diff --git a/mod/allfriends.php b/mod/allfriends.php
index 5234ee8c69..ce648cc25a 100644
--- a/mod/allfriends.php
+++ b/mod/allfriends.php
@@ -60,8 +60,6 @@ function allfriends_content(App $a)
 		//get further details of the contact
 		$contact_details = Model\Contact::getDetailsByURL($rr['url'], $uid, $rr);
 
-		$photo_menu = '';
-
 		$connlnk = '';
 		// $rr[cid] is only available for common contacts. So if the contact is a common one, use contact_photo_menu to generate the photo_menu
 		// If the contact is not common to the user, Connect/Follow' will be added to the photo menu
diff --git a/mod/api.php b/mod/api.php
index 466bd7b34d..4a1db1be55 100644
--- a/mod/api.php
+++ b/mod/api.php
@@ -11,10 +11,8 @@ use Friendica\Module\Login;
 
 require_once 'include/api.php';
 
-function oauth_get_client($request)
+function oauth_get_client(OAuthRequest $request)
 {
-
-
 	$params = $request->get_parameters();
 	$token = $params['oauth_token'];
 
diff --git a/mod/delegate.php b/mod/delegate.php
index b373c20402..4560784515 100644
--- a/mod/delegate.php
+++ b/mod/delegate.php
@@ -17,7 +17,7 @@ require_once 'mod/settings.php';
 
 function delegate_init(App $a)
 {
-	return settings_init($a);
+	settings_init($a);
 }
 
 function delegate_post(App $a)
diff --git a/mod/dfrn_notify.php b/mod/dfrn_notify.php
index c675258107..41b7684ac6 100644
--- a/mod/dfrn_notify.php
+++ b/mod/dfrn_notify.php
@@ -253,7 +253,6 @@ function dfrn_notify_content(App $a) {
 		 */
 
 		$dfrn_id = Strings::escapeTags(trim($_GET['dfrn_id']));
-		$dfrn_version = (float) $_GET['dfrn_version'];
 		$rino_remote = (!empty($_GET['rino']) ? intval($_GET['rino']) : 0);
 		$type = "";
 		$last_update = "";
diff --git a/mod/dfrn_poll.php b/mod/dfrn_poll.php
index 928690060f..5b72c0bf94 100644
--- a/mod/dfrn_poll.php
+++ b/mod/dfrn_poll.php
@@ -28,7 +28,6 @@ function dfrn_poll_init(App $a)
 	$challenge       = defaults($_GET, 'challenge'      , '');
 	$sec             = defaults($_GET, 'sec'            , '');
 	$dfrn_version    = (float) defaults($_GET, 'dfrn_version'   , 2.0);
-	$perm            = defaults($_GET, 'perm'           , 'r');
 	$quiet			 = !empty($_GET['quiet']);
 
 	// Possibly it is an OStatus compatible server that requests a user feed
@@ -319,15 +318,12 @@ function dfrn_poll_post(App $a)
 	switch ($direction) {
 		case -1:
 			$sql_extra = sprintf(" AND `issued-id` = '%s' ", DBA::escape($dfrn_id));
-			$my_id = $dfrn_id;
 			break;
 		case 0:
 			$sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", DBA::escape($dfrn_id));
-			$my_id = '1:' . $dfrn_id;
 			break;
 		case 1:
 			$sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", DBA::escape($dfrn_id));
-			$my_id = '0:' . $dfrn_id;
 			break;
 		default:
 			$a->internalRedirect();
@@ -420,7 +416,7 @@ function dfrn_poll_content(App $a)
 		DBA::delete('challenge', ["`expire` < ?", time()]);
 
 		if ($type !== 'profile') {
-			$r = q("INSERT INTO `challenge` ( `challenge`, `dfrn-id`, `expire` , `type`, `last_update` )
+			q("INSERT INTO `challenge` ( `challenge`, `dfrn-id`, `expire` , `type`, `last_update` )
 				VALUES( '%s', '%s', '%s', '%s', '%s' ) ",
 				DBA::escape($hash),
 				DBA::escape($dfrn_id),
diff --git a/mod/dfrn_request.php b/mod/dfrn_request.php
index 7b446b5ead..7c76af1b6a 100644
--- a/mod/dfrn_request.php
+++ b/mod/dfrn_request.php
@@ -188,7 +188,7 @@ function dfrn_request_post(App $a)
 				}
 
 				if (strlen($dfrn_request) && strlen($confirm_key)) {
-					$s = Network::fetchUrl($dfrn_request . '?confirm_key=' . $confirm_key);
+					Network::fetchUrl($dfrn_request . '?confirm_key=' . $confirm_key);
 				}
 
