getOption('v')) {
 			$this->out('Class: ' . __CLASS__);

src/Console/FixAPDeliveryWorkerTaskParameters.php

@@ -85,7 +85,7 @@ HELP;
 		$this->l10n = $l10n;
 	}
 
-	protected function doExecute()
+	protected function doExecute(): int
 	{
 		if ($this->getOption('v')) {
 			$this->out('Class: ' . __CLASS__);

src/Console/GlobalCommunityBlock.php

@@ -70,7 +70,7 @@ HELP;
 		$this->l10n = $l10n;
 	}
 
-	protected function doExecute()
+	protected function doExecute(): int
 	{
 		if ($this->getOption('v')) {
 			$this->out('Class: ' . __CLASS__);

src/Console/GlobalCommunitySilence.php

@@ -75,7 +75,7 @@ HELP;
 		$this->dba  =$dba;
 	}
 
-	protected function doExecute()
+	protected function doExecute(): int
 	{
 		if ($this->getOption('v')) {
 			$this->out('Class: ' . __CLASS__);

src/Console/Lock.php

@@ -84,7 +84,7 @@ HELP;
 		$this->lock    = $lock;
 	}
 
-	protected function doExecute()
+	protected function doExecute(): int
 	{
 		if ($this->getOption('v')) {
 			$this->out('Executable: ' . $this->executable);

src/Console/Maintenance.php

@@ -77,7 +77,7 @@ HELP;
 		$this->config = $config;
 	}
 
-	protected function doExecute()
+	protected function doExecute(): int
 	{
 		if ($this->getOption('v')) {
 			$this->out('Class: ' . __CLASS__);

src/Console/MergeContacts.php

@@ -67,7 +67,7 @@ HELP;
 		$this->l10n = $l10n;
 	}
 
-	protected function doExecute()
+	protected function doExecute(): int
 	{
 		$duplicates = $this->dba->p("SELECT COUNT(*) AS `total`, `uri-id`, MAX(`url`) AS `url` FROM `contact` WHERE `uid` = 0 GROUP BY `uri-id` HAVING total > 1");
 		while ($duplicate = $this->dba->fetch($duplicates)) {

src/Console/MoveToAvatarCache.php

@@ -85,7 +85,7 @@ HELP;
 		$this->config = $config;
 	}
 
-	protected function doExecute()
+	protected function doExecute(): int
 	{
 		if (!$this->config->get('system', 'avatar_cache')) {
 			$this->err($this->l10n->t('The avatar cache needs to be enabled to use this command.'));

src/Console/PhpToPo.php

@@ -63,7 +63,7 @@ HELP;
 		return $help;
 	}
 
-	protected function doExecute()
+	protected function doExecute(): int
 	{
 		if ($this->getOption('v')) {
 			$this->out('Class: ' . __CLASS__);

src/Console/PoToPhp.php

@@ -50,7 +50,7 @@ HELP;
 		return $help;
 	}
 
-	protected function doExecute()
+	protected function doExecute(): int
 	{
 		if ($this->getOption('v')) {
 			$this->out('Class: ' . __CLASS__);

src/Console/PostUpdate.php

@@ -69,7 +69,7 @@ HELP;
 		$this->l10n = $l10n;
 	}
 
-	protected function doExecute()
+	protected function doExecute(): int
 	{
 		$a = \Friendica\DI::app();
 

src/Console/Relay.php

@@ -76,7 +76,7 @@ HELP;
 		$this->dba = $dba;
 	}
 
-	protected function doExecute()
+	protected function doExecute(): int
 	{
 		if ($this->getOption('v')) {
 			$this->out('Executable: ' . $this->executable);

src/Console/Relocate.php

@@ -74,7 +74,7 @@ HELP;
 		$this->config   = $config;
 	}
 
-	protected function doExecute()
+	protected function doExecute(): int
 	{
 		if (count($this->args) == 0) {
 			$this->out($this->getHelp());

src/Console/ServerBlock.php

@@ -79,7 +79,7 @@ HELP;
 		$this->config = $config;
 	}
 
-	protected function doExecute()
+	protected function doExecute(): int
 	{
 		if (count($this->args) == 0) {
 			$this->printBlockedServers($this->config);

src/Console/Storage.php

@@ -69,7 +69,7 @@ HELP;
 		return $help;
 	}
 
-	protected function doExecute()
+	protected function doExecute(): int
 	{
 		if ($this->getOption('v')) {
 			$this->out('Executable: ' . $this->executable);

src/Console/Test.php

@@ -42,7 +42,7 @@ HELP;
 		return $help;
 	}
 
-	protected function doExecute()
+	protected function doExecute(): int
 	{
 		if ($this->getOption('v')) {
 			$this->out('Class: ' . __CLASS__);

src/Console/Typo.php

@@ -60,7 +60,7 @@ HELP;
 		$this->config = $config;
 	}
 
-	protected function doExecute()
+	protected function doExecute(): int
 	{
 		if ($this->getOption('v')) {
 			$this->out('Class: ' . __CLASS__);

src/Console/User.php

@@ -97,7 +97,7 @@ HELP;
 		$this->pConfig = $pConfig;
 	}
 
-	protected function doExecute()
+	protected function doExecute(): int
 	{
 		if ($this->getOption('v')) {
 			$this->out('Class: ' . __CLASS__);

src/Contact/Avatar.php

@@ -123,7 +123,7 @@ class Avatar
 		return $fields;
 	}
 
-	private static function getFilename(string $url)
+	private static function getFilename(string $url): string
 	{
 		$guid = Item::guidFromUri($url, parse_url($url, PHP_URL_HOST));
 

src/Contact/LocalRelationship/Factory/LocalRelationship.php

@@ -52,7 +52,7 @@ class LocalRelationship extends BaseFactory implements ICanCreateFromTableRow
 			$row['hub-verify'] ?? '',
 			$row['protocol'] ?? Protocol::PHANTOM,
 			$row['rating'] ?? null,
-			$row['priority'] ?? null
+			$row['priority'] ?? 0
 		);
 	}
 }

src/Content/BoundariesPager.php

@@ -49,7 +49,7 @@ class BoundariesPager extends Pager
 	 * @param string  $last_item_id  The id† of the last item in the displayed item list
 	 * @param integer $itemsPerPage  An optional number of items per page to override the default value
 	 */
-	public function __construct(L10n $l10n, $queryString, $first_item_id = null, $last_item_id = null, $itemsPerPage = 50)
+	public function __construct(L10n $l10n, string $queryString, string $first_item_id = null, string $last_item_id = null, int $itemsPerPage = 50)
 	{
 		parent::__construct($l10n, $queryString, $itemsPerPage);
 
@@ -73,12 +73,12 @@ class BoundariesPager extends Pager
 		}
 	}
 
-	public function getStart()
+	public function getStart(): int
 	{
 		throw new \BadMethodCallException();
 	}
 
-	public function getPage()
+	public function getPage(): int
 	{
 		throw new \BadMethodCallException();
 	}
@@ -102,7 +102,7 @@ class BoundariesPager extends Pager
 	 * @return string HTML string of the pager
 	 * @throws \Exception
 	 */
-	public function renderMinimal(int $itemCount)
+	public function renderMinimal(int $itemCount): string
 	{
 		$displayedItemCount = max(0, intval($itemCount));
 
@@ -130,7 +130,10 @@ class BoundariesPager extends Pager
 		return Renderer::replaceMacros($tpl, ['pager' => $data]);
 	}
 
-	public function renderFull($itemCount)
+	/**
+	 * Unsupported method, must be type-compatible
+	 */
+	public function renderFull(int $itemCount): string
 	{
 		throw new \BadMethodCallException();
 	}

src/Content/ContactSelector.php

@@ -41,7 +41,7 @@ class ContactSelector
 	 * @param boolean $disabled optional, default false
 	 * @return string
 	 */
-	public static function pollInterval($current, $disabled = false)
+	public static function pollInterval(string $current, bool $disabled = false): string
 	{
 		$dis = (($disabled) ? ' disabled="disabled" ' : '');
 		$o = '';
@@ -84,7 +84,7 @@ class ContactSelector
 	 * @return string Server URL
 	 * @throws \Exception
 	 */
-	private static function getServerURLForProfile($profile)
+	private static function getServerURLForProfile(string $profile): string
 	{
 		if (!empty(self::$server_url[$profile])) {
 			return self::$server_url[$profile];
@@ -111,13 +111,16 @@ class ContactSelector
 	}
 
 	/**
+	 * Determines network name
+	 *
 	 * @param string $network  network of the contact
 	 * @param string $profile  optional, default empty
 	 * @param string $protocol (Optional) Protocol that is used for the transmission
+	 * @param int $gsid Server id
 	 * @return string
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function networkToName($network, $profile = '', $protocol = '', $gsid = 0)
+	public static function networkToName(string $network, string $profile = '', string $protocol = '', int $gsid = null): string
 	{
 		$nets = [
 			Protocol::DFRN      =>   DI::l10n()->t('DFRN'),
@@ -179,12 +182,15 @@ class ContactSelector
 	}
 
 	/**
+	 * Determines network's icon name
+	 *
 	 * @param string $network network
 	 * @param string $profile optional, default empty
-	 * @return string
+	 * @param int $gsid Server id
+	 * @return string Name for network icon
 	 * @throws \Exception
 	 */
-	public static function networkToIcon($network, $profile = "", $gsid = 0)
+	public static function networkToIcon(string $network, string $profile = "", int $gsid = null): string
 	{
 		$nets = [
 			Protocol::DFRN      =>   'friendica',

src/Content/Conversation.php

@@ -154,7 +154,7 @@ class Conversation
 				}
 
 				// Skip when the causer of the parent is the same as the author of the announce
-				if (($verb == Activity::ANNOUNCE) && !empty($thread_parent['causer-id'] && ($thread_parent['causer-id'] == $activity['author-id']))) {
+				if (($verb == Activity::ANNOUNCE) && !empty($thread_parent['causer-id']) && ($thread_parent['causer-id'] == $activity['author-id'])) {
 					continue;
 				}
 
@@ -189,7 +189,7 @@ class Conversation
 	 * @return string formatted text
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public function formatActivity(array $links, $verb, $id)
+	public function formatActivity(array $links, string $verb, int $id): string
 	{
 		$this->profiler->startRecording('rendering');
 		$o        = '';
@@ -275,7 +275,7 @@ class Conversation
 		return $o;
 	}
 
-	public function statusEditor(array $x = [], $notes_cid = 0, $popup = false)
+	public function statusEditor(array $x = [], int $notes_cid = 0, bool $popup = false): string
 	{
 		$user = User::getById($this->app->getLoggedInUserId(), ['uid', 'nickname', 'allow_location', 'default-location']);
 		if (empty($user['uid'])) {
@@ -414,8 +414,8 @@ class Conversation
 	 * figures out how to determine page owner and other contextual items
 	 * that are based on unique features of the calling module.
 	 * @param array  $items
-	 * @param        $mode
+	 * @param string $mode
-	 * @param        $update
+	 * @param        $update @TODO Which type?
 	 * @param bool   $preview
 	 * @param string $order
 	 * @param int    $uid
@@ -423,7 +423,7 @@ class Conversation
 	 * @throws ImagickException
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public function create(array $items, $mode, $update, $preview = false, $order = 'commented', $uid = 0)
+	public function create(array $items, string $mode, $update, bool $preview = false, string $order = 'commented', int $uid = 0): string
 	{
 		$this->profiler->startRecording('rendering');
 
@@ -582,7 +582,7 @@ class Conversation
 
 					$uriids[] = $item['uri-id'];
 
-					if (!$this->item->visibleActivity($item)) {
+					if (!$this->item->isVisibleActivity($item)) {
 						continue;
 					}
 
@@ -745,7 +745,7 @@ class Conversation
 						continue;
 					}
 
-					if (!$this->item->visibleActivity($item)) {
+					if (!$this->item->isVisibleActivity($item)) {
 						continue;
 					}
 
@@ -784,7 +784,7 @@ class Conversation
 		return $o;
 	}
 
-	private function getBlocklist()
+	private function getBlocklist(): array
 	{
 		if (!local_user()) {
 			return [];
@@ -816,7 +816,7 @@ class Conversation
 	 *
 	 * @return array items with parents and comments
 	 */
-	private function addRowInformation(array $row, array $activity, array $thr_parent)
+	private function addRowInformation(array $row, array $activity, array $thr_parent): array
 	{
 		$this->profiler->startRecording('rendering');
 
@@ -911,7 +911,7 @@ class Conversation
 	 * @return array items with parents and comments
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	private function addChildren(array $parents, bool $block_authors, string $order, int $uid, string $mode)
+	private function addChildren(array $parents, bool $block_authors, string $order, int $uid, string $mode): array
 	{
 		$this->profiler->startRecording('rendering');
 		if (count($parents) > 1) {
@@ -1005,7 +1005,7 @@ class Conversation
 	 * @param bool  $recursive
 	 * @return array
 	 */
-	private function getItemChildren(array &$item_list, array $parent, $recursive = true)
+	private function getItemChildren(array &$item_list, array $parent, bool $recursive = true): array
 	{
 		$this->profiler->startRecording('rendering');
 		$children = [];
@@ -1040,7 +1040,7 @@ class Conversation
 	 * @param array $items
 	 * @return array
 	 */
-	private function sortItemChildren(array $items)
+	private function sortItemChildren(array $items): array
 	{
 		$this->profiler->startRecording('rendering');
 		$result = $items;
@@ -1086,7 +1086,7 @@ class Conversation
 	 * @param array $parent A tree-like array of items
 	 * @return array
 	 */
-	private function smartFlattenConversation(array $parent)
+	private function smartFlattenConversation(array $parent): array
 	{
 		$this->profiler->startRecording('rendering');
 		if (!isset($parent['children']) || count($parent['children']) == 0) {
@@ -1142,7 +1142,7 @@ class Conversation
 	 * @return array
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	private function convSort(array $item_list, $order)
+	private function convSort(array $item_list, string $order): array
 	{
 		$this->profiler->startRecording('rendering');
 		$parents = [];
@@ -1222,7 +1222,7 @@ class Conversation
 	 * @param array $b
 	 * @return int
 	 */
-	private function sortThrFeaturedReceived(array $a, array $b)
+	private function sortThrFeaturedReceived(array $a, array $b): int
 	{
 		if ($b['featured'] && !$a['featured']) {
 			return 1;
@@ -1240,7 +1240,7 @@ class Conversation
 	 * @param array $b
 	 * @return int
 	 */
-	private function sortThrFeaturedCommented(array $a, array $b)
+	private function sortThrFeaturedCommented(array $a, array $b): int
 	{
 		if ($b['featured'] && !$a['featured']) {
 			return 1;
@@ -1258,7 +1258,7 @@ class Conversation
 	 * @param array $b
 	 * @return int
 	 */
-	private function sortThrReceived(array $a, array $b)
+	private function sortThrReceived(array $a, array $b): int
 	{
 		return strcmp($b['received'], $a['received']);
 	}
@@ -1270,7 +1270,7 @@ class Conversation
 	 * @param array $b
 	 * @return int
 	 */
-	private function sortThrReceivedRev(array $a, array $b)
+	private function sortThrReceivedRev(array $a, array $b): int
 	{
 		return strcmp($a['received'], $b['received']);
 	}
@@ -1282,7 +1282,7 @@ class Conversation
 	 * @param array $b
 	 * @return int
 	 */
-	private function sortThrCommented(array $a, array $b)
+	private function sortThrCommented(array $a, array $b): int
 	{
 		return strcmp($b['commented'], $a['commented']);
 	}
@@ -1294,7 +1294,7 @@ class Conversation
 	 * @param array $b
 	 * @return int
 	 */
-	private function sortThrCreated(array $a, array $b)
+	private function sortThrCreated(array $a, array $b): int
 	{
 		return strcmp($b['created'], $a['created']);
 	}

src/Content/Item.php

@@ -85,7 +85,7 @@ class Item
 	 *       ]
 	 *  ]
 	 */
-	public function determineCategoriesTerms(array $item, int $uid = 0)
+	public function determineCategoriesTerms(array $item, int $uid = 0): array
 	{
 		$categories = [];
 		$folders = [];
@@ -142,15 +142,15 @@ class Item
 	 * the appropriate link.
 	 *
 	 * @param string $body        the text to replace the tag in
-	 * @param integer $profile_uid the user id to replace the tag for (0 = anyone)
+	 * @param int    $profile_uid the user id to replace the tag for (0 = anyone)
 	 * @param string $tag         the tag to replace
 	 * @param string $network     The network of the post
 	 *
-	 * @return array|bool ['replaced' => $replaced, 'contact' => $contact];
+	 * @return array|bool ['replaced' => $replaced, 'contact' => $contact] or "false" on if already replaced
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 * @throws \ImagickException
 	 */
-	public static function replaceTag(&$body, $profile_uid, $tag, $network = '')
+	public static function replaceTag(string &$body, int $profile_uid, string $tag, string $network = '')
 	{
 		$replaced = false;
 
@@ -244,16 +244,17 @@ class Item
 	/**
 	 * Render actions localized
 	 *
-	 * @param $item
+	 * @param array $item
+	 * @return void
 	 * @throws ImagickException
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public function localize(&$item)
+	public function localize(array &$item)
 	{
 		$this->profiler->startRecording('rendering');
 		/// @todo The following functionality needs to be cleaned up.
 		if (!empty($item['verb'])) {
-			$xmlhead = "<" . "?xml version='1.0' encoding='UTF-8' ?" . ">";
+			$xmlhead = '<?xml version="1.0" encoding="UTF-8" ?>';
 
 			if (stristr($item['verb'], Activity::POKE)) {
 				$verb = urldecode(substr($item['verb'], strpos($item['verb'],'#') + 1));
@@ -261,7 +262,7 @@ class Item
 					$this->profiler->stopRecording();
 					return;
 				}
-				if ($item['object-type'] == "" || $item['object-type'] !== Activity\ObjectType::PERSON) {
+				if ($item['object-type'] == '' || $item['object-type'] !== Activity\ObjectType::PERSON) {
 					$this->profiler->stopRecording();
 					return;
 				}
@@ -270,18 +271,22 @@ class Item
 
 				$Bname = $obj->title;
 				$Blink = $obj->id;
-				$Bphoto = "";
+				$Bphoto = '';
 
 				foreach ($obj->link as $l) {
 					$atts = $l->attributes();
 					switch ($atts['rel']) {
-						case "alternate": $Blink = $atts['href'];
+						case 'alternate': $Blink = $atts['href'];
-						case "photo": $Bphoto = $atts['href'];
+						case 'photo': $Bphoto = $atts['href'];
 					}
 				}
 
-				$author = ['uid' => 0, 'id' => $item['author-id'],
+				$author = [
-					'network' => $item['author-network'], 'url' => $item['author-link']];
+					'uid' => 0,
+					'id' => $item['author-id'],
+					'network' => $item['author-network'],
+					'url' => $item['author-link'],
+				];
 				$A = '[url=' . Contact::magicLinkByContact($author) . ']' . $item['author-name'] . '[/url]';
 
 				if (!empty($Blink)) {
@@ -290,7 +295,7 @@ class Item
 					$B = '';
 				}
 
-				if ($Bphoto != "" && !empty($Blink)) {
+				if ($Bphoto != '' && !empty($Blink)) {
 					$Bphoto = '[url=' . Contact::magicLink($Blink) . '][img=80x80]' . $Bphoto . '[/img][/url]';
 				}
 
@@ -305,9 +310,7 @@ class Item
 				$txt = str_replace($poked_t, $this->l10n->t($verb), $txt);
 
 				// then do the sprintf on the translation string
-
 				$item['body'] = sprintf($txt, $A, $B) . "\n\n\n" . $Bphoto;
-
 			}
 
 			if ($this->activity->match($item['verb'], Activity::TAG)) {
@@ -319,12 +322,20 @@ class Item
 					return;
 				}
 
-				$author_arr = ['uid' => 0, 'id' => $item['author-id'],
+				$author_arr = [
-					'network' => $item['author-network'], 'url' => $item['author-link']];
+					'uid' => 0,
+					'id' => $item['author-id'],
+					'network' => $item['author-network'],
+					'url' => $item['author-link'],
+				];
 				$author  = '[url=' . Contact::magicLinkByContact($author_arr) . ']' . $item['author-name'] . '[/url]';
 
-				$author_arr = ['uid' => 0, 'id' => $obj['author-id'],
+				$author_arr = [
-					'network' => $obj['author-network'], 'url' => $obj['author-link']];
+					'uid' => 0,
+					'id' => $obj['author-id'],
+					'network' => $obj['author-network'],
+					'url' => $obj['author-link'],
+				];
 				$objauthor  = '[url=' . Contact::magicLinkByContact($author_arr) . ']' . $obj['author-name'] . '[/url]';
 
 				switch ($obj['verb']) {
@@ -337,6 +348,7 @@ class Item
 								$post_type = $this->l10n->t('status');
 						}
 						break;
+
 					default:
 						if ($obj['resource-id']) {
 							$post_type = $this->l10n->t('photo');
@@ -360,25 +372,29 @@ class Item
 		$this->profiler->stopRecording();
 	}
 
-	public function photoMenu($item, string $formSecurityToken)
+	/**
+	 * Renders photo menu based on item
+	 *
+	 * @param array $item
+	 * @param string $formSecurityToken
+	 * @return string
+	 */
+	public function photoMenu(array $item, string $formSecurityToken): string
 	{
 		$this->profiler->startRecording('rendering');
-		$sub_link = '';
+		$sub_link = $poke_link = $contact_url = $pm_url = $status_link = '';
-		$poke_link = '';
+		$photos_link = $posts_link = $block_link = $ignore_link = '';
-		$contact_url = '';
-		$pm_url = '';
-		$status_link = '';
-		$photos_link = '';
-		$posts_link = '';
-		$block_link = '';
-		$ignore_link = '';
 
 		if (local_user() && local_user() == $item['uid'] && $item['gravity'] == GRAVITY_PARENT && !$item['self'] && !$item['mention']) {
 			$sub_link = 'javascript:doFollowThread(' . $item['id'] . '); return false;';
 		}
 
-		$author = ['uid' => 0, 'id' => $item['author-id'],
+		$author = [
-			'network' => $item['author-network'], 'url' => $item['author-link']];
+			'uid' => 0,
+			'id' => $item['author-id'],
+			'network' => $item['author-network'],
+			'url' => $item['author-link'],
+		];
 		$profile_link = Contact::magicLinkByContact($author, $item['author-link']);
 		$sparkle = (strpos($profile_link, 'redir/') === 0);
 
@@ -435,7 +451,7 @@ class Item
 			}
 
 			if ($network == Protocol::DFRN) {
-				$menu[$this->l10n->t("Poke")] = $poke_link;
+				$menu[$this->l10n->t('Poke')] = $poke_link;
 			}
 
 			if ((($cid == 0) || ($rel == Contact::FOLLOWER)) &&
@@ -465,24 +481,28 @@ class Item
 		return $o;
 	}
 
-	public function visibleActivity($item) {
+	/**
-
+	 * Checks if the activity is visible to current user
+	 *
+	 * @param array $item Activity item
+	 * @return bool Whether the item is visible to the user
+	 */
+	public function isVisibleActivity(array $item): bool
+	{
+		// Empty verb or hidden?
 		if (empty($item['verb']) || $this->activity->isHidden($item['verb'])) {
 			return false;
 		}
 
-		// @TODO below if() block can be rewritten to a single line: $isVisible = allConditionsHere;
+		// Check conditions
-		if ($this->activity->match($item['verb'], Activity::FOLLOW) &&
+		return (!($this->activity->match($item['verb'], Activity::FOLLOW) &&
 			$item['object-type'] === Activity\ObjectType::NOTE &&
 			empty($item['self']) &&
-			$item['uid'] == local_user()) {
+			$item['uid'] == local_user())
-			return false;
+		);
 	}
 
-		return true;
+	public function expandTags(array $item, bool $setPermissions = false): array
-	}
-
-	public function expandTags(array $item, bool $setPermissions = false)
 	{
 		// Look for any tags and linkify them
 		$item['inform'] = '';

src/Content/Nav.php

@@ -62,7 +62,7 @@ class Nav
 	 *
 	 * @param string $item
 	 */
-	public static function setSelected($item)
+	public static function setSelected(string $item)
 	{
 		self::$selected[$item] = 'selected';
 	}
@@ -74,7 +74,7 @@ class Nav
 	 * @return string
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function build(App $a)
+	public static function build(App $a): string
 	{
 		// Placeholder div for popup panel
 		$nav = '<div id="panel" style="display: none;"></div>';
@@ -106,7 +106,7 @@ class Nav
 	 *
 	 * @return array
 	 */
-	public static function getAppMenu()
+	public static function getAppMenu(): array
 	{
 		if (is_null(self::$app_menu)) {
 			self::populateAppMenu();
@@ -117,6 +117,8 @@ class Nav
 
 	/**
 	 * Fills the apps static variable with apps that require a menu
+	 *
+	 * @return void
 	 */
 	private static function populateAppMenu()
 	{

src/Content/OEmbed.php

@@ -49,7 +49,13 @@ use Friendica\Util\Strings;
  */
 class OEmbed
 {
-	public static function replaceCallback($matches)
+	/**
+	 * Callback for fetching URL, checking allowance and returning formatted HTML
+	 *
+	 * @param array $matches
+	 * @return string Formatted HTML
+	 */
+	public static function replaceCallback(array $matches): string
 	{
 		$embedurl = $matches[1];
 		$j = self::fetchURL($embedurl, !self::isAllowedURL($embedurl));
@@ -68,7 +74,7 @@ class OEmbed
 	 * @return \Friendica\Object\OEmbed
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function fetchURL($embedurl, bool $no_rich_type = false, bool $use_parseurl = true)
+	public static function fetchURL(string $embedurl, bool $no_rich_type = false, bool $use_parseurl = true): \Friendica\Object\OEmbed
 	{
 		$embedurl = trim($embedurl, '\'"');
 
@@ -209,12 +215,18 @@ class OEmbed
 		return $oembed;
 	}
 
-	private static function formatObject(\Friendica\Object\OEmbed $oembed)
+	/**
+	 * Returns a formatted string from OEmbed object
+	 *
+	 * @param \Friendica\Object\OEmbed $oembed
+	 * @return string
+	 */
+	private static function formatObject(\Friendica\Object\OEmbed $oembed): string
 	{
 		$ret = '<div class="oembed ' . $oembed->type . '">';
 
 		switch ($oembed->type) {
-			case "video":
+			case 'video':
 				if ($oembed->thumbnail_url) {
 					$tw = (isset($oembed->thumbnail_width) && intval($oembed->thumbnail_width)) ? $oembed->thumbnail_width : 200;
 					$th = (isset($oembed->thumbnail_height) && intval($oembed->thumbnail_height)) ? $oembed->thumbnail_height : 180;
@@ -236,14 +248,14 @@ class OEmbed
 				}
 				break;
 
-			case "photo":
+			case 'photo':
 				$ret .= '<img width="' . $oembed->width . '" src="' . Proxy::proxifyUrl($oembed->url) . '">';
 				break;
 
-			case "link":
+			case 'link':
 				break;
 
-			case "rich":
+			case 'rich':
 				$ret .= Proxy::proxifyHtml($oembed->html);
 				break;
 		}
@@ -292,9 +304,15 @@ class OEmbed
 		return str_replace("\n", "", $ret);
 	}
 
-	public static function BBCode2HTML($text)
+	/**
+	 * Converts BBCode to HTML code
+	 *
+	 * @param string $text
+	 * @return string
+	 */
+	public static function BBCode2HTML(string $text): string
 	{
-		$stopoembed = DI::config()->get("system", "no_oembed");
+		$stopoembed = DI::config()->get('system', 'no_oembed');
 		if ($stopoembed == true) {
 			return preg_replace("/\[embed\](.+?)\[\/embed\]/is", "<!-- oembed $1 --><i>" . DI::l10n()->t('Embedding disabled') . " : $1</i><!-- /oembed $1 -->", $text);
 		}
@@ -305,14 +323,13 @@ class OEmbed
 	 * Find <span class='oembed'>..<a href='url' rel='oembed'>..</a></span>
 	 * and replace it with [embed]url[/embed]
 	 *
-	 * @param $text
+	 * @param string $text
 	 * @return string
 	 */
-	public static function HTML2BBCode($text)
+	public static function HTML2BBCode(string $text): string
 	{
 		// start parser only if 'oembed' is in text
-		if (strpos($text, "oembed")) {
+		if (strpos($text, 'oembed')) {
-
 			// convert non ascii chars to html entities
 			$html_text = mb_convert_encoding($text, 'HTML-ENTITIES', mb_detect_encoding($text));
 
@@ -323,17 +340,17 @@ class OEmbed
 			}
 			$xpath = new DOMXPath($dom);
 
-			$xattr = self::buildXPath("class", "oembed");
+			$xattr = self::buildXPath('class', 'oembed');
 			$entries = $xpath->query("//div[$xattr]");
 
 			$xattr = "@rel='oembed'"; //oe_build_xpath("rel","oembed");
 			foreach ($entries as $e) {
 				$href = $xpath->evaluate("a[$xattr]/@href", $e)->item(0)->nodeValue;
 				if (!is_null($href)) {
-					$e->parentNode->replaceChild(new DOMText("[embed]" . $href . "[/embed]"), $e);
+					$e->parentNode->replaceChild(new DOMText('[embed]' . $href . '[/embed]'), $e);
 				}
 			}
-			return self::getInnerHTML($dom->getElementsByTagName("body")->item(0));
+			return self::getInnerHTML($dom->getElementsByTagName('body')->item(0));
 		} else {
 			return $text;
 		}
@@ -346,7 +363,7 @@ class OEmbed
 	 * @return boolean
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function isAllowedURL($url)
+	public static function isAllowedURL(string $url): bool
 	{
 		if (!DI::config()->get('system', 'no_oembed_rich_content')) {
 			return true;
@@ -367,7 +384,14 @@ class OEmbed
 		return Network::isDomainAllowed($domain, $allowed);
 	}
 
-	public static function getHTML($url, $title = null)
+	/**
+	 * Returns a formmated HTML code from given URL and sets optional title
+	 *
+	 * @param string $url URL to fetch
+	 * @param string $title Optional title (default: what comes from OEmbed object)
+	 * @return string Formatted HTML
+	 */
+	public static function getHTML(string $url, string $title = '')
 	{
 		$o = self::fetchURL($url, !self::isAllowedURL($url));
 
@@ -401,12 +425,12 @@ class OEmbed
 	 * @param string $src Original remote URL to embed
 	 * @param string $width
 	 * @param string $height
-	 * @return string formatted HTML
+	 * @return string Formatted HTML
 	 *
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 * @see   oembed_format_object()
 	 */
-	private static function iframe($src, $width, $height)
+	private static function iframe(string $src, string $width, string $height): string
 	{
 		if (!$height || strstr($height, '%')) {
 			$height = '200';
@@ -427,7 +451,7 @@ class OEmbed
 	 * @param string $value Value to search in a space-separated list
 	 * @return string
 	 */
-	private static function buildXPath($attr, $value)
+	private static function buildXPath(string $attr, $value): string
 	{
 		// https://www.westhoffswelt.de/blog/2009/6/9/select-html-elements-with-more-than-one-css-class-using-xpath
 		return "contains(normalize-space(@$attr), ' $value ') or substring(normalize-space(@$attr), 1, string-length('$value') + 1) = '$value ' or substring(normalize-space(@$attr), string-length(@$attr) - string-length('$value')) = ' $value' or @$attr = '$value'";
@@ -439,7 +463,7 @@ class OEmbed
 	 * @param DOMNode $node
 	 * @return string
 	 */
-	private static function getInnerHTML(DOMNode $node)
+	private static function getInnerHTML(DOMNode $node): string
 	{
 		$innerHTML = '';
 		$children = $node->childNodes;

src/Content/PageInfo.php

@@ -64,7 +64,7 @@ class PageInfo
 	 * @return string
 	 * @throws HTTPException\InternalServerErrorException
 	 */
-	public static function appendDataToBody(string $body, array $data, bool $no_photos = false)
+	public static function appendDataToBody(string $body, array $data, bool $no_photos = false): string
 	{
 		// Only one [attachment] tag per body is allowed
 		$existingAttachmentPos = strpos($body, '[attachment');
@@ -90,7 +90,7 @@ class PageInfo
 	 * @return string
 	 * @throws HTTPException\InternalServerErrorException
 	 */
-	public static function getFooterFromUrl(string $url, bool $no_photos = false, string $photo = '', bool $keywords = false, string $keyword_denylist = '')
+	public static function getFooterFromUrl(string $url, bool $no_photos = false, string $photo = '', bool $keywords = false, string $keyword_denylist = ''): string
 	{
 		$data = self::queryUrl($url, $photo, $keywords, $keyword_denylist);
 
@@ -103,7 +103,7 @@ class PageInfo
 	 * @return string
 	 * @throws HTTPException\InternalServerErrorException
 	 */
-	public static function getFooterFromData(array $data, bool $no_photos = false)
+	public static function getFooterFromData(array $data, bool $no_photos = false): string
 	{
 		Hook::callAll('page_info_data', $data);
 
@@ -220,7 +220,7 @@ class PageInfo
 	 * @return array
 	 * @throws HTTPException\InternalServerErrorException
 	 */
-	public static function getTagsFromUrl(string $url, string $photo = '', string $keyword_denylist = '')
+	public static function getTagsFromUrl(string $url, string $photo = '', string $keyword_denylist = ''): array
 	{
 		$data = self::queryUrl($url, $photo, true, $keyword_denylist);
 
@@ -282,7 +282,7 @@ class PageInfo
 	 * @param string $url
 	 * @return string
 	 */
-	protected static function stripTrailingUrlFromBody(string $body, string $url)
+	protected static function stripTrailingUrlFromBody(string $body, string $url): string
 	{
 		$quotedUrl = preg_quote($url, '#');
 		$body = preg_replace_callback("#(?:

src/Content/Pager.php

@@ -50,9 +50,9 @@ class Pager
 	 *
 	 * @param L10n   $l10n
 	 * @param string $queryString  The query string of the current page
-	 * @param integer $itemsPerPage An optional number of items per page to override the default value
+	 * @param int    $itemsPerPage An optional number of items per page to override the default value
 	 */
-	public function __construct(L10n $l10n, $queryString, $itemsPerPage = 50)
+	public function __construct(L10n $l10n, string $queryString, int $itemsPerPage = 50)
 	{
 		$this->l10n = $l10n;
 
@@ -64,9 +64,9 @@ class Pager
 	/**
 	 * Returns the start offset for a LIMIT clause. Starts at 0.
 	 *
-	 * @return integer
+	 * @return int
 	 */
-	public function getStart()
+	public function getStart(): int
 	{
 		return max(0, ($this->page * $this->itemsPerPage) - $this->itemsPerPage);
 	}
@@ -74,9 +74,9 @@ class Pager
 	/**
 	 * Returns the number of items per page
 	 *
-	 * @return integer
+	 * @return int
 	 */
-	public function getItemsPerPage()
+	public function getItemsPerPage(): int
 	{
 		return $this->itemsPerPage;
 	}
@@ -86,7 +86,7 @@ class Pager
 	 *
 	 * @return int
 	 */
-	public function getPage()
+	public function getPage(): int
 	{
 		return $this->page;
 	}
@@ -108,9 +108,9 @@ class Pager
 	/**
 	 * Sets the number of items per page, 1 minimum.
 	 *
-	 * @param integer $itemsPerPage
+	 * @param int $itemsPerPage
 	 */
-	public function setItemsPerPage($itemsPerPage)
+	public function setItemsPerPage(int $itemsPerPage)
 	{
 		$this->itemsPerPage = max(1, intval($itemsPerPage));
 	}
@@ -118,11 +118,11 @@ class Pager
 	/**
 	 * Sets the current page number. Starts at 1.
 	 *
-	 * @param integer $page
+	 * @param int $page
 	 */
-	public function setPage($page)
+	public function setPage(int $page)
 	{
-		$this->page = max(1, intval($page));
+		$this->page = max(1, $page);
 	}
 
 	/**
@@ -132,7 +132,7 @@ class Pager
 	 *
 	 * @param string $queryString
 	 */
-	public function setQueryString($queryString)
+	public function setQueryString(string $queryString)
 	{
 		$stripped = preg_replace('/([&?]page=[0-9]*)/', '', $queryString);
 
@@ -160,7 +160,7 @@ class Pager
 	 * @return string HTML string of the pager
 	 * @throws \Exception
 	 */
-	public function renderMinimal(int $itemCount)
+	public function renderMinimal(int $itemCount): string
 	{
 		$displayedItemCount = max(0, intval($itemCount));
 
@@ -199,13 +199,13 @@ class Pager
 	 *
 	 * $html = $pager->renderFull();
 	 *
-	 * @param integer $itemCount The total number of items including those note displayed on the page
+	 * @param int $itemCount The total number of items including those note displayed on the page
 	 * @return string HTML string of the pager
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public function renderFull($itemCount)
+	public function renderFull(int $itemCount): string
 	{
-		$totalItemCount = max(0, intval($itemCount));
+		$totalItemCount = max(0, $itemCount);
 
 		$data = [];
 

src/Content/Smilies.php

@@ -39,10 +39,9 @@ class Smilies
 	 * @param array  $b              Array of emoticons
 	 * @param string $smiley         The text smilie
 	 * @param string $representation The replacement
-	 *
 	 * @return void
 	 */
-	public static function add(&$b, $smiley, $representation)
+	public static function add(array &$b, string $smiley, string $representation)
 	{
 		$found = array_search($smiley, $b['texts']);
 
@@ -66,7 +65,7 @@ class Smilies
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 * @hook  smilie ('texts' => smilies texts array, 'icons' => smilies html array)
 	 */
-	public static function getList()
+	public static function getList(): array
 	{
 		$texts =  [
 			'<3',
@@ -169,7 +168,7 @@ class Smilies
 	 *
 	 * @return string $subject with all substrings in the $search array replaced by the values in the $replace array
 	 */
-	private static function strOrigReplace($search, $replace, $subject)
+	private static function strOrigReplace(array $search, array $replace, string $subject): string
 	{
 		return strtr($subject, array_combine($search, $replace));
 	}
@@ -191,7 +190,7 @@ class Smilies
 	 * @return string HTML Output of the Smilie
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function replace($s, $no_images = false)
+	public static function replace(string $s, bool $no_images = false): string
 	{
 		$smilies = self::getList();
 
@@ -211,7 +210,7 @@ class Smilies
 	 * @return string
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function replaceFromArray($text, array $smilies, $no_images = false)
+	public static function replaceFromArray(string $text, array $smilies, bool $no_images = false): string
 	{
 		if (intval(DI::config()->get('system', 'no_smilies'))
 			|| (local_user() && intval(DI::pConfig()->get(local_user(), 'system', 'no_smilies')))
@@ -234,7 +233,7 @@ class Smilies
 			$smilies = $cleaned;
 		}
 
-		$text = preg_replace_callback('/<(3+)/', 'self::pregHeart', $text);
+		$text = preg_replace_callback('/<(3+)/', 'self::heartReplaceCallback', $text);
 		$text = self::strOrigReplace($smilies['texts'], $smilies['icons'], $text);
 
 		$text = preg_replace_callback('/<(code)>(.*?)<\/code>/ism', 'self::decode', $text);
@@ -244,22 +243,24 @@ class Smilies
 	}
 
 	/**
-	 * @param string $m string
+	 * Encodes smiley match array to BASE64 string
 	 *
+	 * @param array $m Match array
 	 * @return string base64 encoded string
 	 */
-	private static function encode($m)
+	private static function encode(array $m): string
 	{
 		return '<' . $m[1] . '>' . Strings::base64UrlEncode($m[2]) . '</' . $m[1] . '>';
 	}
 
 	/**
-	 * @param string $m string
+	 * Decodes a previously BASE64-encoded match array to a string
 	 *
+	 * @param array $m Matches array
 	 * @return string base64 decoded string
 	 * @throws \Exception
 	 */
-	private static function decode($m)
+	private static function decode(array $m): string
 	{
 		return '<' . $m[1] . '>' . Strings::base64UrlDecode($m[2]) . '</' . $m[1] . '>';
 	}
@@ -268,24 +269,20 @@ class Smilies
 	/**
 	 * expand <3333 to the correct number of hearts
 	 *
-	 * @param string $x string
+	 * @param array $matches
-	 *
 	 * @return string HTML Output
-	 *
-	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	private static function pregHeart($x)
+	private static function heartReplaceCallback(array $matches): string
 	{
-		if (strlen($x[1]) == 1) {
+		if (strlen($matches[1]) == 1) {
-			return $x[0];
+			return $matches[0];
 		}
 
 		$t = '';
-		for ($cnt = 0; $cnt < strlen($x[1]); $cnt ++) {
+		for ($cnt = 0; $cnt < strlen($matches[1]); $cnt ++) {
 			$t .= '❤';
 		}
 
-		$r =  str_replace($x[0], $t, $x[0]);
+		return str_replace($matches[0], $t, $matches[0]);
-		return $r;
 	}
 }

src/Content/Text/BBCode.php

@@ -81,7 +81,7 @@ class BBCode
 	 *                     'description' -> Description of the attachment
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	private static function getOldAttachmentData($body)
+	private static function getOldAttachmentData(string $body): array
 	{
 		$post = [];
 
@@ -152,7 +152,7 @@ class BBCode
 	 *                     'description' -> Description of the attachment
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function getAttachmentData($body)
+	public static function getAttachmentData(string $body): array
 	{
 		DI::profiler()->startRecording('rendering');
 		$data = [
@@ -187,26 +187,31 @@ class BBCode
 					case 'publisher_name':
 						$data['provider_name'] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
 						break;
+
 					case 'publisher_url':
 						$data['provider_url'] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
 						break;
+
 					case 'author_name':
 						$data['author_name'] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
 						if ($data['provider_name'] == $data['author_name']) {
 							$data['author_name'] = '';
 						}
 						break;
+
 					case 'author_url':
 						$data['author_url'] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
 						if ($data['provider_url'] == $data['author_url']) {
 							$data['author_url'] = '';
 						}
 						break;
+
 					case 'title':
 						$value = self::convert(html_entity_decode($value, ENT_QUOTES, 'UTF-8'), false, true);
 						$value = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
 						$value = str_replace(['[', ']'], ['[', ']'], $value);
 						$data['title'] = $value;
+
 					default:
 						$data[$field] = html_entity_decode($value, ENT_QUOTES, 'UTF-8');
 						break;
@@ -241,7 +246,7 @@ class BBCode
 		return $data;
 	}
 
-	public static function getAttachedData($body, $item = [])
+	public static function getAttachedData(string $body, array $item = []): array
 	{
 		/*
 		- text:
@@ -303,7 +308,7 @@ class BBCode
 					// Workaround:
 					// Sometimes photo posts to the own album are not detected at the start.
 					// So we seem to cannot use the cache for these cases. That's strange.
-					if (($data['type'] != 'photo') && strstr($pictures[0][1], "/photos/")) {
+					if (($data['type'] != 'photo') && strstr($pictures[0][1], '/photos/')) {
 						$data = ParseUrl::getSiteinfo($pictures[0][1]);
 					}
 
@@ -320,7 +325,7 @@ class BBCode
 						$post['text'] = trim(str_replace($pictures[0][0], '', $body));
 					} else {
 						$imgdata = Images::getInfoFromURLCached($pictures[0][1]);
-						if ($imgdata && substr($imgdata['mime'], 0, 6) == 'image/') {
+						if (($imgdata) && substr($imgdata['mime'], 0, 6) == 'image/') {
 							$post['type'] = 'photo';
 							$post['image'] = $pictures[0][1];
 							$post['preview'] = $pictures[0][2];
@@ -390,7 +395,7 @@ class BBCode
 			}
 
 			if (!isset($post['type'])) {
-				$post['type'] = "text";
+				$post['type'] = 'text';
 				$post['text'] = trim($body);
 			}
 
@@ -419,10 +424,9 @@ class BBCode
 	 *
 	 * @param string  $body
 	 * @param boolean $no_link_desc No link description
-	 *
 	 * @return string with replaced body
 	 */
-	public static function removeAttachment($body, $no_link_desc = false)
+	public static function removeAttachment(string $body, bool $no_link_desc = false): string
 	{
 		return preg_replace_callback("/\s*\[attachment (.*?)\](.*?)\[\/attachment\]\s*/ism",
 			function ($match) use ($body, $no_link_desc) {
@@ -442,12 +446,11 @@ class BBCode
 	/**
 	 * Converts a BBCode text into plaintext
 	 *
-	 * @param      $text
+	 * @param string $text
 	 * @param bool $keep_urls Whether to keep URLs in the resulting plaintext
-	 *
 	 * @return string
 	 */
-	public static function toPlaintext($text, $keep_urls = true)
+	public static function toPlaintext(string $text, bool $keep_urls = true): string
 	{
 		DI::profiler()->startRecording('rendering');
 		// Remove pictures in advance to avoid unneeded proxy calls
@@ -463,7 +466,7 @@ class BBCode
 		return $naked_text;
 	}
 
-	private static function proxyUrl($image, $simplehtml = self::INTERNAL, $uriid = 0, $size = '')
+	private static function proxyUrl(string $image, int $simplehtml = self::INTERNAL, int $uriid = 0, string $size = ''): string
 	{
 		// Only send proxied pictures to API and for internal display
 		if (!in_array($simplehtml, [self::INTERNAL, self::API])) {
@@ -483,7 +486,7 @@ class BBCode
 	 * @param string $srctext The body with images
 	 * @return string The body with possibly scaled images
 	 */
-	public static function scaleExternalImages(string $srctext)
+	public static function scaleExternalImages(string $srctext): string
 	{
 		DI::profiler()->startRecording('rendering');
 		$s = $srctext;
@@ -551,7 +554,7 @@ class BBCode
 	 * @return string
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function limitBodySize($body)
+	public static function limitBodySize(string $body): string
 	{
 		DI::profiler()->startRecording('rendering');
 		$maxlen = DI::config()->get('config', 'max_import_size', 0);
@@ -646,7 +649,7 @@ class BBCode
 	 * @return string
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function convertAttachment($text, $simplehtml = self::INTERNAL, $tryoembed = true, array $data = [], $uriid = 0)
+	public static function convertAttachment(string $text, int $simplehtml = self::INTERNAL, bool $tryoembed = true, array $data = [], int $uriid = 0): string
 	{
 		DI::profiler()->startRecording('rendering');
 		$data = $data ?: self::getAttachmentData($text);
@@ -659,10 +662,10 @@ class BBCode
 			$data['title'] = strip_tags($data['title']);
 			$data['title'] = str_replace(['http://', 'https://'], '', $data['title']);
 		} else {
-			$data['title'] = null;
+			$data['title'] = '';
 		}
 
-		if (((strpos($data['text'], "[img=") !== false) || (strpos($data['text'], "[img]") !== false) || DI::config()->get('system', 'always_show_preview')) && !empty($data['image'])) {
+		if (((strpos($data['text'], '[img=') !== false) || (strpos($data['text'], '[img]') !== false) || DI::config()->get('system', 'always_show_preview')) && !empty($data['image'])) {
 			$data['preview'] = $data['image'];
 			$data['image'] = '';
 		}
@@ -716,14 +719,14 @@ class BBCode
 		return trim(($data['text'] ?? '') . ' ' . $return . ' ' . ($data['after'] ?? ''));
 	}
 
-	public static function removeShareInformation($Text, $plaintext = false, $nolink = false)
+	public static function removeShareInformation(string $text, bool $plaintext = false, bool $nolink = false): string
 	{
 		DI::profiler()->startRecording('rendering');
-		$data = self::getAttachmentData($Text);
+		$data = self::getAttachmentData($text);
 
 		if (!$data) {
 			DI::profiler()->stopRecording();
-			return $Text;
+			return $text;
 		} elseif ($nolink) {
 			DI::profiler()->stopRecording();
 			return $data['text'] . ($data['after'] ?? '');
@@ -767,7 +770,7 @@ class BBCode
 	 * @param array $match Array with the matching values
 	 * @return string reformatted link including HTML codes
 	 */
-	private static function convertUrlForActivityPubCallback($match)
+	private static function convertUrlForActivityPubCallback(array $match): string
 	{
 		$url = $match[1];
 
@@ -789,10 +792,9 @@ class BBCode
 	 * @param string $url URL that is about to be reformatted
 	 * @return string reformatted link including HTML codes
 	 */
-	private static function convertUrlForActivityPub($url)
+	private static function convertUrlForActivityPub(string $url): string
 	{
-		$html = '<a href="%s" target="_blank" rel="noopener noreferrer">%s</a>';
+		return sprintf('<a href="%s" target="_blank" rel="noopener noreferrer">%s</a>', $url, self::getStyledURL($url));
-		return sprintf($html, $url, self::getStyledURL($url));
 	}
 
 	/**
@@ -801,7 +803,7 @@ class BBCode
 	 * @param string $url URL that is about to be reformatted
 	 * @return string reformatted link
 	 */
-	private static function getStyledURL($url)
+	private static function getStyledURL(string $url): string
 	{
 		$parts = parse_url($url);
 		$scheme = $parts['scheme'] . '://';
@@ -818,8 +820,11 @@ class BBCode
 	 * [noparse][i]italic[/i][/noparse] turns into
 	 * [noparse][ i ]italic[ /i ][/noparse],
 	 * to hide them from parser.
+	 *
+	 * @param array $match
+	 * @return string
 	 */
-	private static function escapeNoparseCallback($match)
+	private static function escapeNoparseCallback(array $match): string
 	{
 		$whole_match = $match[0];
 		$captured = $match[1];
@@ -832,8 +837,11 @@ class BBCode
 	 * The previously spacefied [noparse][ i ]italic[ /i ][/noparse],
 	 * now turns back and the [noparse] tags are trimed
 	 * returning [i]italic[/i]
+	 *
+	 * @param array $match
+	 * @return string
 	 */
-	private static function unescapeNoparseCallback($match)
+	private static function unescapeNoparseCallback(array $match): string
 	{
 		$captured = $match[1];
 		$unspacefied = preg_replace("/\[ (.*?)\ ]/", "[$1]", $captured);
@@ -849,7 +857,7 @@ class BBCode
 	 * @param int    $occurrences Number of first occurrences to skip
 	 * @return boolean|array
 	 */
-	public static function getTagPosition($text, $name, $occurrences = 0)
+	public static function getTagPosition(string $text, string $name, int $occurrences = 0)
 	{
 		DI::profiler()->startRecording('rendering');
 		if ($occurrences < 0) {
@@ -913,7 +921,7 @@ class BBCode
 	 * @param string $text    Text to search
 	 * @return string
 	 */
-	public static function pregReplaceInTag($pattern, $replace, $name, $text)
+	public static function pregReplaceInTag(string $pattern, string $replace, string $name, string $text): string
 	{
 		DI::profiler()->startRecording('rendering');
 		$occurrences = 0;
@@ -936,7 +944,7 @@ class BBCode
 		return $text;
 	}
 
-	private static function extractImagesFromItemBody($body)
+	private static function extractImagesFromItemBody(string $body): array
 	{
 		$saved_image = [];
 		$orig_body = $body;
@@ -977,7 +985,7 @@ class BBCode
 		return ['body' => $new_body, 'images' => $saved_image];
 	}
 
-	private static function interpolateSavedImagesIntoItemBody($uriid, $body, array $images)
+	private static function interpolateSavedImagesIntoItemBody(int $uriid, string $body, array $images): string
 	{
 		$newbody = $body;
 
@@ -995,29 +1003,51 @@ class BBCode
 	}
 
 	/**
-	 *
 	 * @param string $text A BBCode string
-	 * @return array share attributes
+	 * @return array Empty array if no share tag is present or the following array, missing attributes end up empty strings:
+	 *               - comment: Text before the opening share tag
+	 *               - shared : Text inside the share tags
+	 *               - author : (Optional) Display name of the shared author
+	 *               - profile: (Optional) Profile page URL of the shared author
+	 *               - avatar : (Optional) Profile picture URL of the shared author
+	 *               - link   : (Optional) Canonical URL of the shared post
+	 *               - posted : (Optional) Date the shared post was initially posted ("Y-m-d H:i:s" in GMT)
+	 *               - guid   : (Optional) Shared post GUID if any
 	 */
-	public static function fetchShareAttributes($text)
+	public static function fetchShareAttributes(string $text): array
 	{
 		DI::profiler()->startRecording('rendering');
 		// See Issue https://github.com/friendica/friendica/issues/10454
 		// Hashtags in usernames are expanded to links. This here is a quick fix.
-		$text = preg_replace('/([@!#])\[url\=.*?\](.*?)\[\/url\]/ism', '$1$2', $text);
+		$text = preg_replace('~([@!#])\[url=.*?](.*?)\[/url]~ism', '$1$2', $text);
+
+		if (!preg_match('~(.*?)\[share(.*?)](.*)\[/share]~ism', $text, $matches)) {
+			DI::profiler()->stopRecording();
+			return [];
+		}
+
+		$attributes = self::extractShareAttributes($matches[2]);
+
+		$attributes['comment'] = trim($matches[1]);
+		$attributes['shared'] = trim($matches[3]);
 
-		$attributes = [];
-		if (!preg_match("/(.*?)\[share(.*?)\](.*)\[\/share\]/ism", $text, $matches)) {
 		DI::profiler()->stopRecording();
 		return $attributes;
 	}
 
-		$attribute_string = $matches[2];
+	/**
+	 * @see BBCode::fetchShareAttributes()
+	 * @param string $shareString Internal opening share tag string matched by the regular expression
+	 * @return array A fixed attribute array where missing attribute are represented by empty strings
+	 */
+	private static function extractShareAttributes(string $shareString): array
+	{
+		$attributes = [];
 		foreach (['author', 'profile', 'avatar', 'link', 'posted', 'guid'] as $field) {
-			preg_match("/$field=(['\"])(.+?)\\1/ism", $attribute_string, $matches);
+			preg_match("/$field=(['\"])(.+?)\\1/ism", $shareString, $matches);
 			$attributes[$field] = html_entity_decode($matches[2] ?? '', ENT_QUOTES, 'UTF-8');
 		}
-		DI::profiler()->stopRecording();
+
 		return $attributes;
 	}
 