 				// (ignore reply, nothing we can do it failed)
@@ -230,7 +230,6 @@ function dfrn_request_post(App $a)
 	}
 
 	$nickname       = $a->profile['nickname'];
-	$notify_flags   = $a->profile['notify-flags'];
 	$uid            = $a->profile['uid'];
 	$maxreq         = intval($a->profile['maxreq']);
 	$contact_record = null;
@@ -271,8 +270,6 @@ function dfrn_request_post(App $a)
 			}
 		}
 
-		$real_name = !empty($_POST['realname']) ? Strings::escapeTags(trim($_POST['realname'])) : '';
-
 		$url = trim($_POST['dfrn_url']);
 		if (!strlen($url)) {
 			notice(L10n::t("Invalid locator") . EOL);
@@ -420,7 +417,7 @@ function dfrn_request_post(App $a)
 			$hash = Strings::getRandomHex() . (string) time();   // Generate a confirm_key
 
 			if (is_array($contact_record)) {
-				$ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `note`, `hash`, `datetime`)
+				q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `note`, `hash`, `datetime`)
 					VALUES ( %d, %d, 1, %d, '%s', '%s', '%s' )",
 					intval($uid),
 					intval($contact_record['id']),
@@ -586,7 +583,7 @@ function dfrn_request_content(App $a)
 				// If we are auto_confirming, this record will have already been nuked
 				// in dfrn_confirm_post()
 
-				$r = q("UPDATE `intro` SET `blocked` = 0 WHERE `hash` = '%s'",
+				q("UPDATE `intro` SET `blocked` = 0 WHERE `hash` = '%s'",
 					DBA::escape($_GET['confirm_key'])
 				);
 			}
@@ -657,6 +654,4 @@ function dfrn_request_content(App $a)
 		]);
 		return $o;
 	}
-
-	return; // Somebody is fishing.
 }
diff --git a/mod/directory.php b/mod/directory.php
index 0a37c1dc04..c32cf5dbb8 100644
--- a/mod/directory.php
+++ b/mod/directory.php
@@ -112,7 +112,6 @@ function directory_content(App $a)
 		}
 
 		while ($rr = DBA::fetch($r)) {
-			$itemurl= '';
 
 			$itemurl = (($rr['addr'] != "") ? $rr['addr'] : $rr['profile_url']);
 
diff --git a/mod/display.php b/mod/display.php
index dc43e08d34..3922c83f35 100644
--- a/mod/display.php
+++ b/mod/display.php
@@ -35,7 +35,6 @@ function display_init(App $a)
 	}
 
 	$nick = (($a->argc > 1) ? $a->argv[1] : '');
-	$profiledata = [];
 
 	if ($a->argc == 3) {
 		if (substr($a->argv[2], -5) == '.atom') {
@@ -157,7 +156,6 @@ function display_fetchauthor($a, $item)
 	}
 
 	if (!$skip) {
-		$author = "";
 		preg_match("/author='(.*?)'/ism", $attributes, $matches);
 		if (!empty($matches[1])) {
 			$profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
@@ -166,7 +164,6 @@ function display_fetchauthor($a, $item)
 		if (!empty($matches[1])) {
 			$profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
 		}
-		$profile = "";
 		preg_match("/profile='(.*?)'/ism", $attributes, $matches);
 		if (!empty($matches[1])) {
 			$profiledata["url"] = $matches[1];
@@ -175,7 +172,6 @@ function display_fetchauthor($a, $item)
 		if (!empty($matches[1])) {
 			$profiledata["url"] = $matches[1];
 		}
-		$avatar = "";
 		preg_match("/avatar='(.*?)'/ism", $attributes, $matches);
 		if (!empty($matches[1])) {
 			$profiledata["photo"] = $matches[1];
diff --git a/mod/editpost.php b/mod/editpost.php
index bf103cf23c..c1c0d16d7f 100644
--- a/mod/editpost.php
+++ b/mod/editpost.php
@@ -2,9 +2,9 @@
 /**
  * @file mod/editpost.php
  */
+
 use Friendica\App;
 use Friendica\Content\Feature;
-use Friendica\Core\Config;
 use Friendica\Core\Hook;
 use Friendica\Core\L10n;
 use Friendica\Core\Renderer;
@@ -63,25 +63,6 @@ function editpost_content(App $a)
 	$jotplugins = '';
 	$jotnets = '';
 