@@ -1040,18 +1070,13 @@ class BBCode
 	 * @param  callable $callback
 	 * @return string The BBCode string with all [share] blocks replaced
 	 */
-	public static function convertShare($text, callable $callback, int $uriid = 0)
+	public static function convertShare(string $text, callable $callback, int $uriid = 0): string
 	{
 		DI::profiler()->startRecording('rendering');
 		$return = preg_replace_callback(
-			"/(.*?)\[share(.*?)\](.*)\[\/share\]/ism",
+			'~(.*?)\[share(.*?)](.*)\[/share]~ism',
 			function ($match) use ($callback, $uriid) {
-				$attribute_string = $match[2];
+				$attributes = self::extractShareAttributes($match[2]);
-				$attributes = [];
-				foreach (['author', 'profile', 'avatar', 'link', 'posted', 'guid'] as $field) {
-					preg_match("/$field=(['\"])(.+?)\\1/ism", $attribute_string, $matches);
-					$attributes[$field] = html_entity_decode($matches[2] ?? '', ENT_QUOTES, 'UTF-8');
-				}
 
 				$author_contact = Contact::getByURL($attributes['profile'], false, ['id', 'url', 'addr', 'name', 'micro']);
 				$author_contact['url'] = ($author_contact['url'] ?? $attributes['profile']);
@@ -1129,7 +1154,7 @@ class BBCode
 	 * @return string
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	private static function convertShareCallback(array $attributes, array $author_contact, $content, $is_quote_share, $simplehtml)
+	private static function convertShareCallback(array $attributes, array $author_contact, string $content, bool $is_quote_share, int $simplehtml): string
 	{
 		DI::profiler()->startRecording('rendering');
 		$mention = $attributes['author'] . ' (' . ($author_contact['addr'] ?? '') . ')';
@@ -1198,7 +1223,7 @@ class BBCode
 		return $text;
 	}
 
-	private static function removePictureLinksCallback($match)
+	private static function removePictureLinksCallback(array $match): string
 	{
 		$cache_key = 'remove:' . $match[1];
 		$text = DI::cache()->get($cache_key);
@@ -1212,9 +1237,9 @@ class BBCode
 			}
 
 			if (substr($mimetype, 0, 6) == 'image/') {
-				$text = "[url=" . $match[1] . ']' . $match[1] . "[/url]";
+				$text = '[url=' . $match[1] . ']' . $match[1] . '[/url]';
 			} else {
-				$text = "[url=" . $match[2] . ']' . $match[2] . "[/url]";
+				$text = '[url=' . $match[2] . ']' . $match[2] . '[/url]';
 
 				// if its not a picture then look if its a page that contains a picture link
 				$body = DI::httpClient()->fetch($match[1], HttpClientAccept::HTML, 0);
@@ -1226,7 +1251,7 @@ class BBCode
 				$doc = new DOMDocument();
 				@$doc->loadHTML($body);
 				$xpath = new DOMXPath($doc);
-				$list = $xpath->query("//meta[@name]");
+				$list = $xpath->query('//meta[@name]');
 				foreach ($list as $node) {
 					$attr = [];
 
@@ -1247,16 +1272,28 @@ class BBCode
 		return $text;
 	}
 
-	private static function expandLinksCallback($match)
+	/**
+	 * Callback: Expands links from given $match array
+	 *
+	 * @param arrat $match Array with link match
+	 * @return string BBCode
+	 */
+	private static function expandLinksCallback(array $match): string
 	{
 		if (($match[3] == '') || ($match[2] == $match[3]) || stristr($match[2], $match[3])) {
-			return ($match[1] . "[url]" . $match[2] . "[/url]");
+			return ($match[1] . '[url]' . $match[2] . '[/url]');
 		} else {
-			return ($match[1] . $match[3] . " [url]" . $match[2] . "[/url]");
+			return ($match[1] . $match[3] . ' [url]' . $match[2] . '[/url]');
 		}
 	}
 
-	private static function cleanPictureLinksCallback($match)
+	/**
+	 * Callback: Cleans picture links
+	 *
+	 * @param arrat $match Array with link match
+	 * @return string BBCode
+	 */
+	private static function cleanPictureLinksCallback(array $match): string
 	{
 		// When the picture link is the own photo path then we can avoid fetching the link
 		$own_photo_url = preg_quote(Strings::normaliseLink(DI::baseUrl()->get()) . '/photos/');
@@ -1302,7 +1339,7 @@ class BBCode
 			$doc = new DOMDocument();
 			@$doc->loadHTML($body);
 			$xpath = new DOMXPath($doc);
-			$list = $xpath->query("//meta[@name]");
+			$list = $xpath->query('//meta[@name]');
 			foreach ($list as $node) {
 				$attr = [];
 				if ($node->attributes->length) {
@@ -1325,7 +1362,13 @@ class BBCode
 		return $text;
 	}
 
-	public static function cleanPictureLinks($text)
+	/**
+	 * Cleans picture links
+	 *
+	 * @param string $text HTML/BBCode string
+	 * @return string Cleaned HTML/BBCode
+	 */
+	public static function cleanPictureLinks(string $text): string
 	{
 		DI::profiler()->startRecording('rendering');
 		$return = preg_replace_callback("&\[url=([^\[\]]*)\]\[img=(.*)\](.*)\[\/img\]\[\/url\]&Usi", 'self::cleanPictureLinksCallback', $text);
@@ -1334,7 +1377,13 @@ class BBCode
 		return $return;
 	}
 
-	public static function removeLinks(string $bbcode)
+	/**
+	 * Removes links
+	 *
+	 * @param string $text HTML/BBCode string
+	 * @return string Cleaned HTML/BBCode
+	 */
+	public static function removeLinks(string $bbcode): string
 	{
 		DI::profiler()->startRecording('rendering');
 		$bbcode = preg_replace("/\[img\=(.*?)\](.*?)\[\/img\]/ism", ' $1 ', $bbcode);
@@ -1350,7 +1399,7 @@ class BBCode
 	/**
 	 * Replace names in mentions with nicknames
 	 *
-	 * @param string $body
+	 * @param string $body HTML/BBCode
 	 * @return string Body with replaced mentions
 	 */
 	public static function setMentionsToNicknames(string $body): string
@@ -1366,10 +1415,10 @@ class BBCode
 	 * Callback function to replace a Friendica style mention in a mention with the nickname
 	 *
 	 * @param array $match Matching values for the callback
-	 * @return string Replaced mention
+	 * @return string Replaced mention or empty string
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	private static function mentionCallback($match)
+	private static function mentionCallback(array $match): string
 	{
 		if (empty($match[2])) {
 			return '';
@@ -1407,7 +1456,7 @@ class BBCode
 	 * @return string
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function convertForUriId(int $uriid = null, string $text = null, int $simple_html = self::INTERNAL)
+	public static function convertForUriId(int $uriid = null, string $text = null, int $simple_html = self::INTERNAL): string
 	{
 		$try_oembed = ($simple_html == self::INTERNAL);
 
@@ -1437,10 +1486,10 @@ class BBCode
 	 * @param int    $simple_html
 	 * @param bool   $for_plaintext
 	 * @param int    $uriid
-	 * @return string
+	 * @return string Converted code or empty string
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function convert(string $text = null, $try_oembed = true, $simple_html = self::INTERNAL, $for_plaintext = false, $uriid = 0)
+	public static function convert(string $text = null, bool $try_oembed = true, int $simple_html = self::INTERNAL, bool $for_plaintext = false, int $uriid = 0): string
 	{
 		// Accounting for null default column values
 		if (is_null($text) || $text === '') {
@@ -1462,10 +1511,10 @@ class BBCode
 				 * $match[1] = $url
 				 * $match[2] = $title or absent
 				 */
-				$try_oembed_callback = function ($match)
+				$try_oembed_callback = function (array $match)
 				{
 					$url = $match[1];
-					$title = $match[2] ?? null;
+					$title = $match[2] ?? '';
 
 					try {
 						$return = OEmbed::getHTML($url, $title);
@@ -1788,7 +1837,7 @@ class BBCode
 
 				$text = preg_replace("/\[crypt\](.*?)\[\/crypt\]/ism", '<br><img src="' .DI::baseUrl() . '/images/lock_icon.gif" alt="' . DI::l10n()->t('Encrypted content') . '" title="' . DI::l10n()->t('Encrypted content') . '" /><br>', $text);
 				$text = preg_replace("/\[crypt(.*?)\](.*?)\[\/crypt\]/ism", '<br><img src="' .DI::baseUrl() . '/images/lock_icon.gif" alt="' . DI::l10n()->t('Encrypted content') . '" title="' . '$1' . ' ' . DI::l10n()->t('Encrypted content') . '" /><br>', $text);
-				//$Text = preg_replace("/\[crypt=(.*?)\](.*?)\[\/crypt\]/ism", '<br><img src="' .DI::baseUrl() . '/images/lock_icon.gif" alt="' . DI::l10n()->t('Encrypted content') . '" title="' . '$1' . ' ' . DI::l10n()->t('Encrypted content') . '" /><br>', $Text);
+				//$text = preg_replace("/\[crypt=(.*?)\](.*?)\[\/crypt\]/ism", '<br><img src="' .DI::baseUrl() . '/images/lock_icon.gif" alt="' . DI::l10n()->t('Encrypted content') . '" title="' . '$1' . ' ' . DI::l10n()->t('Encrypted content') . '" /><br>', $text);
 
 				// Simplify "video" element
 				$text = preg_replace('(\[video[^\]]*?\ssrc\s?=\s?([^\s\]]+)[^\]]*?\].*?\[/video\])ism', '[video]$1[/video]', $text);
@@ -1916,7 +1965,7 @@ class BBCode
 
 				if (in_array($simple_html, [self::OSTATUS, self::TWITTER])) {
 					$text = preg_replace_callback("/([^#@!])\[url\=([^\]]*)\](.*?)\[\/url\]/ism", "self::expandLinksCallback", $text);
-					//$Text = preg_replace("/[^#@!]\[url\=([^\]]*)\](.*?)\[\/url\]/ism", ' $2 [url]$1[/url]', $Text);
+					//$text = preg_replace("/[^#@!]\[url\=([^\]]*)\](.*?)\[\/url\]/ism", ' $2 [url]$1[/url]', $text);
 					$text = preg_replace("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", ' $2 [url]$1[/url]', $text);
 				}
 
@@ -2142,7 +2191,7 @@ class BBCode
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 * @throws \ImagickException
 	 */
-	private static function bbCodeMention2DiasporaCallback($match)
+	private static function bbCodeMention2DiasporaCallback(array $match): string
 	{
 		$contact = Contact::getByURL($match[3], false, ['addr']);
 		if (empty($contact['addr'])) {
@@ -2164,7 +2213,7 @@ class BBCode
 	 * @return string
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function toMarkdown($text, $for_diaspora = true)
+	public static function toMarkdown(string $text, bool $for_diaspora = true): string
 	{
 		DI::profiler()->startRecording('rendering');
 		$original_text = $text;
@@ -2201,7 +2250,7 @@ class BBCode
 						$tagline .= '#' . $tag . ' ';
 					}
 				}
-				$text = $text . " " . $tagline;
+				$text = $text . ' ' . $tagline;
 			}
 		} else {
 			$text = self::convert($text, false, self::CONNECTORS);
@@ -2246,10 +2295,9 @@ class BBCode
 	 * Returns array of tags found, or empty array.
 	 *
 	 * @param string $string Post content
-	 *
 	 * @return array List of tag and person names
 	 */
-	public static function getTags($string)
+	public static function getTags(string $string): array
 	{
 		DI::profiler()->startRecording('rendering');
 		$ret = [];
@@ -2309,13 +2357,13 @@ class BBCode
 	/**
 	 * Expand tags to URLs, checks the tag is at the start of a line or preceded by a non-word character
 	 *
-	 * @param string $body
+	 * @param string $body HTML/BBCode
 	 * @return string body with expanded tags
 	 */
-	public static function expandTags(string $body)
+	public static function expandTags(string $body): string
 	{
 		return preg_replace_callback("/(?<=\W|^)([!#@])([^\^ \x0D\x0A,;:?'\"]*[^\^ \x0D\x0A,;:?!'\".])/",
-			function ($match) {
+			function (array $match) {
 				switch ($match[1]) {
 					case '!':
 					case '@':
@@ -2326,6 +2374,7 @@ class BBCode
 							return $match[1] . $match[2];
 						}
 						break;
+
 					case '#':
 					default:
 						return $match[1] . '[url=' . DI::baseUrl() . '/search?tag=' . $match[2] . ']' . $match[2] . '[/url]';
@@ -2336,7 +2385,7 @@ class BBCode
 	/**
 	 * Perform a custom function on a text after having escaped blocks enclosed in the provided tag list.
 	 *
-	 * @param string   $text
+	 * @param string   $text HTML/BBCode
 	 * @param array    $tagList A list of tag names, e.g ['noparse', 'nobb', 'pre']
 	 * @param callable $callback
 	 * @return string
@@ -2352,14 +2401,14 @@ class BBCode
 	/**
 	 * Replaces mentions in the provided message body in BBCode links for the provided user and network if any
 	 *
-	 * @param $body
+	 * @param string $body HTML/BBCode
-	 * @param $profile_uid
+	 * @param int $profile_uid Profile user id
-	 * @param $network
+	 * @param string $network Network name
-	 * @return string
+	 * @return string HTML/BBCode with inserted images
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 * @throws \ImagickException
 	 */
-	public static function setMentions($body, $profile_uid = 0, $network = '')
+	public static function setMentions(string $body, $profile_uid = 0, $network = '')
 	{
 		DI::profiler()->startRecording('rendering');
 		$body = self::performWithEscapedTags($body, ['noparse', 'pre', 'code', 'img'], function ($body) use ($profile_uid, $network) {
@@ -2406,7 +2455,7 @@ class BBCode
 	 * @return string
 	 * @TODO Rewrite to handle over whole record array
 	 */
-	public static function getShareOpeningTag(string $author, string $profile, string $avatar, string $link, string $posted, string $guid = null)
+	public static function getShareOpeningTag(string $author, string $profile, string $avatar, string $link, string $posted, string $guid = null): string
 	{
 		DI::profiler()->startRecording('rendering');
 		$header = "[share author='" . str_replace(["'", "[", "]"], ["&#x27;", "&#x5B;", "&#x5D;"], $author) .
@@ -2439,7 +2488,6 @@ class BBCode
 	 * @return string
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 * @see ParseUrl::getSiteinfoCached
-	 *
 	 */
 	public static function embedURL(string $url, bool $tryAttachment = true, string $title = null, string $description = null, string $tags = null): string
 	{

src/Content/Text/HTML.php

@@ -61,7 +61,7 @@ class HTML
 	 *                                    inner value from an attribute value and disregard the tag children.
 	 * @return bool Whether a replacement was done
 	 */
-	private static function tagToBBCodeSub(DOMDocument $doc, string $tag, array $attributes, string $startbb, string $endbb, bool $ignoreChildren = false)
+	private static function tagToBBCodeSub(DOMDocument $doc, string $tag, array $attributes, string $startbb, string $endbb, bool $ignoreChildren = false): bool
 	{
 		$savestart = str_replace('$', '\x01', $startbb);
 		$replace = false;
@@ -141,8 +141,16 @@ class HTML
 	 * @return string
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function toBBCode($message, $basepath = '')
+	public static function toBBCode(string $message, string $basepath = ''): string
 	{
+		/*
+		 * Check if message is empty to prevent a lot code below being executed
+		 * for just an empty message.
+		 */
+		if (empty($message)) {
+			return '';
+		}
+
 		DI::profiler()->startRecording('rendering');
 		$message = str_replace("\r", "", $message);
 
@@ -409,7 +417,7 @@ class HTML
 	 *
 	 * @return string The expanded URL
 	 */
-	private static function qualifyURLsSub($matches, $basepath)
+	private static function qualifyURLsSub(array $matches, string $basepath): string
 	{
 		$base = parse_url($basepath);
 		unset($base['query']);
@@ -436,7 +444,7 @@ class HTML
 	 *
 	 * @return string Body with expanded URLs
 	 */
-	private static function qualifyURLs($body, $basepath)
+	private static function qualifyURLs(string $body, string $basepath): string
 	{
 		$URLSearchString = "^\[\]";
 
@@ -462,7 +470,7 @@ class HTML
 		return $body;
 	}
 
-	private static function breakLines($line, $level, $wraplength = 75)
+	private static function breakLines(string $line, int $level, int $wraplength = 75): string
 	{
 		if ($wraplength == 0) {
 			$wraplength = 2000000;
@@ -503,7 +511,7 @@ class HTML
 		return implode("\n", $newlines);
 	}
 
-	private static function quoteLevel($message, $wraplength = 75)
+	private static function quoteLevel(string $message, int $wraplength = 75): string
 	{
 		$lines = explode("\n", $message);
 
@@ -539,7 +547,7 @@ class HTML
 		return implode("\n", $newlines);
 	}
 
-	private static function collectURLs($message)
+	private static function collectURLs(string $message): array
 	{
 		$pattern = '/<a.*?href="(.*?)".*?>(.*?)<\/a>/is';
 		preg_match_all($pattern, $message, $result, PREG_SET_ORDER);
@@ -585,7 +593,7 @@ class HTML
 	 * @param bool   $compact    True: Completely strips image tags; False: Keeps image URLs
 	 * @return string
 	 */
-	public static function toPlaintext(string $html, $wraplength = 75, $compact = false)
+	public static function toPlaintext(string $html, int $wraplength = 75, bool $compact = false): string
 	{
 		DI::profiler()->startRecording('rendering');
 		$message = str_replace("\r", "", $html);
@@ -705,7 +713,7 @@ class HTML
 	 * @param string $html
 	 * @return string
 	 */
-	public static function toMarkdown($html)
+	public static function toMarkdown(string $html): string
 	{
 		DI::profiler()->startRecording('rendering');
 		$converter = new HtmlConverter(['hard_break' => true]);
@@ -721,7 +729,7 @@ class HTML
 	 * @param string $s
 	 * @return string
 	 */
-	public static function toBBCodeVideo($s)
+	public static function toBBCodeVideo(string $s): string
 	{
 		$s = preg_replace(
 			'#<object[^>]+>(.*?)https?://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+)(.*?)</object>#ism',
@@ -751,7 +759,7 @@ class HTML
 	 * @param string $base base url
 	 * @return string
 	 */
-	public static function relToAbs($text, $base)
+	public static function relToAbs(string $text, string $base): string
 	{
 		if (empty($base)) {
 			return $text;
@@ -790,7 +798,7 @@ class HTML
 	 * @return string html for loader
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function scrollLoader()
+	public static function scrollLoader(): string
 	{
 		$tpl = Renderer::getMarkupTemplate("scroll_loader.tpl");
 		return Renderer::replaceMacros($tpl, [
@@ -819,7 +827,7 @@ class HTML
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 * @throws \ImagickException
 	 */
-	public static function micropro($contact, $redirect = false, $class = '', $textmode = false)
+	public static function micropro(array $contact, bool $redirect = false, string $class = '', bool $textmode = false): string
 	{
 		// Use the contact URL if no address is available
 		if (empty($contact['addr'])) {
@@ -859,13 +867,12 @@ class HTML
 	 *
 	 * @param string $s     Search query.
 	 * @param string $id    HTML id
-	 * @param string $url   Search url.
 	 * @param bool   $aside Display the search widgit aside.
 	 *
 	 * @return string Formatted HTML.
 	 * @throws \Exception
 	 */
-	public static function search($s, $id = 'search-box', $aside = true)
+	public static function search(string $s, string $id = 'search-box', bool $aside = true): string
 	{
 		$mode = 'text';
 
@@ -906,7 +913,7 @@ class HTML
 	 * @param string $s
 	 * @return string
 	 */
-	public static function toLink($s)
+	public static function toLink(string $s): string
 	{
 		$s = preg_replace("/(https?\:\/\/[a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\'\%\$\!\+]*)/", ' <a href="$1" target="_blank" rel="noopener noreferrer">$1</a>', $s);
 		$s = preg_replace("/\<(.*?)(src|href)=(.*?)\&amp\;(.*?)\>/ism", '<$1$2=$3&$4>', $s);
@@ -923,7 +930,7 @@ class HTML
 	 * @return string
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function applyContentFilter($html, array $reasons)
+	public static function applyContentFilter(string $html, array $reasons): string
 	{
 		if (count($reasons)) {
 			$tpl = Renderer::getMarkupTemplate('wall/content_filter.tpl');
@@ -943,7 +950,7 @@ class HTML
 	 * @param string $s
 	 * @return string
 	 */
-	public static function unamp($s)
+	public static function unamp(string $s): string
 	{
 		return str_replace('&amp;', '&', $s);
 	}

src/Content/Widget.php

@@ -45,7 +45,7 @@ class Widget
 	 * @return string
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function follow($value = "")
+	public static function follow(string $value = ''): string
 	{
 		return Renderer::replaceMacros(Renderer::getMarkupTemplate('widget/follow.tpl'), array(
 			'$connect' => DI::l10n()->t('Add New Contact'),
@@ -58,8 +58,10 @@ class Widget
 
 	/**
 	 * Return Find People widget
+	 *
+	 * @return string HTML code respresenting "People Widget"
 	 */
-	public static function findPeople()
+	public static function findPeople(): string
 	{
 		$global_dir = Search::getGlobalDirectory();
 
@@ -97,7 +99,7 @@ class Widget
 	 *
 	 * @return array Unsupported networks
 	 */
-	public static function unavailableNetworks()
+	public static function unavailableNetworks(): array
 	{
 		// Always hide content from these networks
 		$networks = [Protocol::PHANTOM, Protocol::FACEBOOK, Protocol::APPNET, Protocol::ZOT];
@@ -154,7 +156,7 @@ class Widget
 	 * @return string
 	 * @throws \Exception
 	 */
-	private static function filter($type, $title, $desc, $all, $baseUrl, array $options, $selected = null)
+	private static function filter(string $type, string $title, string $desc, string $all, string $baseUrl, array $options, string $selected = null): string
 	{
 		$queryString = parse_url($baseUrl, PHP_URL_QUERY);
 		$queryArray = [];
@@ -191,7 +193,7 @@ class Widget
 	 * @return string
 	 * @throws \Exception
 	 */
-	public static function groups($baseurl, $selected = '')
+	public static function groups(string $baseurl, string $selected = ''): string
 	{
 		if (!local_user()) {
 			return '';
@@ -223,7 +225,7 @@ class Widget
 	 * @return string
 	 * @throws \Exception
 	 */
-	public static function contactRels($baseurl, $selected = '')
+	public static function contactRels(string $baseurl, string $selected = ''): string
 	{
 		if (!local_user()) {
 			return '';
@@ -254,7 +256,7 @@ class Widget
 	 * @return string
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function networks($baseurl, $selected = '')
+	public static function networks(string $baseurl, string $selected = ''): string
 	{
 		if (!local_user()) {
 			return '';
@@ -292,10 +294,10 @@ class Widget
 	 *
 	 * @param string $baseurl  baseurl
 	 * @param string $selected optional, default empty
-	 * @return string|void
+	 * @return string
 	 * @throws \Exception
 	 */
-	public static function fileAs($baseurl, $selected = '')
+	public static function fileAs(string $baseurl, string $selected = ''): string
 	{
 		if (!local_user()) {
 			return '';
@@ -323,10 +325,10 @@ class Widget
 	 * @param int    $uid      Id of the user owning the categories
 	 * @param string $baseurl  Base page URL
 	 * @param string $selected Selected category
-	 * @return string|void
+	 * @return string
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function categories(int $uid, string $baseurl, string $selected = '')
+	public static function categories(int $uid, string $baseurl, string $selected = ''): string
 	{
 		if (!Feature::isEnabled($uid, 'categories')) {
 			return '';
@@ -353,11 +355,11 @@ class Widget
 	 *
 	 * @param int    $uid      Viewed profile user ID
 	 * @param string $nickname Viewed profile user nickname
-	 * @return string|void
+	 * @return string
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 * @throws \ImagickException
 	 */
-	public static function commonFriendsVisitor(int $uid, string $nickname)
+	public static function commonFriendsVisitor(int $uid, string $nickname): string
 	{
 		if (local_user() == $uid) {
 			return '';
@@ -414,7 +416,7 @@ class Widget
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 * @throws \ImagickException
 	 */
-	public static function tagCloud(int $uid, int $limit = 50)
+	public static function tagCloud(int $uid, int $limit = 50): string
 	{
 		if (empty($uid)) {
 			return '';
@@ -439,7 +441,7 @@ class Widget
 	 * @return string
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function postedByYear(string $url, int $uid, bool $wall)
+	public static function postedByYear(string $url, int $uid, bool $wall): string
 	{
 		$o = '';
 
@@ -510,10 +512,10 @@ class Widget
 	 * The account type value is added as a parameter to the url
 	 *
 	 * @param string $base        Basepath
-	 * @param int    $accounttype Acount type
+	 * @param string $accounttype Account type
 	 * @return string
 	 */
-	public static function accounttypes(string $base, $accounttype)
+	public static function accountTypes(string $base, string $accounttype): string
 	{
 		$accounts = [
 			['ref' => 'person', 'name' => DI::l10n()->t('Persons')],

src/Core/Addon.php

@@ -124,7 +124,7 @@ class Addon
 	 * @return void
 	 * @throws \Exception
 	 */
-	public static function uninstall($addon)
+	public static function uninstall(string $addon)
 	{
 		$addon = Strings::sanitizeFilePathItem($addon);
 
@@ -149,7 +149,7 @@ class Addon
 	 * @return bool
 	 * @throws \Exception
 	 */
-	public static function install($addon)
+	public static function install(string $addon): bool
 	{
 		$addon = Strings::sanitizeFilePathItem($addon);
 
@@ -185,6 +185,8 @@ class Addon
 
 	/**
 	 * reload all updated addons
+	 *
+	 * @return void
 	 */
 	public static function reload()
 	{
@@ -222,7 +224,7 @@ class Addon
 	 * @return array with the addon information
 	 * @throws \Exception
 	 */
-	public static function getInfo($addon)
+	public static function getInfo(string $addon): array
 	{
 		$addon = Strings::sanitizeFilePathItem($addon);
 
@@ -287,7 +289,7 @@ class Addon
 	 * @param string $addon
 	 * @return boolean
 	 */
-	public static function isEnabled($addon)
+	public static function isEnabled(string $addon): bool
 	{
 		return in_array($addon, self::$addons);
 	}
@@ -297,7 +299,7 @@ class Addon
 	 *
 	 * @return array
 	 */
-	public static function getEnabledList()
+	public static function getEnabledList(): array
 	{
 		return self::$addons;
 	}
@@ -308,7 +310,7 @@ class Addon
 	 * @return array
 	 * @throws \Exception
 	 */
-	public static function getVisibleList()
+	public static function getVisibleList(): array
 	{
 		$visible_addons = [];
 		$stmt = DBA::select('addon', ['name'], ['hidden' => false, 'installed' => true]);

src/Core/Cache/Type/MemcacheCache.php

@@ -68,6 +68,17 @@ class MemcacheCache extends AbstractCache implements ICanCacheInMemory
 		}
 	}
 
+	/**
+	 * Memcache doesn't allow spaces in keys
+	 *
+	 * @param string $key
+	 * @return string
+	 */
+	protected function getCacheKey(string $key): string
+	{
+		return str_replace(' ', '_', parent::getCacheKey($key));
+	}
+
 	/**
 	 * (@inheritdoc)
 	 */

src/Core/Cache/Type/MemcachedCache.php

@@ -93,6 +93,17 @@ class MemcachedCache extends AbstractCache implements ICanCacheInMemory
 		}
 	}
 
+	/**
+	 * Memcached doesn't allow spaces in keys
+	 *
+	 * @param string $key
+	 * @return string
+	 */
+	protected function getCacheKey(string $key): string
+	{
+		return str_replace(' ', '_', parent::getCacheKey($key));
+	}
+
 	/**
 	 * (@inheritdoc)
 	 */

src/Core/Console.php

@@ -121,7 +121,7 @@ HELP;
 		$this->dice = $dice;
 	}
 
-	protected function doExecute()
+	protected function doExecute(): int
 	{
 		if ($this->getOption('v')) {
 			$this->out('Executable: ' . $this->executable);

src/Core/Hook.php

@@ -49,6 +49,8 @@ class Hook
 
 	/**
 	 * Load hooks
+	 *
+	 * @return void
 	 */
 	public static function loadHooks()
 	{
@@ -69,8 +71,9 @@ class Hook
 	 * @param string $hook
 	 * @param string $file
 	 * @param string $function
+	 * @return void
 	 */
-	public static function add($hook, $file, $function)
+	public static function add(string $hook, string $file, string $function)
 	{
 		if (!array_key_exists($hook, self::$hooks)) {
 			self::$hooks[$hook] = [];
@@ -90,7 +93,7 @@ class Hook
 	 * @return mixed|bool
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function register($hook, $file, $function, $priority = 0)
+	public static function register(string $hook, string $file, string $function, int $priority = 0)
 	{
 		$file = str_replace(DI::app()->getBasePath() . DIRECTORY_SEPARATOR, '', $file);
 
@@ -111,7 +114,7 @@ class Hook
 	 * @return boolean
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function unregister($hook, $file, $function)
+	public static function unregister(string $hook, string $file, string $function): bool
 	{
 		$relative_file = str_replace(DI::app()->getBasePath() . DIRECTORY_SEPARATOR, '', $file);
 
@@ -120,8 +123,8 @@ class Hook
 		self::delete($condition);
 
 		$condition = ['hook' => $hook, 'file' => $relative_file, 'function' => $function];
-		$result = self::delete($condition);
+
-		return $result;
+		return self::delete($condition);
 	}
 
 	/**
@@ -130,7 +133,7 @@ class Hook
 	 * @param  string $name Name of the hook
 	 * @return array
 	 */
-	public static function getByName($name)
+	public static function getByName(string $name): array
 	{
 		$return = [];
 
@@ -149,9 +152,10 @@ class Hook
 	 * @param integer $priority of the hook
 	 * @param string  $name     of the hook to call
 	 * @param mixed   $data     to transmit to the callback handler
+	 * @return void
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function fork($priority, $name, $data = null)
+	public static function fork(int $priority, string $name, $data = null)
 	{
 		if (array_key_exists($name, self::$hooks)) {
 			foreach (self::$hooks[$name] as $hook) {
@@ -184,9 +188,10 @@ class Hook
 	 *
 	 * @param string        $name of the hook to call
 	 * @param string|array &$data to transmit to the callback handler
+	 * @return void
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function callAll($name, &$data = null)
+	public static function callAll(string $name, &$data = null)
 	{
 		if (array_key_exists($name, self::$hooks)) {
 			foreach (self::$hooks[$name] as $hook) {
@@ -202,9 +207,10 @@ class Hook
 	 * @param string          $name of the hook to call
 	 * @param array           $hook Hook data
 	 * @param string|array   &$data to transmit to the callback handler
+	 * @return void
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function callSingle(App $a, $name, $hook, &$data = null)
+	public static function callSingle(App $a, string $name, array $hook, &$data = null)
 	{
 		// Don't run a theme's hook if the user isn't using the theme
 		if (strpos($hook[0], 'view/theme/') !== false && strpos($hook[0], 'view/theme/' . $a->getCurrentTheme()) === false) {
@@ -229,7 +235,7 @@ class Hook
 	 * @param string $name Name of the addon
 	 * @return boolean
 	 */
-	public static function isAddonApp($name)
+	public static function isAddonApp(string $name): bool
 	{
 		$name = Strings::sanitizeFilePathItem($name);
 
@@ -253,7 +259,7 @@ class Hook
 	 * @return bool
 	 * @throws \Exception
 	 */
-	public static function delete(array $condition)
+	public static function delete(array $condition): bool
 	{
 		$result = DBA::delete('hook', $condition);
 
@@ -273,7 +279,7 @@ class Hook
 	 * @return bool
 	 * @throws \Exception
 	 */
-	private static function insert(array $condition)
+	private static function insert(array $condition): bool
 	{
 		$result = DBA::insert('hook', $condition);
 

src/Core/Installer.php

@@ -189,14 +189,12 @@ class Installer
 	/***
 	 * Installs the DB-Scheme for Friendica
 	 *
-	 * @param string $basePath The base path of this application
-	 *
 	 * @return bool true if the installation was successful, otherwise false
 	 * @throws Exception
 	 */
-	public function installDatabase($basePath)
+	public function installDatabase(): bool
 	{
-		$result = DBStructure::install($basePath);
+		$result = DBStructure::install();
 
 		if ($result) {
 			$txt = DI::l10n()->t('You may need to import the file "database.sql" manually using phpmyadmin or mysql.') . EOL;
@@ -656,7 +654,7 @@ class Installer
 	 * @return bool true if the check was successful, otherwise false
 	 * @throws Exception
 	 */
-	public function checkDB(Database $dba)
+	public function checkDB(Database $dba): bool
 	{
 		$dba->reconnect();
 

src/Core/L10n.php

@@ -128,7 +128,7 @@ class L10n
 	private function setLangFromSession(IHandleSessions $session)
 	{
 		if ($session->get('language') !== $this->lang) {
-			$this->loadTranslationTable($session->get('language'));
+			$this->loadTranslationTable($session->get('language') ?? $this->lang);
 		}
 	}
 
@@ -140,10 +140,10 @@ class L10n
 	 * Uses an App object shim since all the strings files refer to $a->strings
 	 *
 	 * @param string $lang language code to load
-	 *
+	 * @return void
 	 * @throws \Exception
 	 */
-	private function loadTranslationTable($lang)
+	private function loadTranslationTable(string $lang)
 	{
 		$lang = Strings::sanitizeFilePathItem($lang);
 
@@ -183,7 +183,7 @@ class L10n
 	 *
 	 * @return string The two-letter language code
 	 */
-	public static function detectLanguage(array $server, array $get, string $sysLang = self::DEFAULT)
+	public static function detectLanguage(array $server, array $get, string $sysLang = self::DEFAULT): string
 	{
 		$lang_variable = $server['HTTP_ACCEPT_LANGUAGE'] ?? null;
 
@@ -269,7 +269,7 @@ class L10n
 	 *
 	 * @return string
 	 */
-	public function t($s, ...$vars)
+	public function t(string $s, ...$vars): string
 	{
 		if (empty($s)) {
 			return '';
@@ -307,7 +307,7 @@ class L10n
 	 * @return string
 	 * @throws \Exception
 	 */
-	public function tt(string $singular, string $plural, int $count)
+	public function tt(string $singular, string $plural, int $count): string
 	{
 		$s = null;
 
@@ -352,7 +352,7 @@ class L10n
 	 *
 	 * @return bool
 	 */
-	private function stringPluralSelectDefault($n)
+	private function stringPluralSelectDefault(int $n): bool
 	{
 		return $n != 1;
 	}
@@ -369,7 +369,7 @@ class L10n
 	 *
 	 * @return array
 	 */
-	public static function getAvailableLanguages()
+	public static function getAvailableLanguages(): array
 	{
 		$langs              = [];
 		$strings_file_paths = glob('view/lang/*/strings.php');
@@ -391,10 +391,9 @@ class L10n
 	 * Translate days and months names.
 	 *
 	 * @param string $s String with day or month name.
-	 *
 	 * @return string Translated string.
 	 */
-	public function getDay($s)
+	public function getDay(string $s): string
 	{
 		$ret = str_replace(['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday'],
 			[$this->t('Monday'), $this->t('Tuesday'), $this->t('Wednesday'), $this->t('Thursday'), $this->t('Friday'), $this->t('Saturday'), $this->t('Sunday')],
@@ -411,10 +410,9 @@ class L10n
 	 * Translate short days and months names.
 	 *
 	 * @param string $s String with short day or month name.
-	 *
 	 * @return string Translated string.
 	 */
-	public function getDayShort($s)
+	public function getDayShort(string $s): string
 	{
 		$ret = str_replace(['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'],
 			[$this->t('Mon'), $this->t('Tue'), $this->t('Wed'), $this->t('Thu'), $this->t('Fri'), $this->t('Sat'), $this->t('Sun')],
@@ -435,7 +433,7 @@ class L10n
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 * @hook poke_verbs pokes array
 	 */
-	public function getPokeVerbs()
+	public function getPokeVerbs(): array
 	{
 		// index is present tense verb
 		// value is array containing past tense verb, translation of present, translation of past
@@ -461,7 +459,7 @@ class L10n
 	 * @return static A new L10n instance
 	 * @throws \Exception
 	 */
-	public function withLang(string $lang)
+	public function withLang(string $lang): L10n
 	{
 		// Don't create a new instance for same language
 		if ($lang === $this->lang) {

src/Core/Logger.php

@@ -47,7 +47,7 @@ class Logger
 	/**
 	 * @return LoggerInterface
 	 */
-	private static function getWorker()
+	private static function getInstance()
 	{
 		if (self::$type === self::TYPE_LOGGER) {
 			return DI::logger();
@@ -66,7 +66,7 @@ class Logger
 	public static function enableWorker(string $functionName)
 	{
 		self::$type = self::TYPE_WORKER;
-		self::getWorker()->setFunctionName($functionName);
+		self::getInstance()->setFunctionName($functionName);
 	}
 
 	/**
@@ -82,15 +82,14 @@ class Logger
 	 *
 	 * @see LoggerInterface::emergency()
 	 *
-	 * @param string $message
+	 * @param string $message Message to log
-	 * @param array  $context
+	 * @param array  $context Optional variables
-	 *
 	 * @return void
 	 * @throws \Exception
 	 */
-	public static function emergency($message, $context = [])
+	public static function emergency(string $message, array $context = [])
 	{
-		self::getWorker()->emergency($message, $context);
+		self::getInstance()->emergency($message, $context);
 	}
 
 	/**
@@ -100,15 +99,14 @@ class Logger
 	 * Example: Entire website down, database unavailable, etc. This should
 	 * trigger the SMS alerts and wake you up.
 	 *
-	 * @param string $message
+	 * @param string $message Message to log
-	 * @param array  $context
+	 * @param array  $context Optional variables
-	 *
 	 * @return void
 	 * @throws \Exception
 	 */
-	public static function alert($message, $context = [])
+	public static function alert(string $message, array $context = [])
 	{
-		self::getWorker()->alert($message, $context);
+		self::getInstance()->alert($message, $context);
 	}
 
 	/**
@@ -117,15 +115,14 @@ class Logger
 	 *
 	 * Example: Application component unavailable, unexpected exception.
 	 *
-	 * @param string $message
+	 * @param string $message Message to log
-	 * @param array  $context
+	 * @param array  $context Optional variables
-	 *
 	 * @return void
 	 * @throws \Exception
 	 */
-	public static function critical($message, $context = [])
+	public static function critical(string $message, array $context = [])
 	{
-		self::getWorker()->critical($message, $context);
+		self::getInstance()->critical($message, $context);
 	}
 
 	/**
@@ -133,15 +130,14 @@ class Logger
 	 * be logged and monitored.
 	 * @see LoggerInterface::error()
 	 *
-	 * @param string $message
+	 * @param string $message Message to log
-	 * @param array  $context
+	 * @param array  $context Optional variables
-	 *
 	 * @return void
 	 * @throws \Exception
 	 */
-	public static function error($message, $context = [])
+	public static function error(string $message, array $context = [])
 	{
-		self::getWorker()->error($message, $context);
+		self::getInstance()->error($message, $context);
 	}
 
 	/**
@@ -151,30 +147,28 @@ class Logger
 	 * Example: Use of deprecated APIs, poor use of an API, undesirable things
 	 * that are not necessarily wrong.
 	 *
-	 * @param string $message
+	 * @param string $message Message to log
-	 * @param array  $context
+	 * @param array  $context Optional variables
-	 *
 	 * @return void
 	 * @throws \Exception
 	 */
-	public static function warning($message, $context = [])
+	public static function warning(string $message, array $context = [])
 	{
-		self::getWorker()->warning($message, $context);
+		self::getInstance()->warning($message, $context);
 	}
 
 	/**
 	 * Normal but significant events.
 	 * @see LoggerInterface::notice()
 	 *
-	 * @param string $message
+	 * @param string $message Message to log
-	 * @param array  $context
+	 * @param array  $context Optional variables
-	 *
 	 * @return void
 	 * @throws \Exception
 	 */
-	public static function notice($message, $context = [])
+	public static function notice(string $message, array $context = [])
 	{
-		self::getWorker()->notice($message, $context);
+		self::getInstance()->notice($message, $context);
 	}
 
 	/**
@@ -189,24 +183,23 @@ class Logger
 	 * @return void
 	 * @throws \Exception
 	 */
-	public static function info($message, $context = [])
+	public static function info(string $message, array $context = [])
 	{
-		self::getWorker()->info($message, $context);
+		self::getInstance()->info($message, $context);
 	}
 
 	/**
 	 * Detailed debug information.
 	 * @see LoggerInterface::debug()
 	 *
-	 * @param string $message
+	 * @param string $message Message to log
-	 * @param array  $context
+	 * @param array  $context Optional variables
-	 *
 	 * @return void
 	 * @throws \Exception
 	 */
-	public static function debug($message, $context = [])
+	public static function debug(string $message, array $context = [])
 	{
-		self::getWorker()->debug($message, $context);
+		self::getInstance()->debug($message, $context);
 	}
 
 	/**
@@ -216,12 +209,13 @@ class Logger
 	 * to isolate particular elements they are targetting
 	 * personally without background noise
 	 *
-	 * @param string $msg
+	 * @param string $message Message to log
-	 * @param string $level
+	 * @param string $level Logging level
+	 * @return void
 	 * @throws \Exception
 	 */
-	public static function devLog($msg, $level = LogLevel::DEBUG)
+	public static function devLog(string $message, string $level = LogLevel::DEBUG)
 	{
-		DI::devLogger()->log($level, $msg);
+		DI::devLogger()->log($level, $message);
 	}
 }

src/Core/Logger/Type/Monolog/DevelopHandler.php

@@ -21,6 +21,7 @@
 
 namespace Friendica\Core\Logger\Type\Monolog;
 
+use Friendica\App\Request;
 use Monolog\Handler;
 use Monolog\Logger;
 
@@ -38,15 +39,22 @@ class DevelopHandler extends Handler\AbstractHandler
 	private $developerIp;
 
 	/**
+	 * @var string The IP of the current request
+	 */
+	private $remoteAddress;
+
+	/**
+	 * @param Request $request     The current http request
 	 * @param string  $developerIp The IP of the developer who wants to debug
 	 * @param int     $level       The minimum logging level at which this handler will be triggered
 	 * @param bool    $bubble      Whether the messages that are handled can bubble up the stack or not
 	 */
-	public function __construct($developerIp, $level = Logger::DEBUG, bool $bubble = true)
+	public function __construct(Request $request, $developerIp, int $level = Logger::DEBUG, bool $bubble = true)
 	{
 		parent::__construct($level, $bubble);
 
 		$this->developerIp   = $developerIp;
+		$this->remoteAddress = $request->getRemoteAddress();
 	}
 
 	/**
@@ -59,7 +67,7 @@ class DevelopHandler extends Handler\AbstractHandler
 		}
 
 		/// Just in case the remote IP is the same as the developer IP log the output
-		if (!is_null($this->developerIp) && $_SERVER['REMOTE_ADDR'] != $this->developerIp) {
+		if (!is_null($this->developerIp) && $this->remoteAddress != $this->developerIp) {
 			return false;
 		}
 

src/Core/Renderer.php

@@ -71,7 +71,7 @@ class Renderer
 	 * @return string
 	 * @throws ServiceUnavailableException
 	 */
-	public static function replaceMacros(string $template, array $vars = [])
+	public static function replaceMacros(string $template, array $vars = []): string
 	{
 		DI::profiler()->startRecording('rendering');
 

src/Core/System.php

@@ -441,6 +441,12 @@ class System
 	 *
 	 * @param string $url  The new Location to redirect
 	 * @param int    $code The redirection code, which is used (Default is 302)
+	 *
+	 * @throws FoundException
+	 * @throws MovedPermanentlyException
+	 * @throws TemporaryRedirectException
+	 *
+	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
 	public static function externalRedirect($url, $code = 302)
 	{

src/Core/Theme.php

@@ -32,7 +32,7 @@ require_once 'boot.php';
  */
 class Theme
 {
-	public static function getAllowedList()
+	public static function getAllowedList(): array
 	{
 		$allowed_themes_str = DI::config()->get('system', 'allowed_themes');
 		$allowed_themes_raw = explode(',', str_replace(' ', '', $allowed_themes_str));
@@ -69,7 +69,7 @@ class Theme
 	 * @param string $theme the name of the theme
 	 * @return array
 	 */
-	public static function getInfo($theme)
+	public static function getInfo(string $theme): array
 	{
 		$theme = Strings::sanitizeFilePathItem($theme);
 
@@ -133,7 +133,7 @@ class Theme
 	 * @return string
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function getScreenshot($theme)
+	public static function getScreenshot(string $theme): string
 	{
 		$theme = Strings::sanitizeFilePathItem($theme);
 
@@ -146,7 +146,13 @@ class Theme
 		return DI::baseUrl() . '/images/blank.png';
 	}
 
-	public static function uninstall($theme)
+	/**
+	 * Uninstalls given theme name
+	 *
+	 * @param string $theme Name of theme
+	 * @return bool true on success
+	 */
+	public static function uninstall(string $theme)
 	{
 		$theme = Strings::sanitizeFilePathItem($theme);
 
@@ -167,10 +173,18 @@ class Theme
 		if ($key !== false) {
 			unset($allowed_themes[$key]);
 			Theme::setAllowedList($allowed_themes);
+			return true;
 		}
+		return false;
 	}
 
-	public static function install($theme)
+	/**
+	 * Installs given theme name
+	 *
+	 * @param string $theme Name of theme
+	 * @return bool true on success
+	 */
+	public static function install(string $theme): bool
 	{
 		$theme = Strings::sanitizeFilePathItem($theme);
 
@@ -208,7 +222,7 @@ class Theme
 	 * @return string Path to the file or empty string if the file isn't found
 	 * @throws \Exception
 	 */
-	public static function getPathForFile($file)
+	public static function getPathForFile(string $file): string
 	{
 		$a = DI::app();
 
@@ -237,10 +251,9 @@ class Theme
 	 * Provide a sane default if nothing is chosen or the specified theme does not exist.
 	 *
 	 * @param string $theme Theme name
-	 *
 	 * @return string
 	 */
-	public static function getStylesheetPath($theme)
+	public static function getStylesheetPath(string $theme): string
 	{
 		$theme = Strings::sanitizeFilePathItem($theme);
 
@@ -263,10 +276,10 @@ class Theme
 	/**
 	 * Returns the path of the provided theme
 	 *
-	 * @param $theme
+	 * @param string $theme Theme name
 	 * @return string|null
 	 */
-	public static function getConfigFile($theme)
+	public static function getConfigFile(string $theme)
 	{
 		$theme = Strings::sanitizeFilePathItem($theme);
 
@@ -285,11 +298,11 @@ class Theme
 	/**
 	 * Returns the background color of the provided theme if available.
 	 *
-	 * @param string   $theme
+	 * @param string   $theme Theme name
 	 * @param int|null $uid   Current logged-in user id
 	 * @return string|null
 	 */
-	public static function getBackgroundColor(string $theme, $uid = null)
+	public static function getBackgroundColor(string $theme, int $uid = null)
 	{
 		$theme = Strings::sanitizeFilePathItem($theme);
 

src/Core/Update.php

@@ -41,7 +41,7 @@ class Update
 	 * @param string   $basePath   The base path of this application
 	 * @param boolean  $via_worker Is the check run via the worker?
 	 * @param App\Mode $mode       The current app mode
-	 *
+	 * @return void
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
 	public static function check(string $basePath, bool $via_worker, App\Mode $mode)
@@ -73,7 +73,7 @@ class Update
 		}
 
 		// The postupdate has to completed version 1288 for the new post views to take over
-		$postupdate = DI::config()->get("system", "post_update_version", NEW_TABLE_STRUCTURE_VERSION);
+		$postupdate = DI::config()->get('system', 'post_update_version', NEW_TABLE_STRUCTURE_VERSION);
 		if ($postupdate < NEW_TABLE_STRUCTURE_VERSION) {
 			$error = DI::l10n()->t('Updates from postupdate version %s are not supported. Please update at least to version 2021.01 and wait until the postupdate finished version 1383.', $postupdate);
 			if (DI::mode()->getExecutor() == Mode::INDEX) {
@@ -85,9 +85,11 @@ class Update
 
 		if ($build < DB_UPDATE_VERSION) {
 			if ($via_worker) {
-				// Calling the database update directly via the worker enables us to perform database changes to the workerqueue table itself.
+				/*
-				// This is a fallback, since normally the database update will be performed by a worker job.
+				 * Calling the database update directly via the worker enables us to perform database changes to the workerqueue table itself.
-				// This worker job doesn't work for changes to the "workerqueue" table itself.
+				 * This is a fallback, since normally the database update will be performed by a worker job.
+				 * This worker job doesn't work for changes to the "workerqueue" table itself.
+				 */
 				self::run($basePath);
 			} else {
 				Worker::add(PRIORITY_CRITICAL, 'DBUpdate');
@@ -103,11 +105,10 @@ class Update
 	 * @param bool   $override Overrides any running/stuck updates
 	 * @param bool   $verbose  Run the Update-Check verbose
 	 * @param bool   $sendMail Sends a Mail to the administrator in case of success/failure
-	 *
 	 * @return string Empty string if the update is successful, error messages otherwise
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function run(string $basePath, bool $force = false, bool $override = false, bool $verbose = false, bool $sendMail = true)
+	public static function run(string $basePath, bool $force = false, bool $override = false, bool $verbose = false, bool $sendMail = true): string
 	{
 		// In force mode, we release the dbupdate lock first
 		// Necessary in case of an stuck update
@@ -228,11 +229,10 @@ class Update
 	 * @param int    $version  the DB version number of the function
 	 * @param string $prefix   the prefix of the function (update, pre_update)
 	 * @param bool   $sendMail whether to send emails on success/failure
-
 	 * @return bool true, if the update function worked
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function runUpdateFunction(int $version, string $prefix, bool $sendMail = true)
+	public static function runUpdateFunction(int $version, string $prefix, bool $sendMail = true): bool
 	{
 		$funcname = $prefix . '_' . $version;
 
@@ -284,6 +284,7 @@ class Update
 	 *
 	 * @param int    $update_id     number of failed update
 	 * @param string $error_message error message
+	 * @return void
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
 	private static function updateFailed(int $update_id, string $error_message) {

src/Core/UserImport.php

@@ -86,7 +86,7 @@ class UserImport
 	 * @return array|bool
 	 * @throws \Exception
 	 */
-	private static function dbImportAssoc($table, $arr)
+	private static function dbImportAssoc(string $table, array $arr)
 	{
 		if (isset($arr['id'])) {
 			unset($arr['id']);
@@ -105,10 +105,11 @@ class UserImport
 	 * Import account file exported from mod/uexport
 	 *
 	 * @param array $file array from $_FILES
+	 * @return void
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 * @throws \ImagickException
 	 */
-	public static function importAccount($file)
+	public static function importAccount(array $file)
 	{
 		Logger::notice("Start user import from " . $file['tmp_name']);
 		/*

src/Core/Worker.php

@@ -60,7 +60,7 @@ class Worker
 	 * @return void
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function processQueue($run_cron, Process $process)
+	public static function processQueue(bool $run_cron, Process $process)
 	{
 		self::$up_start = microtime(true);
 
@@ -169,7 +169,7 @@ class Worker
 	 *
 	 * @return boolean
 	 */
-	public static function isReady()
+	public static function isReady(): bool
 	{
 		// Count active workers and compare them with a maximum value that depends on the load
 		if (self::tooMuchWorkers()) {
@@ -204,7 +204,7 @@ class Worker
 	 * @return boolean Returns "true" if tasks are existing
 	 * @throws \Exception
 	 */
-	public static function entriesExists()
+	public static function entriesExists(): bool
 	{
 		$stamp = (float)microtime(true);
 		$exists = DBA::exists('workerqueue', ["NOT `done` AND `pid` = 0 AND `next_try` < ?", DateTimeFormat::utcNow()]);
@@ -218,7 +218,7 @@ class Worker
 	 * @return integer Number of deferred entries in the worker queue
 	 * @throws \Exception
 	 */
-	private static function deferredEntries()
+	private static function deferredEntries(): int
 	{
 		$stamp = (float)microtime(true);
 		$count = DBA::count('workerqueue', ["NOT `done` AND `pid` = 0 AND `retrial` > ?", 0]);
@@ -233,7 +233,7 @@ class Worker
 	 * @return integer Number of non executed entries in the worker queue
 	 * @throws \Exception
 	 */
-	private static function totalEntries()
+	private static function totalEntries(): int
 	{
 		$stamp = (float)microtime(true);
 		$count = DBA::count('workerqueue', ['done' => false, 'pid' => 0]);
@@ -248,7 +248,7 @@ class Worker
 	 * @return integer Number of active worker processes
 	 * @throws \Exception
 	 */
-	private static function highestPriority()
+	private static function highestPriority(): int
 	{
 		$stamp = (float)microtime(true);
 		$condition = ["`pid` = 0 AND NOT `done` AND `next_try` < ?", DateTimeFormat::utcNow()];
@@ -269,7 +269,7 @@ class Worker
 	 * @return integer Is there a process running with that priority?
 	 * @throws \Exception
 	 */
-	private static function processWithPriorityActive($priority)
+	private static function processWithPriorityActive(int $priority): int
 	{
 		$condition = ["`priority` <= ? AND `pid` != 0 AND NOT `done`", $priority];
 		return DBA::exists('workerqueue', $condition);
@@ -281,7 +281,7 @@ class Worker
 	 * @param mixed $file
 	 * @return bool
 	 */
-	private static function validateInclude(&$file)
+	private static function validateInclude(&$file): bool
 	{
 		$orig_file = $file;
 
@@ -321,7 +321,7 @@ class Worker
 	 * @return boolean "true" if further processing should be stopped
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function execute($queue)
+	public static function execute(array $queue): bool
 	{
 		$mypid = getmypid();
 
@@ -454,7 +454,7 @@ class Worker
 	 * @return void
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	private static function execFunction($queue, $funcname, $argv, $method_call)
+	private static function execFunction(array $queue, string $funcname, array $argv, bool $method_call)
 	{
 		$a = DI::app();
 
@@ -543,7 +543,7 @@ class Worker
 	 * @return bool Are more than 3/4 of the maximum connections used?
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	private static function maxConnectionsReached()
+	private static function maxConnectionsReached(): bool
 	{
 		// Fetch the max value from the config. This is needed when the system cannot detect the correct value by itself.
 		$max = DI::config()->get("system", "max_connections");
@@ -627,7 +627,7 @@ class Worker
 	 * @return bool Are there too much workers running?
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	private static function tooMuchWorkers()
+	private static function tooMuchWorkers(): bool
 	{
 		$queues = DI::config()->get("system", "worker_queues", 10);
 