-	$mail_disabled = ((function_exists('imap_open') && !Config::get('system', 'imap_disabled')) ? 0 : 1);
-
-	$mail_enabled = false;
-	$pubmail_enabled = false;
-
-	if (!$mail_disabled) {
-		$r = q("SELECT * FROM `mailacct` WHERE `uid` = %d AND `server` != '' LIMIT 1",
-			intval(local_user())
-		);
-
-		if (DBA::isResult($r)) {
-			$mail_enabled = true;
-
-			if (intval($r[0]['pubmail'])) {
-				$pubmail_enabled = true;
-			}
-		}
-	}
-
 	Hook::callAll('jot_tool', $jotplugins);
 
 	$tpl = Renderer::getMarkupTemplate("jot.tpl");
diff --git a/mod/events.php b/mod/events.php
index 60fa039221..008cf643ce 100644
--- a/mod/events.php
+++ b/mod/events.php
@@ -213,14 +213,14 @@ function events_content(App $a)
 	}
 
 	if (($a->argc > 2) && ($a->argv[1] === 'ignore') && intval($a->argv[2])) {
-		$r = q("UPDATE `event` SET `ignore` = 1 WHERE `id` = %d AND `uid` = %d",
+		q("UPDATE `event` SET `ignore` = 1 WHERE `id` = %d AND `uid` = %d",
 			intval($a->argv[2]),
 			intval(local_user())
 		);
 	}
 
 	if (($a->argc > 2) && ($a->argv[1] === 'unignore') && intval($a->argv[2])) {
-		$r = q("UPDATE `event` SET `ignore` = 0 WHERE `id` = %d AND `uid` = %d",
+		q("UPDATE `event` SET `ignore` = 0 WHERE `id` = %d AND `uid` = %d",
 			intval($a->argv[2]),
 			intval(local_user())
 		);
@@ -300,21 +300,6 @@ function events_content(App $a)
 			$y = 2100;
 		}
 
-		$nextyear = $y;
-		$nextmonth = $m + 1;
-		if ($nextmonth > 12) {
-			$nextmonth = 1;
-			$nextyear ++;
-		}
-
-		$prevyear = $y;
-		if ($m > 1) {
-			$prevmonth = $m - 1;
-		} else {
-			$prevmonth = 12;
-			$prevyear --;
-		}
-
 		$dim    = Temporal::getDaysInMonth($y, $m);
 		$start  = sprintf('%d-%d-%d %d:%d:%d', $y, $m, 1, 0, 0, 0);
 		$finish = sprintf('%d-%d-%d %d:%d:%d', $y, $m, $dim, 23, 59, 59);
@@ -526,7 +511,7 @@ function events_content(App $a)
 			'$s_text' => L10n::t('Event Starts:') . ' <span class="required" title="' . L10n::t('Required') . '">*</span>',
 			'$s_dsel' => Temporal::getDateTimeField(
 				new DateTime(),
-				DateTime::createFromFormat('Y', $syear+5),
+				DateTime::createFromFormat('Y', intval($syear) + 5),
 				DateTime::createFromFormat('Y-m-d H:i', "$syear-$smonth-$sday $shour:$sminute"),
 				L10n::t('Event Starts:'),
 				'start_text',
@@ -541,7 +526,7 @@ function events_content(App $a)
 			'$f_text' => L10n::t('Event Finishes:'),
 			'$f_dsel' => Temporal::getDateTimeField(
 				new DateTime(),
-				DateTime::createFromFormat('Y', $fyear+5),
+				DateTime::createFromFormat('Y', intval($fyear) + 5),
 				DateTime::createFromFormat('Y-m-d H:i', "$fyear-$fmonth-$fday $fhour:$fminute"),
 				L10n::t('Event Finishes:'),
 				'finish_text',
diff --git a/mod/fbrowser.php b/mod/fbrowser.php
index 3401359052..d302383157 100644
--- a/mod/fbrowser.php
+++ b/mod/fbrowser.php
@@ -28,10 +28,6 @@ function fbrowser_content(App $a)
 	}
 