@@ -751,7 +751,7 @@ class Worker
 	 * @return integer Number of active worker processes
 	 * @throws \Exception
 	 */
-	private static function activeWorkers()
+	private static function activeWorkers(): int
 	{
 		$stamp = (float)microtime(true);
 		$count = DI::process()->countCommand('Worker.php');
@@ -766,7 +766,7 @@ class Worker
 	 * @return array List of worker process ids
 	 * @throws \Exception
 	 */
-	private static function getWorkerPIDList()
+	private static function getWorkerPIDList(): array
 	{
 		$ids = [];
 		$stamp = (float)microtime(true);
@@ -787,7 +787,7 @@ class Worker
 	/**
 	 * Returns waiting jobs for the current process id
 	 *
-	 * @return array waiting workerqueue jobs
+	 * @return array|bool waiting workerqueue jobs or FALSE on failture
 	 * @throws \Exception
 	 */
 	private static function getWaitingJobForPID()
@@ -809,7 +809,7 @@ class Worker
 	 * @return array array with next jobs
 	 * @throws \Exception
 	 */
-	private static function nextProcess(int $limit)
+	private static function nextProcess(int $limit): array
 	{
 		$priority = self::nextPriority();
 		if (empty($priority)) {
@@ -844,7 +844,7 @@ class Worker
 	/**
 	 * Returns the priority of the next workerqueue job
 	 *
-	 * @return string priority
+	 * @return string|bool priority or FALSE on failure
 	 * @throws \Exception
 	 */
 	private static function nextPriority()
@@ -915,7 +915,7 @@ class Worker
 	/**
 	 * Find and claim the next worker process for us
 	 *
-	 * @return boolean Have we found something?
+	 * @return void
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
 	private static function findWorkerProcesses()
@@ -993,7 +993,7 @@ class Worker
 	 * @return array worker processes
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function workerProcess()
+	public static function workerProcess(): array
 	{
 		// There can already be jobs for us in the queue.
 		$waiting = self::getWaitingJobForPID();
@@ -1003,7 +1003,7 @@ class Worker
 
 		$stamp = (float)microtime(true);
 		if (!DI::lock()->acquire(self::LOCK_PROCESS)) {
-			return false;
+			return [];
 		}
 		self::$lock_duration += (microtime(true) - $stamp);
 
@@ -1011,7 +1011,9 @@ class Worker
 
 		DI::lock()->release(self::LOCK_PROCESS);
 
-		return self::getWaitingJobForPID();
+		// Prevents "Return value of Friendica\Core\Worker::workerProcess() must be of the type array, bool returned"
+		$process = self::getWaitingJobForPID();
+		return (is_array($process) ? $process : []);
 	}
 
 	/**
@@ -1097,7 +1099,7 @@ class Worker
 	 * @return void
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
-	public static function spawnWorker($do_cron = false)
+	public static function spawnWorker(bool $do_cron = false)
 	{
 		if (Worker\Daemon::isMode() && DI::config()->get('system', 'worker_fork')) {
 			self::forkProcess($do_cron);
@@ -1231,7 +1233,7 @@ class Worker
 		return $added;
 	}
 
-	public static function countWorkersByCommand(string $command)
+	public static function countWorkersByCommand(string $command): int
 	{
 		return DBA::count('workerqueue', ['done' => false, 'pid' => 0, 'command' => $command]);
 	}
@@ -1244,7 +1246,7 @@ class Worker
 	 * @param integer $max_level maximum retrial level
 	 * @return integer the next retrial level value
 	 */
-	private static function getNextRetrial($queue, $max_level)
+	private static function getNextRetrial(array $queue, int $max_level): int
 	{
 		$created = strtotime($queue['created']);
 		$retrial_time = time() - $created;
@@ -1314,9 +1316,10 @@ class Worker
 	/**
 	 * Check if the system is inside the defined maintenance window
 	 *
+	 * @param bool $check_last_execution Whether check last execution
 	 * @return boolean
 	 */
-	public static function isInMaintenanceWindow(bool $check_last_execution = false)
+	public static function isInMaintenanceWindow(bool $check_last_execution = false): bool
 	{
 		// Calculate the seconds of the start end end of the maintenance window
 		$start = strtotime(DI::config()->get('system', 'maintenance_start')) % 86400;

src/DI.php

@@ -65,11 +65,27 @@ abstract class DI
 	/**
 	 * @return Database\Database
 	 */
-	public static function dba()
+	public static function dba(): Database\Database
 	{
 		return self::$dice->create(Database\Database::class);
 	}
 
+	/**
+	 * @return \Friendica\Database\Definition\DbaDefinition
+	 */
+	public static function dbaDefinition(): Database\Definition\DbaDefinition
+	{
+		return self::$dice->create(Database\Definition\DbaDefinition::class);
+	}
+
+	/**
+	 * @return \Friendica\Database\Definition\ViewDefinition
+	 */
+	public static function viewDefinition(): Database\Definition\ViewDefinition
+	{
+		return self::$dice->create(Database\Definition\ViewDefinition::class);
+	}
+
 	//
 	// "App" namespace instances
 	//

src/Database/DBA.php

@@ -42,7 +42,7 @@ class DBA
 	 */
 	const NULL_DATETIME = '0001-01-01 00:00:00';
 
-	public static function connect()
+	public static function connect(): bool
 	{
 		return DI::dba()->connect();
 	}
@@ -58,7 +58,7 @@ class DBA
 	/**
 	 * Perform a reconnect of an existing database connection
 	 */
-	public static function reconnect()
+	public static function reconnect(): bool
 	{
 		return DI::dba()->reconnect();
 	}
@@ -77,7 +77,7 @@ class DBA
 	 *
 	 * @return string with either "pdo" or "mysqli"
 	 */
-	public static function getDriver()
+	public static function getDriver(): string
 	{
 		return DI::dba()->getDriver();
 	}
@@ -90,7 +90,7 @@ class DBA
 	 *
 	 * @return string
 	 */
-	public static function serverInfo()
+	public static function serverInfo(): string
 	{
 		return DI::dba()->serverInfo();
 	}
@@ -101,7 +101,7 @@ class DBA
 	 * @return string
 	 * @throws \Exception
 	 */
-	public static function databaseName()
+	public static function databaseName(): string
 	{
 		return DI::dba()->databaseName();
 	}
@@ -112,7 +112,7 @@ class DBA
 	 * @param string $str
 	 * @return string escaped string
 	 */
-	public static function escape($str)
+	public static function escape(string $str): string
 	{
 		return DI::dba()->escape($str);
 	}
@@ -122,7 +122,7 @@ class DBA
 	 *
 	 * @return boolean is the database connected?
 	 */
-	public static function connected()
+	public static function connected(): bool
 	{
 		return DI::dba()->connected();
 	}
@@ -138,7 +138,7 @@ class DBA
 	 * @param string $sql An SQL string without the values
 	 * @return string The input SQL string modified if necessary.
 	 */
-	public static function anyValueFallback($sql)
+	public static function anyValueFallback(string $sql): string
 	{
 		return DI::dba()->anyValueFallback($sql);
 	}
@@ -152,7 +152,7 @@ class DBA
 	 * @param string $sql An SQL string without the values
 	 * @return string The input SQL string modified if necessary.
 	 */
-	public static function cleanQuery($sql)
+	public static function cleanQuery(string $sql): string
 	{
 		$search = ["\t", "\n", "\r", "  "];
 		$replace = [' ', ' ', ' ', ' '];
@@ -169,7 +169,7 @@ class DBA
 	 * @param array $args Parameter array
 	 * @return array universalized parameter array
 	 */
-	public static function getParam($args)
+	public static function getParam(array $args): array
 	{
 		unset($args[0]);
 
@@ -192,7 +192,7 @@ class DBA
 	 * @return bool|object statement object or result object
 	 * @throws \Exception
 	 */
-	public static function p($sql)
+	public static function p(string $sql)
 	{
 		$params = self::getParam(func_get_args());
 
@@ -208,8 +208,8 @@ class DBA
 	 * @return boolean Was the query successfull? False is returned only if an error occurred
 	 * @throws \Exception
 	 */
-	public static function e($sql) {
+	public static function e(string $sql): bool
-
+	{
 		$params = self::getParam(func_get_args());
 
 		return DI::dba()->e($sql, $params);
@@ -218,13 +218,12 @@ class DBA
 	/**
 	 * Check if data exists
 	 *
-	 * @param string|array $table     Table name or array [schema => table]
+	 * @param string $table     Table name in format schema.table (while scheme is optiona)
-	 * @param array        $condition array of fields for condition
+	 * @param array  $condition Array of fields for condition
-	 *
 	 * @return boolean Are there rows for that condition?
 	 * @throws \Exception
 	 */
-	public static function exists($table, $condition)
+	public static function exists(string $table, array $condition): bool
 	{
 		return DI::dba()->exists($table, $condition);
 	}
@@ -238,7 +237,7 @@ class DBA
 	 * @return array first row of query
 	 * @throws \Exception
 	 */
-	public static function fetchFirst($sql)
+	public static function fetchFirst(string $sql)
 	{
 		$params = self::getParam(func_get_args());
 
@@ -250,7 +249,7 @@ class DBA
 	 *
 	 * @return int Number of rows
 	 */
-	public static function affectedRows()
+	public static function affectedRows(): int
 	{
 		return DI::dba()->affectedRows();
 	}
@@ -261,7 +260,7 @@ class DBA
 	 * @param object Statement object
 	 * @return int Number of columns
 	 */
-	public static function columnCount($stmt)
+	public static function columnCount($stmt): int
 	{
 		return DI::dba()->columnCount($stmt);
 	}
@@ -271,7 +270,7 @@ class DBA
 	 * @param PDOStatement|mysqli_result|mysqli_stmt Statement object
 	 * @return int Number of rows
 	 */
-	public static function numRows($stmt)
+	public static function numRows($stmt): int
 	{
 		return DI::dba()->numRows($stmt);
 	}
@@ -290,14 +289,13 @@ class DBA
 	/**
 	 * Insert a row into a table
 	 *
-	 * @param string|array $table          Table name or array [schema => table]
+	 * @param string $table          Table name in format schema.table (while scheme is optiona)
 	 * @param array  $param          parameter array
 	 * @param int    $duplicate_mode What to do on a duplicated entry
-	 *
 	 * @return boolean was the insert successful?
 	 * @throws \Exception
 	 */
-	public static function insert($table, array $param, int $duplicate_mode = Database::INSERT_DEFAULT)
+	public static function insert(string $table, array $param, int $duplicate_mode = Database::INSERT_DEFAULT): bool
 	{
 		return DI::dba()->insert($table, $param, $duplicate_mode);
 	}
@@ -306,13 +304,12 @@ class DBA
 	 * Inserts a row with the provided data in the provided table.
 	 * If the data corresponds to an existing row through a UNIQUE or PRIMARY index constraints, it updates the row instead.
 	 *
-	 * @param string|array $table Table name or array [schema => table]
+	 * @param string $table Table name in format schema.table (while scheme is optiona)
 	 * @param array  $param parameter array
-	 *
 	 * @return boolean was the insert successful?
 	 * @throws \Exception
 	 */
-	public static function replace($table, $param)
+	public static function replace(string $table, array $param): bool
 	{
 		return DI::dba()->replace($table, $param);
 	}
@@ -322,7 +319,7 @@ class DBA
 	 *
 	 * @return integer Last inserted id
 	 */
-	public static function lastInsertId()
+	public static function lastInsertId(): int
 	{
 		return DI::dba()->lastInsertId();
 	}
@@ -332,12 +329,11 @@ class DBA
 	 *
 	 * This function can be extended in the future to accept a table array as well.
 	 *
-	 * @param string|array $table Table name or array [schema => table]
+	 * @param string $table Table name in format schema.table (while scheme is optiona)
-	 *
 	 * @return boolean was the lock successful?
 	 * @throws \Exception
 	 */
-	public static function lock($table)
+	public static function lock(string $table): bool
 	{
 		return DI::dba()->lock($table);
 	}
@@ -348,7 +344,7 @@ class DBA
 	 * @return boolean was the unlock successful?
 	 * @throws \Exception
 	 */
-	public static function unlock()
+	public static function unlock(): bool
 	{
 		return DI::dba()->unlock();
 	}
@@ -358,7 +354,7 @@ class DBA
 	 *
 	 * @return boolean Was the command executed successfully?
 	 */
-	public static function transaction()
+	public static function transaction(): bool
 	{
 		return DI::dba()->transaction();
 	}
@@ -368,7 +364,7 @@ class DBA
 	 *
 	 * @return boolean Was the command executed successfully?
 	 */
-	public static function commit()
+	public static function commit(): bool
 	{
 		return DI::dba()->commit();
 	}
@@ -378,7 +374,7 @@ class DBA
 	 *
 	 * @return boolean Was the command executed successfully?
 	 */
-	public static function rollback()
+	public static function rollback(): bool
 	{
 		return DI::dba()->rollback();
 	}
@@ -386,13 +382,13 @@ class DBA
 	/**
 	 * Delete a row from a table
 	 *
-	 * @param string|array $table      Table name
+	 * @param string $table      Table name
 	 * @param array  $conditions Field condition(s)
 	 *
 	 * @return boolean was the delete successful?
 	 * @throws \Exception
 	 */
-	public static function delete($table, array $conditions, array $options = [])
+	public static function delete(string $table, array $conditions, array $options = []): bool
 	{
 		return DI::dba()->delete($table, $conditions, $options);
 	}
@@ -418,7 +414,7 @@ class DBA
 	 * Only set $old_fields to a boolean value when you are sure that you will update a single row.
 	 * When you set $old_fields to "true" then $fields must contain all relevant fields!
 	 *
-	 * @param string|array  $table      Table name or array [schema => table]
+	 * @param string        $table      Table name in format schema.table (while scheme is optiona)
 	 * @param array         $fields     contains the fields that are updated
 	 * @param array         $condition  condition array with the key values
 	 * @param array|boolean $old_fields array with the old field values that are about to be replaced (true = update on duplicate, false = don't update identical fields)
@@ -427,7 +423,7 @@ class DBA
 	 * @return boolean was the update successfull?
 	 * @throws \Exception
 	 */
-	public static function update($table, $fields, $condition, $old_fields = [], $params = [])
+	public static function update(string $table, array $fields, array $condition, $old_fields = [], array $params = []): bool
 	{
 		return DI::dba()->update($table, $fields, $condition, $old_fields, $params);
 	}
@@ -435,7 +431,7 @@ class DBA
 	/**
 	 * Retrieve a single record from a table and returns it in an associative array
 	 *
-	 * @param string|array $table     Table name or array [schema => table]
+	 * @param string|array $table     Table name in format schema.table (while scheme is optiona)
 	 * @param array        $fields
 	 * @param array        $condition
 	 * @param array        $params
@@ -443,7 +439,7 @@ class DBA
 	 * @throws \Exception
 	 * @see   self::select
 	 */
-	public static function selectFirst($table, array $fields = [], array $condition = [], $params = [])
+	public static function selectFirst($table, array $fields = [], array $condition = [], array $params = [])
 	{
 		return DI::dba()->selectFirst($table, $fields, $condition, $params);
 	}
@@ -451,7 +447,7 @@ class DBA
 	/**
 	 * Select rows from a table and fills an array with the data
 	 *
-	 * @param string|array $table     Table name or array [schema => table]
+	 * @param string $table     Table name in format schema.table (while scheme is optiona)
 	 * @param array  $fields    Array of selected fields, empty for all
 	 * @param array  $condition Array of fields for condition
 	 * @param array  $params    Array of several parameters
@@ -460,7 +456,7 @@ class DBA
 	 * @throws \Exception
 	 * @see   self::select
 	 */
-	public static function selectToArray($table, array $fields = [], array $condition = [], array $params = [])
+	public static function selectToArray(string $table, array $fields = [], array $condition = [], array $params = [])
 	{
 		return DI::dba()->selectToArray($table, $fields, $condition, $params);
 	}
@@ -468,7 +464,7 @@ class DBA
 	/**
 	 * Select rows from a table
 	 *
-	 * @param string|array $table     Table name or array [schema => table]
+	 * @param string $table     Table name in format schema.table (while scheme is optiona)
 	 * @param array  $fields    Array of selected fields, empty for all
 	 * @param array  $condition Array of fields for condition
 	 * @param array  $params    Array of several parameters
@@ -488,7 +484,7 @@ class DBA
 	 * $data = DBA::select($table, $fields, $condition, $params);
 	 * @throws \Exception
 	 */
-	public static function select($table, array $fields = [], array $condition = [], array $params = [])
+	public static function select(string $table, array $fields = [], array $condition = [], array $params = [])
 	{
 		return DI::dba()->select($table, $fields, $condition, $params);
 	}
@@ -496,7 +492,7 @@ class DBA
 	/**
 	 * Counts the rows from a table satisfying the provided condition
 	 *
-	 * @param string|array $table     Table name or array [schema => table]
+	 * @param string $table     Table name in format schema.table (while scheme is optiona)
 	 * @param array  $condition array of fields for condition
 	 * @param array  $params    Array of several parameters
 	 *
@@ -512,7 +508,7 @@ class DBA
 	 * $count = DBA::count($table, $condition);
 	 * @throws \Exception
 	 */
-	public static function count($table, array $condition = [], array $params = [])
+	public static function count(string $table, array $condition = [], array $params = []): int
 	{
 		return DI::dba()->count($table, $condition, $params);
 	}
@@ -525,37 +521,30 @@ class DBA
 	 * - [table1, table2, ...]
 	 * - [schema1 => table1, schema2 => table2, table3, ...]
 	 *
-	 * @param string|array $tables
+	 * @param array $tables Table names
 	 * @return string
 	 */
-	public static function buildTableString($tables)
+	public static function buildTableString(array $tables): string
 	{
-		if (is_string($tables)) {
+		// Quote each entry
-			$tables = [$tables];
+		return implode(',', array_map(['self', 'quoteIdentifier'], $tables));
-		}
-
-		$quotedTables = [];
-
-		foreach ($tables as $schema => $table) {
-			if (is_numeric($schema)) {
-				$quotedTables[] = self::quoteIdentifier($table);
-			} else {
-				$quotedTables[] = self::quoteIdentifier($schema) . '.' . self::quoteIdentifier($table);
-			}
-		}
-
-		return implode(', ', $quotedTables);
 	}
 
 	/**
-	 * Escape an identifier (table or field name)
+	 * Escape an identifier (table or field name) optional with a schema like (schema.)table
 	 *
-	 * @param $identifier
+	 * @param $identifier Table, field name
-	 * @return string
+	 * @return string Quotes table or field name
 	 */
-	public static function quoteIdentifier($identifier)
+	public static function quoteIdentifier(string $identifier): string
 	{
-		return '`' . str_replace('`', '``', $identifier) . '`';
+		return implode(
+			'.',
+			array_map(
+				function (string $identifier) { return '`' . str_replace('`', '``', $identifier) . '`'; },
+				explode('.', $identifier)
+			)
+		);
 	}
 
 	/**
@@ -576,7 +565,7 @@ class DBA
 	 * @param array $condition
 	 * @return string
 	 */
-	public static function buildCondition(array &$condition = [])
+	public static function buildCondition(array &$condition = []): string
 	{
 		$condition = self::collapseCondition($condition);
 		
@@ -600,7 +589,7 @@ class DBA
 	 * @param array $condition
 	 * @return array
 	 */
-	public static function collapseCondition(array $condition)
+	public static function collapseCondition(array $condition): array
 	{
 		// Ensures an always true condition is returned
 		if (count($condition) < 1) {
@@ -675,7 +664,7 @@ class DBA
 	 * @return array A collapsed condition
 	 * @see DBA::collapseCondition() for the condition array formats
 	 */
-	public static function mergeConditions(array ...$conditions)
+	public static function mergeConditions(array ...$conditions): array
 	{
 		if (count($conditions) == 1) {
 			return current($conditions);
@@ -724,7 +713,7 @@ class DBA
 	 * @param array $params
 	 * @return string
 	 */
-	public static function buildParameter(array $params = [])
+	public static function buildParameter(array $params = []): string
 	{
 		$groupby_string = '';
 		if (!empty($params['group_by'])) {
@@ -771,7 +760,7 @@ class DBA
 	 *
 	 * @return array Data array
 	 */
-	public static function toArray($stmt, $do_close = true, int $count = 0)
+	public static function toArray($stmt, bool $do_close = true, int $count = 0): array
 	{
 		return DI::dba()->toArray($stmt, $do_close, $count);
 	}
@@ -783,7 +772,7 @@ class DBA
 	 * @param array  $fields
 	 * @return array casted fields
 	 */
-	public static function castFields(string $table, array $fields)
+	public static function castFields(string $table, array $fields): array
 	{
 		return DI::dba()->castFields($table, $fields);
 	}
@@ -793,7 +782,7 @@ class DBA
 	 *
 	 * @return string Error number (0 if no error)
 	 */
-	public static function errorNo()
+	public static function errorNo(): int
 	{
 		return DI::dba()->errorNo();
 	}
@@ -803,7 +792,7 @@ class DBA
 	 *
 	 * @return string Error message ('' if no error)
 	 */
-	public static function errorMessage()
+	public static function errorMessage(): string
 	{
 		return DI::dba()->errorMessage();
 	}
@@ -814,7 +803,7 @@ class DBA
 	 * @param object $stmt statement object
 	 * @return boolean was the close successful?
 	 */
-	public static function close($stmt)
+	public static function close($stmt): bool
 	{
 		return DI::dba()->close($stmt);
 	}
@@ -827,7 +816,7 @@ class DBA
 	 *      'amount' => Number of concurrent database processes
 	 * @throws \Exception
 	 */
-	public static function processlist()
+	public static function processlist(): array
 	{
 		return DI::dba()->processlist();
 	}
@@ -847,10 +836,9 @@ class DBA
 	 * Checks if $array is a filled array with at least one entry.
 	 *
 	 * @param mixed $array A filled array with at least one entry
-	 *
 	 * @return boolean Whether $array is a filled array or an object with rows
 	 */
-	public static function isResult($array)
+	public static function isResult($array): bool
 	{
 		return DI::dba()->isResult($array);
 	}
@@ -862,7 +850,7 @@ class DBA
 	 * @param boolean $add_quotation add quotation marks for string values
 	 * @return void
 	 */
-	public static function escapeArray(&$arr, $add_quotation = false)
+	public static function escapeArray(&$arr, bool $add_quotation = false)
 	{
 		DI::dba()->escapeArray($arr, $add_quotation);
 	}

src/Database/DBStructure.php

@@ -22,13 +22,12 @@
 namespace Friendica\Database;
 
 use Exception;
-use Friendica\Core\Hook;
 use Friendica\Core\Logger;
-use Friendica\Core\Renderer;
 use Friendica\DI;
 use Friendica\Model\Item;
 use Friendica\Model\User;
 use Friendica\Util\DateTimeFormat;
+use Friendica\Util\Writer\DbaDefinitionSqlWriter;
 
 /**
  * This class contains functions that doesn't need to know if pdo, mysqli or whatever is used.
@@ -42,13 +41,6 @@ class DBStructure
 	const RENAME_COLUMN      = 0;
 	const RENAME_PRIMARY_KEY = 1;
 
-	/**
-	 * Database structure definition loaded from config/dbstructure.config.php
-	 *
-	 * @var array
-	 */
-	private static $definition = [];
-
 	/**
 	 * Set a database version to trigger update functions
 	 *
@@ -73,7 +65,7 @@ class DBStructure
 	 */
 	public static function dropTables(bool $execute)
 	{
-		$postupdate = DI::config()->get("system", "post_update_version", PostUpdate::VERSION);
+		$postupdate = DI::config()->get('system', 'post_update_version', PostUpdate::VERSION);
 		if ($postupdate < PostUpdate::VERSION) {
 			echo DI::l10n()->t('The post update is at version %d, it has to be at %d to safely drop the tables.', $postupdate, PostUpdate::VERSION);
 			return;
@@ -84,7 +76,7 @@ class DBStructure
 			'deliverq', 'dsprphotoq', 'ffinder', 'sign', 'spam', 'term', 'user-item', 'thread', 'item', 'challenge',
 			'auth_codes', 'tokens', 'clients', 'profile_check', 'host'];
 
-		$tables = DBA::selectToArray(['INFORMATION_SCHEMA' => 'TABLES'], ['TABLE_NAME'],
+		$tables = DBA::selectToArray('INFORMATION_SCHEMA.TABLES', ['TABLE_NAME'],
 			['TABLE_SCHEMA' => DBA::databaseName(), 'TABLE_TYPE' => 'BASE TABLE']);
 
 		if (empty($tables)) {
@@ -119,13 +111,13 @@ class DBStructure
 	public static function convertToInnoDB()
 	{
 		$tables = DBA::selectToArray(
-			['information_schema' => 'tables'],
+			'information_schema.tables',
 			['table_name'],
 			['engine' => 'MyISAM', 'table_schema' => DBA::databaseName()]
 		);
 
 		$tables = array_merge($tables, DBA::selectToArray(
-			['information_schema' => 'tables'],
+			'information_schema.tables',
 			['table_name'],
 			['engine' => 'InnoDB', 'ROW_FORMAT' => ['COMPACT', 'REDUNDANT'], 'table_schema' => DBA::databaseName()]
 		));
@@ -153,7 +145,7 @@ class DBStructure
 	 *
 	 * @return string Error message
 	 */
-	private static function printUpdateError($message)
+	private static function printUpdateError(string $message): string
 	{
 		echo DI::l10n()->t("\nError %d occurred during database update:\n%s\n",
 			DBA::errorNo(), DBA::errorMessage());
@@ -161,334 +153,15 @@ class DBStructure
 		return DI::l10n()->t('Errors encountered performing database changes: ') . $message . EOL;
 	}
 
-	public static function writeStructure()
-	{
-		$tables = [];
-		foreach (self::definition(null) as $name => $definition) {
-			$indexes  = [[
-				'name'   => 'Name',
-				'fields' => 'Fields',
-			],
-			[
-				'name'   => '-',
-				'fields' => '-',
-			]];
-
-			$lengths = ['name' => 4, 'fields' => 6];
-			foreach ($definition['indexes'] as $key => $value) {
-				$fieldlist = implode(', ', $value);
-				$indexes[] = ['name' => $key, 'fields' => $fieldlist];
-				$lengths['name']   = max($lengths['name'], strlen($key));
-				$lengths['fields'] = max($lengths['fields'], strlen($fieldlist));
-			}
-
-			array_walk_recursive($indexes, function(&$value, $key) use ($lengths)
-			{
-				$value = str_pad($value, $lengths[$key], $value === '-' ? '-' : ' ');
-			});
-
-			$foreign = [];
-			$fields  = [[
-				'name'    => 'Field',
-				'comment' => 'Description',
-				'type'    => 'Type',
-				'null'    => 'Null',
-				'primary' => 'Key',
-				'default' => 'Default',
-				'extra'   => 'Extra',
-			],
-			[
-				'name'    => '-',
-				'comment' => '-',
-				'type'    => '-',
-				'null'    => '-',
-				'primary' => '-',
-				'default' => '-',
-				'extra'   => '-',
-			]];
-			$lengths = [
-				'name'    => 5,
-				'comment' => 11,
-				'type'    => 4,
-				'null'    => 4,
-				'primary' => 3,
-				'default' => 7,
-				'extra'   => 5,
-			];
-			foreach ($definition['fields'] as $key => $value) {
-				$field = [];
-				$field['name']    = $key;
-				$field['comment'] = $value['comment'] ?? '';
-				$field['type']    = $value['type'];
-				$field['null']    = ($value['not null'] ?? false) ? 'NO' : 'YES';
-				$field['primary'] = ($value['primary'] ?? false) ? 'PRI' : '';
-				$field['default'] = $value['default'] ?? 'NULL';
-				$field['extra']   = $value['extra'] ?? '';
-
-				foreach ($field as $fieldname => $fieldvalue) {
-					$lengths[$fieldname] = max($lengths[$fieldname] ?? 0, strlen($fieldvalue));
-				}
-				$fields[] = $field;
-
-				if (!empty($value['foreign'])) {
-					$foreign[] = [
-						'field'       => $key,
-						'targettable' => array_keys($value['foreign'])[0],
-						'targetfield' => array_values($value['foreign'])[0]
-					];
-				}
-			}
-
-			array_walk_recursive($fields, function(&$value, $key) use ($lengths)
-			{
-				$value = str_pad($value, $lengths[$key], $value === '-' ? '-' : ' ');
-			});
-
-			$tables[] = ['name' => $name, 'comment' => $definition['comment']];
-			$content = Renderer::replaceMacros(Renderer::getMarkupTemplate('structure.tpl'), [
-				'$name'    => $name,
-				'$comment' => $definition['comment'],
-				'$fields'  => $fields,
-				'$indexes' => $indexes,
-				'$foreign' => $foreign,
-			]);
-			$filename = DI::basePath() . '/doc/database/db_' . $name . '.md';
-			file_put_contents($filename, $content);
-		}
-		asort($tables);
-		$content = Renderer::replaceMacros(Renderer::getMarkupTemplate('tables.tpl'), [
-			'$tables'  => $tables,
-		]);
-		$filename = DI::basePath() . '/doc/database.md';
-		file_put_contents($filename, $content);
-	}
-
-	public static function printStructure($basePath)
-	{
-		$database = self::definition($basePath, false);
-
-		echo "-- ------------------------------------------\n";
-		echo "-- " . FRIENDICA_PLATFORM . " " . FRIENDICA_VERSION . " (" . FRIENDICA_CODENAME, ")\n";
-		echo "-- DB_UPDATE_VERSION " . DB_UPDATE_VERSION . "\n";
-		echo "-- ------------------------------------------\n\n\n";
-		foreach ($database as $name => $structure) {
-			echo "--\n";
-			echo "-- TABLE $name\n";
-			echo "--\n";
-			self::createTable($name, $structure, true, false);
-
-			echo "\n";
-		}
-
-		View::printStructure($basePath);
-	}
-
-	/**
-	 * Loads the database structure definition from the static/dbstructure.config.php file.
-	 * On first pass, defines DB_UPDATE_VERSION constant.
-	 *
-	 * @see static/dbstructure.config.php
-	 * @param boolean $with_addons_structure Whether to tack on addons additional tables
-	 * @param string  $basePath              The base path of this application
-	 * @return array
-	 * @throws Exception
-	 */
-	public static function definition($basePath, $with_addons_structure = true)
-	{
-		if (!self::$definition) {
-			if (empty($basePath)) {
-				$basePath = DI::app()->getBasePath();
-			}
-
-			$filename = $basePath . '/static/dbstructure.config.php';
-
-			if (!is_readable($filename)) {
-				throw new Exception('Missing database structure config file static/dbstructure.config.php');
-			}
-
-			$definition = require $filename;
-
-			if (!$definition) {
-				throw new Exception('Corrupted database structure config file static/dbstructure.config.php');
-			}
-
-			self::$definition = $definition;
-		} else {
-			$definition = self::$definition;
-		}
-
-		if ($with_addons_structure) {
-			Hook::callAll('dbstructure_definition', $definition);
-		}
-
-		return $definition;
-	}
-
-	/**
-	 * Get field data for the given table
-	 *
-	 * @param string $table
-	 * @param array $data data fields
-	 * @return array fields for the given
-	 */
-	public static function getFieldsForTable(string $table, array $data = [])
-	{
-		$definition = DBStructure::definition('', false);
-		if (empty($definition[$table])) {
-			return [];
-		}
-
-		$fieldnames = array_keys($definition[$table]['fields']);
-
-		$fields = [];
-
-		// Assign all field that are present in the table
-		foreach ($fieldnames as $field) {
-			if (isset($data[$field])) {
-				// Limit the length of varchar, varbinary, char and binrary fields
-				if (is_string($data[$field]) && preg_match("/char\((\d*)\)/", $definition[$table]['fields'][$field]['type'], $result)) {
-					$data[$field] = mb_substr($data[$field], 0, $result[1]);
-				} elseif (is_string($data[$field]) && preg_match("/binary\((\d*)\)/", $definition[$table]['fields'][$field]['type'], $result)) {
-					$data[$field] = substr($data[$field], 0, $result[1]);
-				}
-				$fields[$field] = $data[$field];
-			}
-		}
-
-		return $fields;
-	}
-
-	private static function createTable($name, $structure, $verbose, $action)
-	{
-		$r = true;
-
-		$engine = "";
-		$comment = "";
-		$sql_rows = [];
-		$primary_keys = [];
-		$foreign_keys = [];
-
-		foreach ($structure["fields"] as $fieldname => $field) {
-			$sql_rows[] = "`" . DBA::escape($fieldname) . "` " . self::FieldCommand($field);
-			if (!empty($field['primary'])) {
-				$primary_keys[] = $fieldname;
-			}
-			if (!empty($field['foreign'])) {
-				$foreign_keys[$fieldname] = $field;
-			}
-		}
-
-		if (!empty($structure["indexes"])) {
-			foreach ($structure["indexes"] as $indexname => $fieldnames) {
-				$sql_index = self::createIndex($indexname, $fieldnames, "");
-				if (!is_null($sql_index)) {
-					$sql_rows[] = $sql_index;
-				}
-			}
-		}
-
-		foreach ($foreign_keys as $fieldname => $parameters) {
-			$sql_rows[] = self::foreignCommand($name, $fieldname, $parameters);
-		}
-
-		if (isset($structure["engine"])) {
-			$engine = " ENGINE=" . $structure["engine"];
-		}
-
-		if (isset($structure["comment"])) {
-			$comment = " COMMENT='" . DBA::escape($structure["comment"]) . "'";
-		}
-
-		$sql = implode(",\n\t", $sql_rows);
-
-		$sql = sprintf("CREATE TABLE IF NOT EXISTS `%s` (\n\t", DBA::escape($name)) . $sql .
-			"\n)" . $engine . " DEFAULT COLLATE utf8mb4_general_ci" . $comment;
-		if ($verbose) {
-			echo $sql . ";\n";
-		}
-
-		if ($action) {
-			$r = DBA::e($sql);
-		}
-
-		return $r;
-	}
-
-	private static function FieldCommand($parameters, $create = true)
-	{
-		$fieldstruct = $parameters["type"];
-
-		if (isset($parameters["Collation"])) {
-			$fieldstruct .= " COLLATE " . $parameters["Collation"];
-		}
-
-		if (isset($parameters["not null"])) {
-			$fieldstruct .= " NOT NULL";
-		}
-
-		if (isset($parameters["default"])) {
-			if (strpos(strtolower($parameters["type"]), "int") !== false) {
-				$fieldstruct .= " DEFAULT " . $parameters["default"];
-			} else {
-				$fieldstruct .= " DEFAULT '" . $parameters["default"] . "'";
-			}
-		}
-		if (isset($parameters["extra"])) {
-			$fieldstruct .= " " . $parameters["extra"];
-		}
-
-		if (isset($parameters["comment"])) {
-			$fieldstruct .= " COMMENT '" . DBA::escape($parameters["comment"]) . "'";
-		}
-
-		/*if (($parameters["primary"] != "") && $create)
-			$fieldstruct .= " PRIMARY KEY";*/
-
-		return ($fieldstruct);
-	}
-
-	private static function createIndex($indexname, $fieldnames, $method = "ADD")
-	{
-		$method = strtoupper(trim($method));
-		if ($method != "" && $method != "ADD") {
-			throw new Exception("Invalid parameter 'method' in self::createIndex(): '$method'");
-		}
-
-		if (in_array($fieldnames[0], ["UNIQUE", "FULLTEXT"])) {
-			$index_type = array_shift($fieldnames);
-			$method .= " " . $index_type;
-		}
-
-		$names = "";
-		foreach ($fieldnames as $fieldname) {
-			if ($names != "") {
-				$names .= ",";
-			}
-
-			if (preg_match('|(.+)\((\d+)\)|', $fieldname, $matches)) {
-				$names .= "`" . DBA::escape($matches[1]) . "`(" . intval($matches[2]) . ")";
-			} else {
-				$names .= "`" . DBA::escape($fieldname) . "`";
-			}
-		}
-
-		if ($indexname == "PRIMARY") {
-			return sprintf("%s PRIMARY KEY(%s)", $method, $names);
-		}
-
-
-		$sql = sprintf("%s INDEX `%s` (%s)", $method, DBA::escape($indexname), $names);
-		return ($sql);
-	}
-
 	/**
 	 * Perform a database structure dryrun (means: just simulating)
 	 *
+	 * @return string Empty string if the update is successful, error messages otherwise
 	 * @throws Exception
 	 */
-	public static function dryRun()
+	public static function dryRun(): string
 	{
-		self::update(DI::app()->getBasePath(), true, false);
+		return self::update(true, false);
 	}
 
 	/**
@@ -500,13 +173,13 @@ class DBStructure
 	 * @return string Empty string if the update is successful, error messages otherwise
 	 * @throws Exception
 	 */
-	public static function performUpdate(bool $enable_maintenance_mode = true, bool $verbose = false)
+	public static function performUpdate(bool $enable_maintenance_mode = true, bool $verbose = false): string
 	{
 		if ($enable_maintenance_mode) {
 			DI::config()->set('system', 'maintenance', 1);
 		}
 
-		$status = self::update(DI::app()->getBasePath(), $verbose, true);
+		$status = self::update($verbose, true);
 
 		if ($enable_maintenance_mode) {
 			DI::config()->set('system', 'maintenance', 0);
@@ -519,20 +192,17 @@ class DBStructure
 	/**
 	 * Updates DB structure from the installation and returns eventual errors messages
 	 *
-	 * @param string $basePath   The base path of this application
-	 *
 	 * @return string Empty string if the update is successful, error messages otherwise
 	 * @throws Exception
 	 */
-	public static function install(string $basePath)
+	public static function install(): string
 	{
-		return self::update($basePath, false, true, true);
+		return self::update(false, true, true);
 	}
 
 	/**
 	 * Updates DB structure and returns eventual errors messages
 	 *
-	 * @param string $basePath   The base path of this application
 	 * @param bool   $verbose
 	 * @param bool   $action     Whether to actually apply the update
 	 * @param bool   $install    Is this the initial update during the installation?
@@ -541,7 +211,7 @@ class DBStructure
 	 * @return string Empty string if the update is successful, error messages otherwise
 	 * @throws Exception
 	 */
-	private static function update($basePath, $verbose, $action, $install = false, array $tables = null, array $definition = null)
+	private static function update(bool $verbose, bool $action, bool $install = false, array $tables = null, array $definition = null): string
 	{
 		$in_maintenance_mode = DI::config()->get('system', 'maintenance');
 
@@ -579,7 +249,7 @@ class DBStructure
 
 		// Get the definition
 		if (is_null($definition)) {
-			$definition = self::definition($basePath);
+			$definition = DI::dbaDefinition()->getAll();
 		}
 
 		// MySQL >= 5.7.4 doesn't support the IGNORE keyword in ALTER TABLE statements
@@ -595,10 +265,16 @@ class DBStructure
 			$is_new_table = false;
 			$sql3         = "";
 			if (!isset($database[$name])) {
-				$r = self::createTable($name, $structure, $verbose, $action);
+				$sql = DbaDefinitionSqlWriter::createTable($name, $structure, $verbose, $action);
+				if ($verbose) {
+					echo $sql;
+				}
+				if ($action) {
+					$r = DBA::e($sql);
 					if (!DBA::isResult($r)) {
 						$errors .= self::printUpdateError($name);
 					}
+				}
 				$is_new_table = true;
 			} else {
 				/*
@@ -606,15 +282,15 @@ class DBStructure
 				 * or the definition differ from current status
 				 * and index name doesn't start with "local_"
 				 */
-				foreach ($database[$name]["indexes"] as $indexname => $fieldnames) {
+				foreach ($database[$name]["indexes"] as $indexName => $fieldNames) {
-					$current_index_definition = implode(",", $fieldnames);
+					$current_index_definition = implode(",", $fieldNames);
-					if (isset($structure["indexes"][$indexname])) {
+					if (isset($structure["indexes"][$indexName])) {
-						$new_index_definition = implode(",", $structure["indexes"][$indexname]);
+						$new_index_definition = implode(",", $structure["indexes"][$indexName]);
 					} else {
 						$new_index_definition = "__NOT_SET__";
 					}
-					if ($current_index_definition != $new_index_definition && substr($indexname, 0, 6) != 'local_') {
+					if ($current_index_definition != $new_index_definition && substr($indexName, 0, 6) != 'local_') {
-						$sql2 = self::dropIndex($indexname);
+						$sql2 = DbaDefinitionSqlWriter::dropIndex($indexName);
 						if ($sql3 == "") {
 							$sql3 = "ALTER" . $ignore . " TABLE `" . $name . "` " . $sql2;
 						} else {
@@ -623,9 +299,9 @@ class DBStructure
 					}
 				}
 				// Compare the field structure field by field
-				foreach ($structure["fields"] as $fieldname => $parameters) {
+				foreach ($structure["fields"] as $fieldName => $parameters) {
-					if (!isset($database[$name]["fields"][$fieldname])) {
+					if (!isset($database[$name]["fields"][$fieldName])) {
-						$sql2 = self::addTableField($fieldname, $parameters);
+						$sql2 = DbaDefinitionSqlWriter::addTableField($fieldName, $parameters);
 						if ($sql3 == "") {
 							$sql3 = "ALTER" . $ignore . " TABLE `" . $name . "` " . $sql2;
 						} else {
@@ -633,7 +309,7 @@ class DBStructure
 						}
 					} else {
 						// Compare the field definition
-						$field_definition = $database[$name]["fields"][$fieldname];
+						$field_definition = $database[$name]["fields"][$fieldName];
 
 						// Remove the relation data that is used for the referential integrity
 						unset($parameters['relation']);
@@ -653,7 +329,7 @@ class DBStructure
 						$current_field_definition = DBA::cleanQuery(implode(",", $field_definition));
 						$new_field_definition     = DBA::cleanQuery(implode(",", $parameters));
 						if ($current_field_definition != $new_field_definition) {
-							$sql2 = self::modifyTableField($fieldname, $parameters);
+							$sql2 = DbaDefinitionSqlWriter::modifyTableField($fieldName, $parameters);
 							if ($sql3 == "") {
 								$sql3 = "ALTER" . $ignore . " TABLE `" . $name . "` " . $sql2;
 							} else {
@@ -670,15 +346,15 @@ class DBStructure
 			 * Don't create keys if table is new
 			 */
 			if (!$is_new_table) {
-				foreach ($structure["indexes"] as $indexname => $fieldnames) {
+				foreach ($structure["indexes"] as $indexName => $fieldNames) {
-					if (isset($database[$name]["indexes"][$indexname])) {
+					if (isset($database[$name]["indexes"][$indexName])) {
-						$current_index_definition = implode(",", $database[$name]["indexes"][$indexname]);
+						$current_index_definition = implode(",", $database[$name]["indexes"][$indexName]);
 					} else {
 						$current_index_definition = "__NOT_SET__";
 					}
-					$new_index_definition = implode(",", $fieldnames);
+					$new_index_definition = implode(",", $fieldNames);
 					if ($current_index_definition != $new_index_definition) {
-						$sql2 = self::createIndex($indexname, $fieldnames);
+						$sql2 = DbaDefinitionSqlWriter::createIndex($indexName, $fieldNames);
 
 						if ($sql2 != "") {
 							if ($sql3 == "") {
@@ -694,17 +370,17 @@ class DBStructure
 
 				// Foreign keys
 				// Compare the field structure field by field
-				foreach ($structure["fields"] as $fieldname => $parameters) {
+				foreach ($structure["fields"] as $fieldName => $parameters) {
 					if (empty($parameters['foreign'])) {
 						continue;
 					}
 
-					$constraint = self::getConstraintName($name, $fieldname, $parameters);
+					$constraint = self::getConstraintName($name, $fieldName, $parameters);
 
 					unset($existing_foreign_keys[$constraint]);
 
 					if (empty($database[$name]['foreign_keys'][$constraint])) {
-						$sql2 = self::addForeignKey($name, $fieldname, $parameters);
+						$sql2 = DbaDefinitionSqlWriter::addForeignKey($fieldName, $parameters);
 
 						if ($sql3 == "") {
 							$sql3 = "ALTER" . $ignore . " TABLE `" . $name . "` " . $sql2;
@@ -715,7 +391,7 @@ class DBStructure
 				}
 
 				foreach ($existing_foreign_keys as $param) {
-					$sql2 = self::dropForeignKey($param['CONSTRAINT_NAME']);
+					$sql2 = DbaDefinitionSqlWriter::dropForeignKey($param['CONSTRAINT_NAME']);
 
 					if ($sql3 == "") {
 						$sql3 = "ALTER" . $ignore . " TABLE `" . $name . "` " . $sql2;
@@ -767,9 +443,9 @@ class DBStructure
 
 				// Now have a look at the field collations
 				// Compare the field structure field by field
-				foreach ($structure["fields"] as $fieldname => $parameters) {
+				foreach ($structure["fields"] as $fieldName => $parameters) {
 					// Compare the field definition
-					$field_definition = ($database[$name]["fields"][$fieldname] ?? '') ?: ['Collation' => ''];
+					$field_definition = ($database[$name]["fields"][$fieldName] ?? '') ?: ['Collation' => ''];
 
 					// Define the default collation if not given
 					if (!isset($parameters['Collation']) && !empty($field_definition['Collation'])) {
@@ -779,7 +455,7 @@ class DBStructure
 					}
 
 					if ($field_definition['Collation'] != $parameters['Collation']) {
-						$sql2 = self::modifyTableField($fieldname, $parameters);
+						$sql2 = DbaDefinitionSqlWriter::modifyTableField($fieldName, $parameters);
 						if (($sql3 == "") || (substr($sql3, -2, 2) == "; ")) {
 							$sql3 .= "ALTER" . $ignore . " TABLE `" . $name . "` " . $sql2;
 						} else {
@@ -826,23 +502,29 @@ class DBStructure
 		return $errors;
 	}
 
-	private static function tableStructure($table)
+	/**
+	 * Returns an array with table structure information
+	 *
+	 * @param string $table Name of table
+	 * @return array Table structure information
+	 */
+	private static function tableStructure(string $table): array
 	{
 		// This query doesn't seem to be executable as a prepared statement
 		$indexes = DBA::toArray(DBA::p("SHOW INDEX FROM " . DBA::quoteIdentifier($table)));
 
-		$fields = DBA::selectToArray(['INFORMATION_SCHEMA' => 'COLUMNS'],
+		$fields = DBA::selectToArray('INFORMATION_SCHEMA.COLUMNS',
 			['COLUMN_NAME', 'COLUMN_TYPE', 'IS_NULLABLE', 'COLUMN_DEFAULT', 'EXTRA',
 			'COLUMN_KEY', 'COLLATION_NAME', 'COLUMN_COMMENT'],
 			["`TABLE_SCHEMA` = ? AND `TABLE_NAME` = ?",
 			DBA::databaseName(), $table]);
 
-		$foreign_keys = DBA::selectToArray(['INFORMATION_SCHEMA' => 'KEY_COLUMN_USAGE'],
+		$foreign_keys = DBA::selectToArray('INFORMATION_SCHEMA.KEY_COLUMN_USAGE',
 			['COLUMN_NAME', 'CONSTRAINT_NAME', 'REFERENCED_TABLE_NAME', 'REFERENCED_COLUMN_NAME'],
 			["`TABLE_SCHEMA` = ? AND `TABLE_NAME` = ? AND `REFERENCED_TABLE_SCHEMA` IS NOT NULL",
 			DBA::databaseName(), $table]);
 
-		$table_status = DBA::selectFirst(['INFORMATION_SCHEMA' => 'TABLES'],
+		$table_status = DBA::selectFirst('INFORMATION_SCHEMA.TABLES',
 			['ENGINE', 'TABLE_COLLATION', 'TABLE_COMMENT'],
 			["`TABLE_SCHEMA` = ? AND `TABLE_NAME` = ?",
 			DBA::databaseName(), $table]);
@@ -909,65 +591,20 @@ class DBStructure
 			}
 		}
 
-		return ["fields" => $fielddata, "indexes" => $indexdata,
+		return [
-			"foreign_keys" => $foreigndata, "table_status" => $table_status];
+			'fields' => $fielddata,
+			'indexes' => $indexdata,
+			'foreign_keys' => $foreigndata,
+			'table_status' => $table_status
+		];
 	}
 
-	private static function dropIndex($indexname)
+	private static function getConstraintName(string $tableName, string $fieldName, array $parameters): string
-	{
-		$sql = sprintf("DROP INDEX `%s`", DBA::escape($indexname));
-		return ($sql);
-	}
-
-	private static function addTableField($fieldname, $parameters)
-	{
-		$sql = sprintf("ADD `%s` %s", DBA::escape($fieldname), self::FieldCommand($parameters));
-		return ($sql);
-	}
-
-	private static function modifyTableField($fieldname, $parameters)
-	{
-		$sql = sprintf("MODIFY `%s` %s", DBA::escape($fieldname), self::FieldCommand($parameters, false));
-		return ($sql);
-	}
-
-	private static function getConstraintName(string $tablename, string $fieldname, array $parameters)
 	{
 		$foreign_table = array_keys($parameters['foreign'])[0];
 		$foreign_field = array_values($parameters['foreign'])[0];
 
-		return $tablename . "-" . $fieldname. "-" . $foreign_table. "-" . $foreign_field;
+		return $tableName . '-' . $fieldName. '-' . $foreign_table. '-' . $foreign_field;
-	}
-
-	private static function foreignCommand(string $tablename, string $fieldname, array $parameters) {
-		$foreign_table = array_keys($parameters['foreign'])[0];
-		$foreign_field = array_values($parameters['foreign'])[0];
-
-		$sql = "FOREIGN KEY (`" . $fieldname . "`) REFERENCES `" . $foreign_table . "` (`" . $foreign_field . "`)";
-
-		if (!empty($parameters['foreign']['on update'])) {
-			$sql .= " ON UPDATE " . strtoupper($parameters['foreign']['on update']);
-		} else {
-			$sql .= " ON UPDATE RESTRICT";
-		}
-
-		if (!empty($parameters['foreign']['on delete'])) {
-			$sql .= " ON DELETE " . strtoupper($parameters['foreign']['on delete']);
-		} else {
-			$sql .= " ON DELETE CASCADE";
-		}
-
-		return $sql;
-	}
-
-	private static function addForeignKey(string $tablename, string $fieldname, array $parameters)
-	{
-		return sprintf("ADD %s", self::foreignCommand($tablename, $fieldname, $parameters));
-	}
-
-	private static function dropForeignKey(string $constraint)
-	{
-		return sprintf("DROP FOREIGN KEY `%s`", $constraint);
 	}
 
 	/**
@@ -983,7 +620,7 @@ class DBStructure
 	 * @return boolean Was the renaming successful?
 	 * @throws Exception
 	 */
-	public static function rename($table, $columns, $type = self::RENAME_COLUMN)
+	public static function rename(string $table, array $columns, int $type = self::RENAME_COLUMN): bool
 	{
 		if (empty($table) || empty($columns)) {
 			return false;
@@ -1019,7 +656,7 @@ class DBStructure
 				return false;
 		}
 
-		$sql .= ";";
+		$sql .= ';';
 
 		$stmt = DBA::p($sql);
 
@@ -1043,7 +680,7 @@ class DBStructure
 	 * @return boolean Does the table exist?
 	 * @throws Exception
 	 */
-	public static function existsColumn($table, $columns = [])
+	public static function existsColumn(string $table, array $columns = []): bool
 	{
 		if (empty($table)) {
 			return false;
@@ -1079,39 +716,33 @@ class DBStructure
 	/**
 	 * Check if a foreign key exists for the given table field
 	 *
-	 * @param string $table
+	 * @param string $table Table name
-	 * @param string $field
+	 * @param string $field Field name
-	 * @return boolean
+	 * @return boolean Wether a foreign key exists
 	 */
-	public static function existsForeignKeyForField(string $table, string $field)
+	public static function existsForeignKeyForField(string $table, string $field): bool
 	{
-		return DBA::exists(['INFORMATION_SCHEMA' => 'KEY_COLUMN_USAGE'],
+		return DBA::exists('INFORMATION_SCHEMA.KEY_COLUMN_USAGE',
 			["`TABLE_SCHEMA` = ? AND `TABLE_NAME` = ? AND `COLUMN_NAME` = ? AND `REFERENCED_TABLE_SCHEMA` IS NOT NULL",
 			DBA::databaseName(), $table, $field]);
 	}
+
 	/**
 	 * Check if a table exists
 	 *
-	 * @param string|array $table Table name
+	 * @param string $table Single table name (please loop yourself)
-	 *
 	 * @return boolean Does the table exist?
 	 * @throws Exception
 	 */
-	public static function existsTable($table)
+	public static function existsTable(string $table): bool
 	{
 		if (empty($table)) {
 			return false;
 		}
 
-		if (is_array($table)) {
-			$condition = ['table_schema' => key($table), 'table_name' => current($table)];
-		} else {
 		$condition = ['table_schema' => DBA::databaseName(), 'table_name' => $table];
-		}
 
-		$result = DBA::exists(['information_schema' => 'tables'], $condition);
+		return DBA::exists('information_schema.tables', $condition);
-
-		return $result;
 	}
 
 	/**
@@ -1122,7 +753,7 @@ class DBStructure
 	 * @return array An array of the table columns
 	 * @throws Exception
 	 */
-	public static function getColumns($table)
+	public static function getColumns(string $table): array
 	{
 		$stmtColumns = DBA::p("SHOW COLUMNS FROM `" . $table . "`");
 		return DBA::toArray($stmtColumns);
@@ -1130,6 +761,9 @@ class DBStructure
 
 	/**
 	 * Check if initial database values do exist - or create them
+	 *
+	 * @param bool $verbose Whether to output messages
+	 * @return void
 	 */
 	public static function checkInitialValues(bool $verbose = false)
 	{
@@ -1163,9 +797,9 @@ class DBStructure
 
 		if (self::existsTable('user') && !DBA::exists('user', ['uid' => 0])) {
 			$user = [
-				"verified" => true,
+				'verified' => true,
-				"page-flags" => User::PAGE_FLAGS_SOAPBOX,
+				'page-flags' => User::PAGE_FLAGS_SOAPBOX,
-				"account-type" => User::ACCOUNT_TYPE_RELAY,
+				'account-type' => User::ACCOUNT_TYPE_RELAY,
 			];
 			DBA::insert('user', $user);
 			$lastid = DBA::lastInsertId();
@@ -1265,12 +899,14 @@ class DBStructure
 	 *
 	 * @return boolean
 	 */
-	private static function isUpdating()
+	private static function isUpdating(): bool
 	{
 		$isUpdate = false;
 