 	$template_file = "filebrowser.tpl";
-	$mode = "";
-	if (!empty($_GET['mode'])) {
-		$mode  = "?mode=".$_GET['mode'];
-	}
 
 	switch ($a->argv[1]) {
 		case "image":
@@ -55,12 +51,11 @@ function fbrowser_content(App $a)
 				$albums = array_map("_map_folder1", $albums);
 			}
 
-			$album = "";
-			if ($a->argc==3) {
+			if ($a->argc == 3) {
 				$album = hex2bin($a->argv[2]);
 				$sql_extra = sprintf("AND `album` = '%s' ", DBA::escape($album));
 				$sql_extra2 = "";
-				$path[]=[$a->argv[2], $album];
+				$path[] = [$a->argv[2], $album];
 			}
 
 			$r = q("SELECT `resource-id`, ANY_VALUE(`id`) AS `id`, ANY_VALUE(`filename`) AS `filename`, ANY_VALUE(`type`) AS `type`,
@@ -118,8 +113,7 @@ function fbrowser_content(App $a)
 
 				function _map_files2($rr)
 				{
-					$a = \get_app();
-					list($m1,$m2) = explode("/", $rr['filetype']);
+					list($m1, $m2) = explode("/", $rr['filetype']);
 					$filetype = ( (file_exists("images/icons/$m1.png"))?$m1:"zip");
 					$filename_e = $rr['filename'];
 
diff --git a/mod/fsuggest.php b/mod/fsuggest.php
index 2195f455af..e84a42734c 100644
--- a/mod/fsuggest.php
+++ b/mod/fsuggest.php
@@ -45,7 +45,7 @@ function fsuggest_post(App $a)
 			intval(local_user())
 		);
 		if (DBA::isResult($r)) {
-			$x = q("INSERT INTO `fsuggest` ( `uid`,`cid`,`name`,`url`,`request`,`photo`,`note`,`created`)
+			q("INSERT INTO `fsuggest` ( `uid`,`cid`,`name`,`url`,`request`,`photo`,`note`,`created`)
 				VALUES ( %d, %d, '%s','%s','%s','%s','%s','%s')",
 				intval(local_user()),
 				intval($contact_id),
diff --git a/mod/home.php b/mod/home.php
index 8e53c24f3d..34f6d43683 100644
--- a/mod/home.php
+++ b/mod/home.php
@@ -61,7 +61,4 @@ function home_content(App $a) {
 		'$login' => $login,
 		'$content' => $content
 	]);
-
-	return $o;
-
 }}
diff --git a/mod/hovercard.php b/mod/hovercard.php
index f71977f074..047502fc34 100644
--- a/mod/hovercard.php
+++ b/mod/hovercard.php
@@ -47,7 +47,6 @@ function hovercard_content()
 	// If a contact is connected the url is internally changed to 'redir/CID'. We need the pure url to search for
 	// the contact. So we strip out the contact id from the internal url and look in the contact table for
 	// the real url (nurl)
-	$cid = 0;
 	if (strpos($profileurl, 'redir/') === 0) {
 		$cid = intval(substr($profileurl, 6));
 		$remote_contact = DBA::selectFirst('contact', ['nurl'], ['id' => $cid]);
diff --git a/mod/item.php b/mod/item.php
index 576ad09d6d..6276ba4d1e 100644
--- a/mod/item.php
+++ b/mod/item.php
@@ -125,8 +125,6 @@ function item_post(App $a) {
 		$parent = $parent_item['id'];
 		$parent_user = $parent_item['uid'];
 
-		$parent_contact = Contact::getDetailsByURL($parent_item["author-link"]);
-
 		$objecttype = ACTIVITY_OBJ_COMMENT;
 	}
 