-		$processes = DBA::select(['information_schema' => 'processlist'], ['info'],
+		$processes = DBA::select('information_schema.processlist', ['info'], [
-			['db' => DBA::databaseName(), 'command' => ['Query', 'Execute']]);
+			'db' => DBA::databaseName(),
+			'command' => ['Query', 'Execute']
+		]);
 
 		while ($process = DBA::fetch($processes)) {
 			$parts = explode(' ', $process['info']);

src/Database/Database.php

@@ -23,9 +23,12 @@ namespace Friendica\Database;
 
 use Friendica\Core\Config\ValueObject\Cache;
 use Friendica\Core\System;
+use Friendica\Database\Definition\DbaDefinition;
+use Friendica\Database\Definition\ViewDefinition;
 use Friendica\Network\HTTPException\ServiceUnavailableException;
 use Friendica\Util\DateTimeFormat;
 use Friendica\Util\Profiler;
+use InvalidArgumentException;
 use mysqli;
 use mysqli_result;
 use mysqli_stmt;
@@ -63,7 +66,7 @@ class Database
 	protected $server_info    = '';
 	/** @var PDO|mysqli */
 	protected $connection;
-	protected $driver;
+	protected $driver = '';
 	protected $pdo_emulate_prepares = false;
 	private $error          = false;
 	private $errorno        = 0;
@@ -72,23 +75,29 @@ class Database
 	protected $in_retrial     = false;
 	protected $testmode       = false;
 	private $relation       = [];
+	/** @var DbaDefinition */
+	protected $dbaDefinition;
+	/** @var ViewDefinition */
+	protected $viewDefinition;
 
-	public function __construct(Cache $configCache, Profiler $profiler, LoggerInterface $logger)
+	public function __construct(Cache $configCache, Profiler $profiler, DbaDefinition $dbaDefinition, ViewDefinition $viewDefinition, LoggerInterface $logger)
 	{
 		// We are storing these values for being able to perform a reconnect
 		$this->configCache    = $configCache;
 		$this->profiler       = $profiler;
 		$this->logger         = $logger;
+		$this->dbaDefinition  = $dbaDefinition;
+		$this->viewDefinition = $viewDefinition;
 
 		$this->connect();
-
-		if ($this->isConnected()) {
-			// Loads DB_UPDATE_VERSION constant
-			DBStructure::definition($configCache->get('system', 'basepath'), false);
-		}
 	}
 
-	public function connect()
+	/**
+	 * Tries to connect to database
+	 *
+	 * @return bool Success
+	 */
+	public function connect(): bool
 	{
 		if (!is_null($this->connection) && $this->connected()) {
 			return $this->connected;
@@ -175,7 +184,7 @@ class Database
 
 		// No suitable SQL driver was found.
 		if (!$this->connected) {
-			$this->driver     = null;
+			$this->driver     = '';
 			$this->connection = null;
 		}
 
@@ -227,7 +236,7 @@ class Database
 			}
 		}
 
-		$this->driver    = null;
+		$this->driver    = '';
 		$this->connected = false;
 	}
 
@@ -255,7 +264,7 @@ class Database
 	 *
 	 * @return string with either "pdo" or "mysqli"
 	 */
-	public function getDriver()
+	public function getDriver(): string
 	{
 		return $this->driver;
 	}
@@ -266,9 +275,9 @@ class Database
 	 * This function discriminate between the deprecated mysql API and the current
 	 * object-oriented mysqli API. Example of returned string: 5.5.46-0+deb8u1
 	 *
-	 * @return string
+	 * @return string Database server information
 	 */
-	public function serverInfo()
+	public function serverInfo(): string
 	{
 		if ($this->server_info == '') {
 			switch ($this->driver) {
@@ -286,10 +295,10 @@ class Database
 	/**
 	 * Returns the selected database name
 	 *
-	 * @return string
+	 * @return string Database name
 	 * @throws \Exception
 	 */
-	public function databaseName()
+	public function databaseName(): string
 	{
 		$ret  = $this->p("SELECT DATABASE() AS `db`");
 		$data = $this->toArray($ret);
@@ -300,10 +309,10 @@ class Database
 	 * Analyze a database query and log this if some conditions are met.
 	 *
 	 * @param string $query The database query that will be analyzed
-	 *
+	 * @return void
 	 * @throws \Exception
 	 */
-	private function logIndex($query)
+	private function logIndex(string $query)
 	{
 
 		if (!$this->configCache->get('system', 'db_log_index')) {
@@ -359,11 +368,10 @@ class Database
 	 * Removes every not allowlisted character from the identifier string
 	 *
 	 * @param string $identifier
-	 *
 	 * @return string sanitized identifier
 	 * @throws \Exception
 	 */
-	private function sanitizeIdentifier($identifier)
+	private function sanitizeIdentifier(string $identifier): string
 	{
 		return preg_replace('/[^A-Za-z0-9_\-]+/', '', $identifier);
 	}
@@ -383,11 +391,21 @@ class Database
 		}
 	}
 
-	public function isConnected()
+	/**
+	 * Returns connected flag
+	 *
+	 * @return bool Whether connection to database was success
+	 */
+	public function isConnected(): bool
 	{
 		return $this->connected;
 	}
 
+	/**
+	 * Checks connection status
+	 *
+	 * @return bool Whether connection to database was success
+	 */
 	public function connected()
 	{
 		$connected = false;
@@ -424,7 +442,7 @@ class Database
 	 *
 	 * @return string The input SQL string modified if necessary.
 	 */
-	public function anyValueFallback($sql)
+	public function anyValueFallback(string $sql): string
 	{
 		$server_info = $this->serverInfo();
 		if (version_compare($server_info, '5.7.5', '<') ||
@@ -442,7 +460,7 @@ class Database
 	 *
 	 * @return string The replaced SQL query
 	 */
-	private function replaceParameters($sql, $args)
+	private function replaceParameters(string $sql, array $args): string
 	{
 		$offset = 0;
 		foreach ($args as $param => $value) {
@@ -476,7 +494,7 @@ class Database
 	 * @return bool|object statement object or result object
 	 * @throws \Exception
 	 */
-	public function p($sql)
+	public function p(string $sql)
 	{
 
 		$this->profiler->startRecording('database');
@@ -541,7 +559,7 @@ class Database
 					if (!$retval = $this->connection->query($this->replaceParameters($sql, $args))) {
 						$errorInfo     = $this->connection->errorInfo();
 						$this->error   = $errorInfo[2];
-						$this->errorno = $errorInfo[1];
+						$this->errorno = (int) $errorInfo[1];
 						$retval        = false;
 						$is_error      = true;
 						break;
@@ -554,7 +572,7 @@ class Database
 				if (!$stmt = $this->connection->prepare($sql)) {
 					$errorInfo     = $this->connection->errorInfo();
 					$this->error   = $errorInfo[2];
-					$this->errorno = $errorInfo[1];
+					$this->errorno = (int) $errorInfo[1];
 					$retval        = false;
 					$is_error      = true;
 					break;
@@ -574,7 +592,7 @@ class Database
 				if (!$stmt->execute()) {
 					$errorInfo     = $stmt->errorInfo();
 					$this->error   = $errorInfo[2];
-					$this->errorno = $errorInfo[1];
+					$this->errorno = (int) $errorInfo[1];
 					$retval        = false;
 					$is_error      = true;
 				} else {
@@ -709,7 +727,7 @@ class Database
 			}
 
 			$this->error   = $error;
-			$this->errorno = $errorno;
+			$this->errorno = (int) $errorno;
 		}
 
 		$this->profiler->stopRecording();
@@ -741,8 +759,9 @@ class Database
 	 * @return boolean Was the query successfull? False is returned only if an error occurred
 	 * @throws \Exception
 	 */
-	public function e($sql)
+	public function e(string $sql): bool
 	{
+		$retval = false;
 
 		$this->profiler->startRecording('database_write');
 
@@ -804,13 +823,14 @@ class Database
 	/**
 	 * Check if data exists
 	 *
-	 * @param string|array $table     Table name or array [schema => table]
+	 * @param string $table     Table name in format schema.table (while scheme is optiona)
-	 * @param array        $condition array of fields for condition
+	 * @param array  $condition Array of fields for condition
 	 *
 	 * @return boolean Are there rows for that condition?
 	 * @throws \Exception
+	 * @todo Please unwrap the DBStructure::existsTable() call so this method has one behavior only: checking existence on records
 	 */
-	public function exists($table, $condition)
+	public function exists(string $table, array $condition): bool
 	{
 		if (empty($table)) {
 			return false;
@@ -850,10 +870,10 @@ class Database
 	 *
 	 * @param string $sql SQL statement
 	 *
-	 * @return array first row of query
+	 * @return array|bool first row of query or false on failure
 	 * @throws \Exception
 	 */
-	public function fetchFirst($sql)
+	public function fetchFirst(string $sql)
 	{
 		$params = DBA::getParam(func_get_args());
 
@@ -875,7 +895,7 @@ class Database
 	 *
 	 * @return int Number of rows
 	 */
-	public function affectedRows()
+	public function affectedRows(): int
 	{
 		return $this->affected_rows;
 	}
@@ -887,7 +907,7 @@ class Database
 	 *
 	 * @return int Number of columns
 	 */
-	public function columnCount($stmt)
+	public function columnCount($stmt): int
 	{
 		if (!is_object($stmt)) {
 			return 0;
@@ -908,7 +928,7 @@ class Database
 	 *
 	 * @return int Number of rows
 	 */
-	public function numRows($stmt)
+	public function numRows($stmt): int
 	{
 		if (!is_object($stmt)) {
 			return 0;
@@ -927,7 +947,7 @@ class Database
 	 *
 	 * @param bool|PDOStatement|mysqli_stmt $stmt statement object
 	 *
-	 * @return array|false current row
+	 * @return array|bool Current row or false on failure
 	 */
 	public function fetch($stmt)
 	{
@@ -987,14 +1007,14 @@ class Database
 	/**
 	 * Insert a row into a table. Field value objects will be cast as string.
 	 *
-	 * @param string|array $table          Table name or array [schema => table]
+	 * @param string $table          Table name in format schema.table (while scheme is optiona)
 	 * @param array  $param          parameter array
 	 * @param int    $duplicate_mode What to do on a duplicated entry
 	 *
 	 * @return boolean was the insert successful?
 	 * @throws \Exception
 	 */
-	public function insert($table, array $param, int $duplicate_mode = self::INSERT_DEFAULT)
+	public function insert(string $table, array $param, int $duplicate_mode = self::INSERT_DEFAULT): bool
 	{
 		if (empty($table) || empty($param)) {
 			$this->logger->info('Table and fields have to be set');
@@ -1003,7 +1023,7 @@ class Database
 
 		$param = $this->castFields($table, $param);
 
-		$table_string = DBA::buildTableString($table);
+		$table_string = DBA::buildTableString([$table]);
 
 		$fields_string = implode(', ', array_map([DBA::class, 'quoteIdentifier'], array_keys($param)));
 
@@ -1038,13 +1058,12 @@ class Database
 	 * Inserts a row with the provided data in the provided table.
 	 * If the data corresponds to an existing row through a UNIQUE or PRIMARY index constraints, it updates the row instead.
 	 *
-	 * @param string|array $table Table name or array [schema => table]
+	 * @param string $table Table name in format schema.table (while scheme is optiona)
 	 * @param array  $param parameter array
-	 *
 	 * @return boolean was the insert successful?
 	 * @throws \Exception
 	 */
-	public function replace($table, array $param)
+	public function replace(string $table, array $param): bool
 	{
 		if (empty($table) || empty($param)) {
 			$this->logger->info('Table and fields have to be set');
@@ -1053,7 +1072,7 @@ class Database
 
 		$param = $this->castFields($table, $param);
 
-		$table_string = DBA::buildTableString($table);
+		$table_string = DBA::buildTableString([$table]);
 
 		$fields_string = implode(', ', array_map([DBA::class, 'quoteIdentifier'], array_keys($param)));
 
@@ -1069,7 +1088,7 @@ class Database
 	 *
 	 * @return integer Last inserted id
 	 */
-	public function lastInsertId()
+	public function lastInsertId(): int
 	{
 		switch ($this->driver) {
 			case self::PDO:
@@ -1087,12 +1106,11 @@ class Database
 	 *
 	 * This function can be extended in the future to accept a table array as well.
 	 *
-	 * @param string|array $table Table name or array [schema => table]
+	 * @param string $table Table name in format schema.table (while scheme is optiona)
-	 *
 	 * @return boolean was the lock successful?
 	 * @throws \Exception
 	 */
-	public function lock($table)
+	public function lock(string $table): bool
 	{
 		// See here: https://dev.mysql.com/doc/refman/5.7/en/lock-tables-and-transactions.html
 		if ($this->driver == self::PDO) {
@@ -1102,7 +1120,7 @@ class Database
 			$this->connection->autocommit(false);
 		}
 
-		$success = $this->e("LOCK TABLES " . DBA::buildTableString($table) . " WRITE");
+		$success = $this->e("LOCK TABLES " . DBA::buildTableString([$table]) . " WRITE");
 
 		if ($this->driver == self::PDO) {
 			$this->connection->setAttribute(PDO::ATTR_EMULATE_PREPARES, $this->pdo_emulate_prepares);
@@ -1126,7 +1144,7 @@ class Database
 	 * @return boolean was the unlock successful?
 	 * @throws \Exception
 	 */
-	public function unlock()
+	public function unlock(): bool
 	{
 		// See here: https://dev.mysql.com/doc/refman/5.7/en/lock-tables-and-transactions.html
 		$this->performCommit();
@@ -1177,7 +1195,12 @@ class Database
 		return true;
 	}
 
-	protected function performCommit()
+	/**
+	 * Performs the commit
+	 *
+	 * @return boolean Was the command executed successfully?
+	 */
+	protected function performCommit(): bool
 	{
 		switch ($this->driver) {
 			case self::PDO:
@@ -1199,7 +1222,7 @@ class Database
 	 *
 	 * @return boolean Was the command executed successfully?
 	 */
-	public function commit()
+	public function commit(): bool
 	{
 		if (!$this->performCommit()) {
 			return false;
@@ -1213,7 +1236,7 @@ class Database
 	 *
 	 * @return boolean Was the command executed successfully?
 	 */
-	public function rollback()
+	public function rollback(): bool
 	{
 		$ret = false;
 
@@ -1230,6 +1253,7 @@ class Database
 				$ret = $this->connection->rollback();
 				break;
 		}
+
 		$this->in_transaction = false;
 		return $ret;
 	}
@@ -1243,14 +1267,14 @@ class Database
 	 * @return boolean was the delete successful?
 	 * @throws \Exception
 	 */
-	public function delete($table, array $conditions)
+	public function delete(string $table, array $conditions): bool
 	{
 		if (empty($table) || empty($conditions)) {
 			$this->logger->info('Table and conditions have to be set');
 			return false;
 		}
 
-		$table_string = DBA::buildTableString($table);
+		$table_string = DBA::buildTableString([$table]);
 
 		$condition_string = DBA::buildCondition($conditions);
 
@@ -1280,7 +1304,7 @@ class Database
 	 * Only set $old_fields to a boolean value when you are sure that you will update a single row.
 	 * When you set $old_fields to "true" then $fields must contain all relevant fields!
 	 *
-	 * @param string|array  $table      Table name or array [schema => table]
+	 * @param string        $table      Table name in format schema.table (while scheme is optiona)
 	 * @param array         $fields     contains the fields that are updated
 	 * @param array         $condition  condition array with the key values
 	 * @param array|boolean $old_fields array with the old field values that are about to be replaced (true = update on duplicate, false = don't update identical fields)
@@ -1288,8 +1312,9 @@ class Database
 	 *
 	 * @return boolean was the update successfull?
 	 * @throws \Exception
+	 * @todo Implement "bool $update_on_duplicate" to avoid mixed type for $old_fields
 	 */
-	public function update($table, $fields, $condition, $old_fields = [], $params = [])
+	public function update(string $table, array $fields, array $condition, $old_fields = [], array $params = [])
 	{
 		if (empty($table) || empty($fields) || empty($condition)) {
 			$this->logger->info('Table, fields and condition have to be set');
@@ -1322,7 +1347,7 @@ class Database
 
 		$fields = $this->castFields($table, $fields);
 
-		$table_string = DBA::buildTableString($table);
+		$table_string = DBA::buildTableString([$table]);
 
 		$condition_string = DBA::buildCondition($condition);
 
@@ -1345,16 +1370,16 @@ class Database
 	/**
 	 * Retrieve a single record from a table and returns it in an associative array
 	 *
-	 * @param string|array $table
+	 * @param string $table     Table name in format schema.table (while scheme is optiona)
-	 * @param array        $fields
+	 * @param array  $fields    Array of selected fields, empty for all
-	 * @param array        $condition
+	 * @param array  $condition Array of fields for condition
-	 * @param array        $params
+	 * @param array  $params    Array of several parameters
 	 *
 	 * @return bool|array
 	 * @throws \Exception
 	 * @see   $this->select
 	 */
-	public function selectFirst($table, array $fields = [], array $condition = [], $params = [])
+	public function selectFirst(string $table, array $fields = [], array $condition = [], array $params = [])
 	{
 		$params['limit'] = 1;
 		$result          = $this->select($table, $fields, $condition, $params);
@@ -1371,16 +1396,15 @@ class Database
 	/**
 	 * Select rows from a table and fills an array with the data
 	 *
-	 * @param string|array $table     Table name or array [schema => table]
+	 * @param string $table     Table name in format schema.table (while scheme is optiona)
 	 * @param array  $fields    Array of selected fields, empty for all
 	 * @param array  $condition Array of fields for condition
 	 * @param array  $params    Array of several parameters
-	 *
 	 * @return array Data array
 	 * @throws \Exception
 	 * @see   self::select
 	 */
-	public function selectToArray($table, array $fields = [], array $condition = [], array $params = [])
+	public function selectToArray(string $table, array $fields = [], array $condition = [], array $params = [])
 	{
 		return $this->toArray($this->select($table, $fields, $condition, $params));
 	}
@@ -1390,9 +1414,9 @@ class Database
 	 *
 	 * @param array $fields 
 	 * @param array $options 
-	 * @return array 
+	 * @return array Escaped fields
 	 */
-	private function escapeFields(array $fields, array $options)
+	private function escapeFields(array $fields, array $options): array
 	{
 		// In the case of a "GROUP BY" we have to add all the ORDER fields to the fieldlist.
 		// This needs to done to apply the "ANY_VALUE(...)" treatment from below to them.
@@ -1446,14 +1470,14 @@ class Database
 	 *
 	 * $data = DBA::select($table, $fields, $condition, $params);
 	 *
-	 * @param string|array $table     Table name or array [schema => table]
+	 * @param string $table     Table name in format schema.table (while scheme is optiona)
 	 * @param array  $fields    Array of selected fields, empty for all
 	 * @param array  $condition Array of fields for condition
 	 * @param array  $params    Array of several parameters
 	 * @return boolean|object
 	 * @throws \Exception
 	 */
-	public function select($table, array $fields = [], array $condition = [], array $params = [])
+	public function select(string $table, array $fields = [], array $condition = [], array $params = [])
 	{
 		if (empty($table)) {
 			return false;
@@ -1466,7 +1490,7 @@ class Database
 			$select_string = '*';
 		}
 
-		$table_string = DBA::buildTableString($table);
+		$table_string = DBA::buildTableString([$table]);
 
 		$condition_string = DBA::buildCondition($condition);
 
@@ -1486,11 +1510,11 @@ class Database
 	/**
 	 * Counts the rows from a table satisfying the provided condition
 	 *
-	 * @param string|array $table     Table name or array [schema => table]
+	 * @param string $table     Table name in format schema.table (while scheme is optiona)
 	 * @param array  $condition Array of fields for condition
 	 * @param array  $params    Array of several parameters
 	 *
-	 * @return int
+	 * @return int Count of rows
 	 *
 	 * Example:
 	 * $table = "post";
@@ -1502,13 +1526,13 @@ class Database
 	 * $count = DBA::count($table, $condition);
 	 * @throws \Exception
 	 */
-	public function count($table, array $condition = [], array $params = [])
+	public function count(string $table, array $condition = [], array $params = []): int
 	{
 		if (empty($table)) {
-			return false;
+			throw new InvalidArgumentException('Parameter "table" cannot be empty.');
 		}
 
-		$table_string = DBA::buildTableString($table);
+		$table_string = DBA::buildTableString([$table]);
 
 		$condition_string = DBA::buildCondition($condition);
 
@@ -1541,7 +1565,7 @@ class Database
 	 *
 	 * @return array Data array
 	 */
-	public function toArray($stmt, $do_close = true, int $count = 0)
+	public function toArray($stmt, bool $do_close = true, int $count = 0): array
 	{
 		if (is_bool($stmt)) {
 			return [];
@@ -1569,7 +1593,8 @@ class Database
 	 * @param array  $fields
 	 * @return array casted fields
 	 */
-	public function castFields(string $table, array $fields) {
+	public function castFields(string $table, array $fields): array
+	{
 		// When there is no data, we don't need to do something
 		if (empty($fields)) {
 			return $fields;
@@ -1587,10 +1612,10 @@ class Database
 
 		$types = [];
 
-		$tables = DBStructure::definition('', false);
+		$tables = $this->dbaDefinition->getAll();
 		if (empty($tables[$table])) {
 			// When a matching table wasn't found we check if it is a view
-			$views = View::definition('', false);
+			$views = $this->viewDefinition->getAll();
 			if (empty($views[$table])) {
 				return $fields;
 			}
@@ -1632,7 +1657,7 @@ class Database
 	 *
 	 * @return string Error number (0 if no error)
 	 */
-	public function errorNo()
+	public function errorNo(): int
 	{
 		return $this->errorno;
 	}
@@ -1642,7 +1667,7 @@ class Database
 	 *
 	 * @return string Error message ('' if no error)
 	 */
-	public function errorMessage()
+	public function errorMessage(): string
 	{
 		return $this->error;
 	}
@@ -1654,7 +1679,7 @@ class Database
 	 *
 	 * @return boolean was the close successful?
 	 */
-	public function close($stmt)
+	public function close($stmt): bool
 	{
 
 		$this->profiler->startRecording('database');
@@ -1696,38 +1721,39 @@ class Database
 	 *      'amount' => Number of concurrent database processes
 	 * @throws \Exception
 	 */
-	public function processlist()
+	public function processlist(): array
 	{
-		$ret  = $this->p("SHOW PROCESSLIST");
+		$ret  = $this->p('SHOW PROCESSLIST');
 		$data = $this->toArray($ret);
 
 		$processes = 0;
 		$states    = [];
 		foreach ($data as $process) {
-			$state = trim($process["State"]);
+			$state = trim($process['State']);
 
 			// Filter out all non blocking processes
-			if (!in_array($state, ["", "init", "statistics", "updating"])) {
+			if (!in_array($state, ['', 'init', 'statistics', 'updating'])) {
 				++$states[$state];
 				++$processes;
 			}
 		}
 
-		$statelist = "";
+		$statelist = '';
 		foreach ($states as $state => $usage) {
-			if ($statelist != "") {
+			if ($statelist != '') {
-				$statelist .= ", ";
+				$statelist .= ', ';
 			}
-			$statelist .= $state . ": " . $usage;
+			$statelist .= $state . ': ' . $usage;
 		}
-		return (["list" => $statelist, "amount" => $processes]);
+		return (['list' => $statelist, 'amount' => $processes]);
 	}
 
 	/**
 	 * Fetch a database variable
 	 *
 	 * @param string $name
-	 * @return string content
+	 * @return string|null content or null if inexistent
+	 * @throws \Exception
 	 */
 	public function getVariable(string $name)
 	{
@@ -1739,10 +1765,9 @@ class Database
 	 * Checks if $array is a filled array with at least one entry.
 	 *
 	 * @param mixed $array A filled array with at least one entry
-	 *
 	 * @return boolean Whether $array is a filled array or an object with rows
 	 */
-	public function isResult($array)
+	public function isResult($array): bool
 	{
 		// It could be a return value from an update statement
 		if (is_bool($array)) {
@@ -1762,10 +1787,9 @@ class Database
 	 * @param mixed   $value         Array value
 	 * @param string  $key           Array key
 	 * @param boolean $add_quotation add quotation marks for string values
-	 *
 	 * @return void
 	 */
-	private function escapeArrayCallback(&$value, $key, $add_quotation)
+	private function escapeArrayCallback(&$value, string $key, bool $add_quotation)
 	{
 		if (!$add_quotation) {
 			if (is_bool($value)) {
@@ -1790,10 +1814,9 @@ class Database
 	 *
 	 * @param mixed   $arr           Array with values to be escaped
 	 * @param boolean $add_quotation add quotation marks for string values
-	 *
 	 * @return void
 	 */
-	public function escapeArray(&$arr, $add_quotation = false)
+	public function escapeArray(&$arr, bool $add_quotation = false)
 	{
 		array_walk($arr, [$this, 'escapeArrayCallback'], $add_quotation);
 	}
@@ -1801,13 +1824,14 @@ class Database
 	/**
 	 * Replaces a string in the provided fields of the provided table
 	 *
-	 * @param string $table_name
+	 * @param string $table  Table name
 	 * @param array  $fields List of field names in the provided table
-	 * @param string $search
+	 * @param string $search String to search for
-	 * @param string $replace
+	 * @param string $replace String to replace with
+	 * @return void
 	 * @throws \Exception
 	 */
-	public function replaceInTableFields(string $table_name, array $fields, string $search, string $replace)
+	public function replaceInTableFields(string $table, array $fields, string $search, string $replace)
 	{
 		$search = $this->escape($search);
 		$replace = $this->escape($replace);
@@ -1820,9 +1844,10 @@ class Database
 
 		$upds = implode(', ', $upd);
 
-		$r = $this->e(sprintf("UPDATE %s SET %s;", $table_name, $upds));
+		$r = $this->e(sprintf("UPDATE %s SET %s;", DBA::quoteIdentifier($table), $upds));
+
 		if (!$this->isResult($r)) {
-			throw new \RuntimeException("Failed updating `$table_name`: " . $this->errorMessage());
+			throw new \RuntimeException("Failed updating `$table`: " . $this->errorMessage());
 		}
 	}
 }

src/Database/Definition/DbaDefinition.php

@@ -0,0 +1,126 @@
+<?php
+/**
+ * @copyright Copyright (C) 2010-2022, the Friendica project
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace Friendica\Database\Definition;
+
+use Exception;
+use Friendica\Core\Hook;
+
+/**
+ * Stores the whole database definition
+ */
+class DbaDefinition
+{
+	/** @var string The relative path of the db structure config file */
+	const DBSTRUCTURE_RELATIVE_PATH = '/static/dbstructure.config.php';
+
+	/** @var array The complete DB definition as an array */
+	protected $definition;
+
+	/** @var string */
+	protected $configFile;
+
+	/**
+	 * @param string $basePath The basepath of the dbstructure file (loads relative path in case of null)
+	 *
+	 * @throws Exception in case the config file isn't available/readable
+	 */
+	public function __construct(string $basePath)
+	{
+		$this->configFile = $basePath . static::DBSTRUCTURE_RELATIVE_PATH;
+
+		if (!is_readable($this->configFile)) {
+			throw new Exception('Missing database structure config file static/dbstructure.config.php at basePath=' . $basePath);
+		}
+	}
+
+	/**
+	 * @return array Returns the whole Definition as an array
+	 */
+	public function getAll(): array
+	{
+		return $this->definition;
+	}
+
+	/**
+	 * Truncate field data for the given table
+	 *
+	 * @param string $table Name of the table to load field definitions for
+	 * @param array  $data  data fields
+	 *
+	 * @return array fields for the given
+	 */
+	public function truncateFieldsForTable(string $table, array $data): array
+	{
+		$definition = $this->definition;
+		if (empty($definition[$table])) {
+			return [];
+		}
+
+		$fieldNames = array_keys($definition[$table]['fields']);
+
+		$fields = [];
+
+		// Assign all field that are present in the table
+		foreach ($fieldNames as $field) {
+			if (isset($data[$field])) {
+				// Limit the length of varchar, varbinary, char and binrary fields
+				if (is_string($data[$field]) && preg_match("/char\((\d*)\)/", $definition[$table]['fields'][$field]['type'], $result)) {
+					$data[$field] = mb_substr($data[$field], 0, $result[1]);
+				} elseif (is_string($data[$field]) && preg_match("/binary\((\d*)\)/", $definition[$table]['fields'][$field]['type'], $result)) {
+					$data[$field] = substr($data[$field], 0, $result[1]);
+				}
+				$fields[$field] = $data[$field];
+			}
+		}
+
+		return $fields;
+	}
+
+	/**
+	 * Loads the database structure definition from the static/dbstructure.config.php file.
+	 * On first pass, defines DB_UPDATE_VERSION constant.
+	 *
+	 * @param bool  $withAddonStructure Whether to tack on addons additional tables
+	 *
+	 * @throws Exception in case the definition cannot be found
+	 *
+	 * @see static/dbstructure.config.php
+	 *
+	 * @return self The current instance
+	 */
+	public function load(bool $withAddonStructure = false): self
+	{
+		$definition = require $this->configFile;
+
+		if (!$definition) {
+			throw new Exception('Corrupted database structure config file static/dbstructure.config.php');
+		}
+
+		if ($withAddonStructure) {
+			Hook::callAll('dbstructure_definition', $definition);
+		}
+
+		$this->definition = $definition;
+
+		return $this;
+	}
+}

src/Database/Definition/ViewDefinition.php

@@ -0,0 +1,91 @@
+<?php
+/**
+ * @copyright Copyright (C) 2010-2022, the Friendica project
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace Friendica\Database\Definition;
+
+use Exception;
+use Friendica\Core\Hook;
+
+/**
+ * Stores the whole View definitions
+ */
+class ViewDefinition
+{
+	/** @var string the relative path to the database view config file */
+	const DBSTRUCTURE_RELATIVE_PATH = '/static/dbview.config.php';
+
+	/** @var array The complete view definition as an array */
+	protected $definition;
+
+	/** @var string */
+	protected $configFile;
+
+	/**
+	 * @param string $basePath The basepath of the dbview file (loads relative path in case of null)
+	 *
+	 * @throws Exception in case the config file isn't available/readable
+	 */
+	public function __construct(string $basePath)
+	{
+		$this->configFile = $basePath . static::DBSTRUCTURE_RELATIVE_PATH;
+
+		if (!is_readable($this->configFile)) {
+			throw new Exception('Missing database structure config file static/dbview.config.php at basePath=' . $basePath);
+		}
+	}
+
+	/**
+	 * @return array Returns the whole Definition as an array
+	 */
+	public function getAll(): array
+	{
+		return $this->definition;
+	}
+
+	/**
+	 * Loads the database structure definition from the static/dbview.config.php file.
+	 * On first pass, defines DB_UPDATE_VERSION constant.
+	 *
+	 * @param bool  $withAddonStructure Whether to tack on addons additional tables
+	 *
+	 * @throws Exception in case the definition cannot be found
+	 *
+	 * @see static/dbview.config.php
+	 *
+	 * @return self The current instance
+	 */
+	public function load(bool $withAddonStructure = false): self
+	{
+		$definition = require $this->configFile;
+
+		if (!$definition) {
+			throw new Exception('Corrupted database structure config file static/dbstructure.config.php');
+		}
+
+		if ($withAddonStructure) {
+			Hook::callAll('dbview_definition', $definition);
+		}
+
+		$this->definition = $definition;
+
+		return $this;
+	}
+}

src/Database/PostUpdate.php

@@ -133,7 +133,7 @@ class PostUpdate
 		}
 
 		$max_item_delivery_data = DBA::selectFirst('item-delivery-data', ['iid'], ['queue_count > 0 OR queue_done > 0'], ['order' => ['iid']]);
-		$max_iid = $max_item_delivery_data['iid'];
+		$max_iid = $max_item_delivery_data['iid'] ?? 0;
 
 		Logger::info('Start update1297 with max iid: ' . $max_iid);
 
@@ -538,7 +538,7 @@ class PostUpdate
 	private static function update1347()
 	{
 		// Was the script completed?
-		if (DI::config()->get("system", "post_update_version") >= 1347) {
+		if (DI::config()->get('system', 'post_update_version') >= 1347) {
 			return true;
 		}
 
@@ -547,7 +547,7 @@ class PostUpdate
 			return true;
 		}
 
-		$id = DI::config()->get("system", "post_update_version_1347_id", 0);
+		$id = DI::config()->get('system', 'post_update_version_1347_id', 0);
 
 		Logger::info('Start', ['item' => $id]);
 
@@ -582,12 +582,12 @@ class PostUpdate
 		}
 		DBA::close($items);
 
-		DI::config()->set("system", "post_update_version_1347_id", $id);
+		DI::config()->set('system', 'post_update_version_1347_id', $id);
 
 		Logger::info('Processed', ['rows' => $rows, 'last' => $id]);
 
 		if ($start_id == $id) {
-			DI::config()->set("system", "post_update_version", 1347);
+			DI::config()->set('system', 'post_update_version', 1347);
 			Logger::info('Done');
 			return true;
 		}
@@ -605,11 +605,11 @@ class PostUpdate
 	private static function update1348()
 	{
 		// Was the script completed?
-		if (DI::config()->get("system", "post_update_version") >= 1348) {
+		if (DI::config()->get('system', 'post_update_version') >= 1348) {
 			return true;
 		}
 
-		$id = DI::config()->get("system", "post_update_version_1348_id", 0);
+		$id = DI::config()->get('system', 'post_update_version_1348_id', 0);
 
 		Logger::info('Start', ['contact' => $id]);
 
@@ -635,12 +635,12 @@ class PostUpdate
 		}
 		DBA::close($contacts);
 
-		DI::config()->set("system", "post_update_version_1348_id", $id);
+		DI::config()->set('system', 'post_update_version_1348_id', $id);
 
 		Logger::info('Processed', ['rows' => $rows, 'last' => $id]);
 
 		if ($start_id == $id) {
-			DI::config()->set("system", "post_update_version", 1348);
+			DI::config()->set('system', 'post_update_version', 1348);
 			Logger::info('Done');
 			return true;
 		}
@@ -658,11 +658,11 @@ class PostUpdate
 	private static function update1349()
 	{
 		// Was the script completed?
-		if (DI::config()->get("system", "post_update_version") >= 1349) {
+		if (DI::config()->get('system', 'post_update_version') >= 1349) {
 			return true;
 		}
 
-		$id = DI::config()->get("system", "post_update_version_1349_id", '');
+		$id = DI::config()->get('system', 'post_update_version_1349_id', '');
 
 		Logger::info('Start', ['apcontact' => $id]);
 
@@ -688,12 +688,12 @@ class PostUpdate
 		}
 		DBA::close($apcontacts);
 
-		DI::config()->set("system", "post_update_version_1349_id", $id);
+		DI::config()->set('system', 'post_update_version_1349_id', $id);
 
 		Logger::info('Processed', ['rows' => $rows, 'last' => $id]);
 
 		if ($start_id == $id) {
-			DI::config()->set("system", "post_update_version", 1349);
+			DI::config()->set('system', 'post_update_version', 1349);
 			Logger::info('Done');
 			return true;
 		}
@@ -711,7 +711,7 @@ class PostUpdate
 	private static function update1383()
 	{
 		// Was the script completed?
-		if (DI::config()->get("system", "post_update_version") >= 1383) {
+		if (DI::config()->get('system', 'post_update_version') >= 1383) {
 			return true;
 		}
 
@@ -737,7 +737,7 @@ class PostUpdate
 		}
 		DBA::close($photos);
 
-		DI::config()->set("system", "post_update_version", 1383);
+		DI::config()->set('system', 'post_update_version', 1383);
 		Logger::info('Done', ['deleted' => $deleted]);
 		return true;
 	}
@@ -752,7 +752,7 @@ class PostUpdate
 	private static function update1384()
 	{
 		// Was the script completed?
-		if (DI::config()->get("system", "post_update_version") >= 1384) {
+		if (DI::config()->get('system', 'post_update_version') >= 1384) {
 			return true;
 		}
 
@@ -782,7 +782,7 @@ class PostUpdate
 		Logger::info('Processed', ['rows' => $rows]);
 
 		if ($rows <= 100) {
-			DI::config()->set("system", "post_update_version", 1384);
+			DI::config()->set('system', 'post_update_version', 1384);
 			Logger::info('Done');
 			return true;
 		}
@@ -800,12 +800,12 @@ class PostUpdate
 	private static function update1400()
 	{
 		// Was the script completed?
-		if (DI::config()->get("system", "post_update_version") >= 1400) {
+		if (DI::config()->get('system', 'post_update_version') >= 1400) {
 			return true;
 		}
 
 		if (!DBStructure::existsTable('item')) {
-			DI::config()->set("system", "post_update_version", 1400);
+			DI::config()->set('system', 'post_update_version', 1400);
 			return true;
 		}
 
@@ -829,7 +829,7 @@ class PostUpdate
 		Logger::info('Processed', ['rows' => $rows]);
 
 		if ($rows <= 100) {
-			DI::config()->set("system", "post_update_version", 1400);
+			DI::config()->set('system', 'post_update_version', 1400);
 			Logger::info('Done');
 			return true;
 		}
@@ -847,7 +847,7 @@ class PostUpdate
 	private static function update1424()
 	{
 		// Was the script completed?
-		if (DI::config()->get("system", "post_update_version") >= 1424) {
+		if (DI::config()->get('system', 'post_update_version') >= 1424) {
 			return true;
 		}
 
@@ -871,7 +871,7 @@ class PostUpdate
 		Logger::info('Processed', ['rows' => $rows]);
 
 		if ($rows <= 100) {
-			DI::config()->set("system", "post_update_version", 1424);
+			DI::config()->set('system', 'post_update_version', 1424);
 			Logger::info('Done');
 			return true;
 		}
@@ -889,7 +889,7 @@ class PostUpdate
 	private static function update1425()
 	{
 		// Was the script completed?
-		if (DI::config()->get("system", "post_update_version") >= 1425) {
+		if (DI::config()->get('system', 'post_update_version') >= 1425) {
 			return true;
 		}
 
@@ -918,7 +918,7 @@ class PostUpdate
 		Logger::info('Processed', ['rows' => $rows]);
 
 		if ($rows <= 100) {
-			DI::config()->set("system", "post_update_version", 1425);
+			DI::config()->set('system', 'post_update_version', 1425);
 			Logger::info('Done');
 			return true;
 		}
@@ -936,7 +936,7 @@ class PostUpdate
 	private static function update1426()
 	{
 		// Was the script completed?
-		if (DI::config()->get("system", "post_update_version") >= 1426) {
+		if (DI::config()->get('system', 'post_update_version') >= 1426) {
 			return true;
 		}
 
@@ -965,7 +965,7 @@ class PostUpdate
 		Logger::info('Processed', ['rows' => $rows]);
 
 		if ($rows <= 100) {
-			DI::config()->set("system", "post_update_version", 1426);
+			DI::config()->set('system', 'post_update_version', 1426);
 			Logger::info('Done');
 			return true;
 		}
@@ -983,7 +983,7 @@ class PostUpdate
 	private static function update1427()
 	{
 		// Was the script completed?
-		if (DI::config()->get("system", "post_update_version") >= 1427) {
+		if (DI::config()->get('system', 'post_update_version') >= 1427) {
 			return true;
 		}
 
@@ -1012,7 +1012,7 @@ class PostUpdate
 		Logger::info('Processed', ['rows' => $rows]);
 
 		if ($rows <= 100) {
-			DI::config()->set("system", "post_update_version", 1427);
+			DI::config()->set('system', 'post_update_version', 1427);
 			Logger::info('Done');
 			return true;
 		}

src/Database/View.php

@@ -21,60 +21,18 @@
 
 namespace Friendica\Database;
 
-use Exception;
-use Friendica\Core\Hook;
 use Friendica\DI;
+use Friendica\Util\Writer\ViewDefinitionSqlWriter;
 
 class View
 {
 	/**
-	 * view definition loaded from static/dbview.config.php
+	 * Creates a view
 	 *
-	 * @var array
+	 * @param bool $verbose Whether to show SQL statements
+	 * @param bool $action Whether to execute SQL statements
+	 * @return void
 	 */
-	private static $definition = [];
-
-	/**
-	 * Loads the database structure definition from the static/dbview.config.php file.
-	 * On first pass, defines DB_UPDATE_VERSION constant.
-	 *
-	 * @see static/dbview.config.php
-	 * @param boolean $with_addons_structure Whether to tack on addons additional tables
-	 * @param string  $basePath              The base path of this application
-	 * @return array
-	 * @throws Exception
-	 */
-	public static function definition($basePath = '', $with_addons_structure = true)
-	{
-		if (!self::$definition) {
-			if (empty($basePath)) {
-				$basePath = DI::app()->getBasePath();
-			}
-
-			$filename = $basePath . '/static/dbview.config.php';
-
-			if (!is_readable($filename)) {
-				throw new Exception('Missing database view config file static/dbview.config.php');
-			}
-
-			$definition = require $filename;
-
-			if (!$definition) {
-				throw new Exception('Corrupted database view config file static/dbview.config.php');
-			}
-
-			self::$definition = $definition;
-		} else {
-			$definition = self::$definition;
-		}
-
-		if ($with_addons_structure) {
-			Hook::callAll('dbview_definition', $definition);
-		}
-
-		return $definition;
-	}
-
 	public static function create(bool $verbose, bool $action)
 	{
 		// Delete previously used views that aren't used anymore
@@ -91,66 +49,16 @@ class View
 			}
 		}
 
-		$definition = self::definition();
+		$definition = DI::viewDefinition()->getAll();
 
 		foreach ($definition as $name => $structure) {
-			self::createview($name, $structure, $verbose, $action);
-		}
-	}
-
-	public static function printStructure($basePath)
-	{
-		$database = self::definition($basePath, false);
-
-		foreach ($database as $name => $structure) {
-			echo "--\n";
-			echo "-- VIEW $name\n";
-			echo "--\n";
-			self::createView($name, $structure, true, false);
-
-			echo "\n";
-		}
-	}
-
-	private static function createview($name, $structure, $verbose, $action)
-	{
-		$r = true;
-
-		$sql_rows = [];
-		foreach ($structure["fields"] as $fieldname => $origin) {
-			if (is_string($origin)) {
-				$sql_rows[] = $origin . " AS `" . DBA::escape($fieldname) . "`";
-			} elseif (is_array($origin) && (sizeof($origin) == 2)) {
-				$sql_rows[] = "`" . DBA::escape($origin[0]) . "`.`" . DBA::escape($origin[1]) . "` AS `" . DBA::escape($fieldname) . "`";
-			}
-		}
-
 			if (self::isView($name)) {
-			$sql = sprintf("DROP VIEW IF EXISTS `%s`", DBA::escape($name));
+				DBA::e(sprintf("DROP VIEW IF EXISTS `%s`", DBA::escape($name)));
 			} elseif (self::isTable($name)) {
-			$sql = sprintf("DROP TABLE IF EXISTS `%s`", DBA::escape($name));
+				DBA::e(sprintf("DROP TABLE IF EXISTS `%s`", DBA::escape($name)));
 			}
-
+			DBA::e(ViewDefinitionSqlWriter::createView($name, $structure));
-		if (!empty($sql) && $verbose) {
-			echo $sql . ";\n";
 		}
-
-		if (!empty($sql) && $action) {
-			DBA::e($sql);
-		}
-
-		$sql = sprintf("CREATE VIEW `%s` AS SELECT \n\t", DBA::escape($name)) .
-			implode(",\n\t", $sql_rows) . "\n\t" . $structure['query'];
-	
-		if ($verbose) {
-			echo $sql . ";\n";
-		}
-
-		if ($action) {
-			$r = DBA::e($sql);
-		}
-
-		return $r;
 	}
 
 	/**
@@ -159,9 +67,9 @@ class View
 	 * @param string $view
 	 * @return boolean "true" if it's a view
 	 */
-	private static function isView(string $view)
+	private static function isView(string $view): bool
 	{
-		$status = DBA::selectFirst(['INFORMATION_SCHEMA' => 'TABLES'], ['TABLE_TYPE'],
+		$status = DBA::selectFirst('INFORMATION_SCHEMA.TABLES', ['TABLE_TYPE'],
 			['TABLE_SCHEMA' => DBA::databaseName(), 'TABLE_NAME' => $view]);
 
 		if (empty($status['TABLE_TYPE'])) {
@@ -177,9 +85,9 @@ class View
 	 * @param string $table
 	 * @return boolean "true" if it's a table
 	 */
-	private static function isTable(string $table)
+	private static function isTable(string $table): bool
 	{
-		$status = DBA::selectFirst(['INFORMATION_SCHEMA' => 'TABLES'], ['TABLE_TYPE'],
+		$status = DBA::selectFirst('INFORMATION_SCHEMA.TABLES', ['TABLE_TYPE'],
 			['TABLE_SCHEMA' => DBA::databaseName(), 'TABLE_NAME' => $table]);
 
 		if (empty($status['TABLE_TYPE'])) {

src/Factory/Api/Mastodon/Account.php

@@ -57,12 +57,17 @@ class Account extends BaseFactory
 	 * @throws HTTPException\InternalServerErrorException
 	 * @throws ImagickException|HTTPException\NotFoundException
 	 */
-	public function createFromContactId(int $contactId, $uid = 0): \Friendica\Object\Api\Mastodon\Account
+	public function createFromContactId(int $contactId, int $uid = 0): \Friendica\Object\Api\Mastodon\Account
 	{
 		$contact = Contact::getById($contactId, ['uri-id']);
+
 		if (empty($contact)) {
 			throw new HTTPException\NotFoundException('Contact ' . $contactId . ' not found');
 		}
+		if (empty($contact['uri-id'])) {
+			throw new HTTPException\NotFoundException('Contact ' . $contactId . ' has no uri-id set');
+		}
+
 		return self::createFromUriId($contact['uri-id'], $uid);
 	}
 
@@ -74,7 +79,7 @@ class Account extends BaseFactory
 	 * @throws HTTPException\InternalServerErrorException
 	 * @throws ImagickException|HTTPException\NotFoundException
 	 */
-	public function createFromUriId(int $contactUriId, $uid = 0): \Friendica\Object\Api\Mastodon\Account
+	public function createFromUriId(int $contactUriId, int $uid = 0): \Friendica\Object\Api\Mastodon\Account
 	{
 		$account = DBA::selectFirst('account-user-view', [], ['uri-id' => $contactUriId, 'uid' => [0, $uid]], ['order' => ['id' => true]]);
 		if (empty($account)) {

src/Factory/Api/Mastodon/Status.php

@@ -190,7 +190,7 @@ class Status extends BaseFactory
 	 */
 	public function createFromMailId(int $id): \Friendica\Object\Api\Mastodon\Status
 	{
-		$item = ActivityPub\Transmitter::ItemArrayFromMail($id, true);
+		$item = ActivityPub\Transmitter::getItemArrayFromMail($id, true);
 		if (empty($item)) {
 			$this->mstdnErrorFactory->RecordNotFound();
 		}

src/Factory/Api/Twitter/Status.php

@@ -70,6 +70,7 @@ class Status extends BaseFactory
 	/**
 	 * @param int $uriId Uri-ID of the item
 	 * @param int $uid   Item user
+	 * @param bool $include_entities Whether to include entities
 	 *
 	 * @return \Friendica\Object\Api\Twitter\Status
 	 * @throws HTTPException\InternalServerErrorException
@@ -90,12 +91,13 @@ class Status extends BaseFactory
 	/**
 	 * @param int $uriId Uri-ID of the item
 	 * @param int $uid   Item user
+	 * @param bool $include_entities Whether to include entities
 	 *
 	 * @return \Friendica\Object\Api\Twitter\Status
 	 * @throws HTTPException\InternalServerErrorException
 	 * @throws ImagickException|HTTPException\NotFoundException
 	 */
-	public function createFromUriId(int $uriId, $uid = 0, $include_entities = false): \Friendica\Object\Api\Twitter\Status
+	public function createFromUriId(int $uriId, int $uid = 0, bool $include_entities = false): \Friendica\Object\Api\Twitter\Status
 	{
 		$fields = ['parent-uri-id', 'uri-id', 'uid', 'author-id', 'author-link', 'author-network', 'owner-id', 'causer-id',
 			'starred', 'app', 'title', 'body', 'raw-body', 'created', 'network','post-reason', 'language', 'gravity',
@@ -110,6 +112,7 @@ class Status extends BaseFactory
 	/**
 	 * @param array $item item array
 	 * @param int   $uid  Item user
+	 * @param bool $include_entities Whether to include entities
 	 *
 	 * @return \Friendica\Object\Api\Twitter\Status
 	 * @throws HTTPException\InternalServerErrorException

src/Factory/Api/Twitter/User.php

@@ -51,7 +51,7 @@ class User extends BaseFactory
 	 * @throws HTTPException\InternalServerErrorException
 	 * @throws \ImagickException
 	 */
-	public function createFromContactId(int $contactId, $uid = 0, $skip_status = true, $include_user_entities = true)
+	public function createFromContactId(int $contactId, int $uid = 0, bool $skip_status = true, bool $include_user_entities = true)
 	{
 		$cdata = Contact::getPublicAndUserContactID($contactId, $uid);
 		if (!empty($cdata)) {
@@ -78,7 +78,7 @@ class User extends BaseFactory
 		return new \Friendica\Object\Api\Twitter\User($publicContact, $apcontact, $userContact, $status, $include_user_entities);
 	}
 
-	public function createFromUserId(int $uid, $skip_status = true, $include_user_entities = true)
+	public function createFromUserId(int $uid, bool $skip_status = true, bool $include_user_entities = true)
 	{
 		return $this->createFromContactId(Contact::getPublicIdByUserId($uid), $uid, $skip_status, $include_user_entities);
 	}

src/LegacyModule.php

@@ -57,7 +57,7 @@ class LegacyModule extends BaseModule
 	 * @param string $file_path
 	 * @throws \Exception
 	 */
-	private function setModuleFile($file_path)
+	private function setModuleFile(string $file_path)
 	{
 		if (!is_readable($file_path)) {
 			throw new \Exception(DI::l10n()->t('Legacy module file not found: %s', $file_path));
@@ -87,7 +87,7 @@ class LegacyModule extends BaseModule
 	 * @return string
 	 * @throws \Exception
 	 */
-	private function runModuleFunction(string $function_suffix)
+	private function runModuleFunction(string $function_suffix): string
 	{
 		$function_name = $this->moduleName . '_' . $function_suffix;
 

src/Model/APContact.php

@@ -48,7 +48,7 @@ class APContact
 	 * @param string $addr Address
 	 * @return array webfinger data
 	 */
-	private static function fetchWebfingerData(string $addr)
+	private static function fetchWebfingerData(string $addr): array
 	{
 		$addr_parts = explode('@', $addr);
 		if (count($addr_parts) != 2) {
@@ -116,15 +116,16 @@ class APContact
 	 * @return array profile array
 	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 * @throws \ImagickException
+	 * @todo Rewrite parameter $update to avoid true|false|null (boolean is binary, null adds a third case)
 	 */
-	public static function getByURL($url, $update = null)
+	public static function getByURL(string $url, $update = null): array
 	{
 		if (empty($url) || Network::isUrlBlocked($url)) {
 			Logger::info('Domain is blocked', ['url' => $url]);
 			return [];
 		}
 
-		$fetched_contact = false;
+		$fetched_contact = [];
 
 		if (empty($update)) {
 			if (is_null($update)) {
@@ -220,14 +221,14 @@ class APContact
 		$apcontact['type'] = str_replace('as:', '', JsonLD::fetchElement($compacted, '@type'));
 		$apcontact['following'] = JsonLD::fetchElement($compacted, 'as:following', '@id');
 		$apcontact['followers'] = JsonLD::fetchElement($compacted, 'as:followers', '@id');
-		$apcontact['inbox'] = JsonLD::fetchElement($compacted, 'ldp:inbox', '@id');
+		$apcontact['inbox'] = (JsonLD::fetchElement($compacted, 'ldp:inbox', '@id') ?? '');
 		self::unarchiveInbox($apcontact['inbox'], false);
 
 		$apcontact['outbox'] = JsonLD::fetchElement($compacted, 'as:outbox', '@id');
 
 		$apcontact['sharedinbox'] = '';
 		if (!empty($compacted['as:endpoints'])) {
-			$apcontact['sharedinbox'] = JsonLD::fetchElement($compacted['as:endpoints'], 'as:sharedInbox', '@id');
+			$apcontact['sharedinbox'] = (JsonLD::fetchElement($compacted['as:endpoints'], 'as:sharedInbox', '@id') ?? '');
 			self::unarchiveInbox($apcontact['sharedinbox'], true);
 		}
 
@@ -241,9 +242,10 @@ class APContact
 			$apcontact['name'] = $apcontact['nick'];
 		}
 
-		$apcontact['about'] = HTML::toBBCode(JsonLD::fetchElement($compacted, 'as:summary', '@value'));
+		$apcontact['about'] = HTML::toBBCode(JsonLD::fetchElement($compacted, 'as:summary', '@value') ?? '');
 
 		$ims = JsonLD::fetchElementArray($compacted, 'vcard:hasInstantMessage');
+
 		if (!empty($ims)) {
 			foreach ($ims as $link) {
 				if (substr($link, 0, 5) == 'xmpp:') {
@@ -464,7 +466,7 @@ class APContact
 		}
 
 		// Limit the length on incoming fields
-		$apcontact = DBStructure::getFieldsForTable('apcontact', $apcontact);
+		$apcontact = DI::dbaDefinition()->truncateFieldsForTable('apcontact', $apcontact);
 
 		if (DBA::exists('apcontact', ['url' => $apcontact['url']])) {
 			DBA::update('apcontact', $apcontact, ['url' => $apcontact['url']]);
@@ -525,8 +527,9 @@ class APContact
 	 *
 	 * @param string  $url    inbox url
 	 * @param boolean $shared Shared Inbox
+	 * @return void
 	 */
-	private static function unarchiveInbox($url, $shared)
+	private static function unarchiveInbox(string $url, bool $shared)
 	{
 		if (empty($url)) {
 			return;