@@ -386,7 +384,7 @@ function item_post(App $a) {
 				continue;
 			}
 
-			$success = handle_tag($a, $body, $inform, $str_tags, local_user() ? local_user() : $profile_uid, $tag, $network);
+			$success = handle_tag($body, $inform, $str_tags, local_user() ? local_user() : $profile_uid, $tag, $network);
 			if ($success['replaced']) {
 				$tagged[] = $tag;
 			}
@@ -723,8 +721,6 @@ function item_post(App $a) {
 			$a->internalRedirect($return_path);
 		}
 		exit();
-	} else {
-		$post_id = 0;
 	}
 
 	unset($datarray['edit']);
@@ -924,11 +920,10 @@ function item_content(App $a)
  * @throws ImagickException
  * @throws \Friendica\Network\HTTPException\InternalServerErrorException
  */
-function handle_tag(App $a, &$body, &$inform, &$str_tags, $profile_uid, $tag, $network = "")
+function handle_tag(&$body, &$inform, &$str_tags, $profile_uid, $tag, $network = "")
 {
 	$replaced = false;
 	$r = null;
-	$tag_type = '@';
 
 	//is it a person tag?
 	if ((strpos($tag, '@') === 0) || (strpos($tag, '!') === 0)) {
@@ -964,7 +959,6 @@ function handle_tag(App $a, &$body, &$inform, &$str_tags, $profile_uid, $tag, $n
 			return $replaced;
 		}
 
-		$stat = false;
 		//get the person's name
 		$name = substr($tag, 1);
 
diff --git a/mod/lostpass.php b/mod/lostpass.php
index cb2dd3ca3c..548cea185c 100644
--- a/mod/lostpass.php
+++ b/mod/lostpass.php
@@ -81,7 +81,6 @@ function lostpass_post(App $a)
 
 function lostpass_content(App $a)
 {
-	$o = '';
 	if ($a->argc > 1) {
 		$pwdreset_token = $a->argv[1];
 
@@ -127,7 +126,6 @@ function lostpass_form()
 function lostpass_generate_password($user)
 {
 	$o = '';
-	$a = \get_app();
 
 	$new_password = User::generateNewPassword();
 	$result = User::updatePassword($user['uid'], $new_password);
diff --git a/mod/message.php b/mod/message.php
index 3f1ec6a2e6..3ff84a1e66 100644
--- a/mod/message.php
+++ b/mod/message.php
@@ -185,7 +185,6 @@ function message_content(App $a)
 			);
 			if (DBA::isResult($r)) {
 				$parent = $r[0]['parent-uri'];
-				$convid = $r[0]['convid'];
 
 				if (DBA::delete('mail', ['parent-uri' => $parent, 'uid' => local_user()])) {
 					info(L10n::t('Conversation removed.') . EOL);
@@ -230,7 +229,6 @@ function message_content(App $a)
 
 			if (DBA::isResult($r)) {
 				$prename = $r[0]['name'];
-				$preurl = $r[0]['url'];
 				$preid = $r[0]['id'];
 				$preselect = [$preid];
 			} else {
diff --git a/mod/network.php b/mod/network.php
index a71447e5e5..e05f9814a0 100644
--- a/mod/network.php
+++ b/mod/network.php
@@ -314,7 +314,7 @@ function networkSetSeen($condition)
 	$unseen = Item::exists($condition);
 
 	if ($unseen) {
-		$r = Item::update(['unseen' => false], $condition);
+		Item::update(['unseen' => false], $condition);
 	}
 }
 
@@ -407,12 +407,6 @@ function networkFlatView(App $a, $update = 0)
 	// Rawmode is used for fetching new content at the end of the page
 	$rawmode = (isset($_GET['mode']) && ($_GET['mode'] == 'raw'));
 
-	if (isset($_GET['last_id'])) {
-		$last_id = intval($_GET['last_id']);
-	} else {
-		$last_id = 0;
-	}
-
 	$o = '';
 
 	$file = defaults($_GET, 'file', '');
@@ -449,8 +443,7 @@ function networkFlatView(App $a, $update = 0)
 
 	$pager = new Pager($a->query_string);
 
-	/// @TODO Figure out why this variable is unused
-	$pager_sql = networkPager($a, $pager, $update);
+	networkPager($a, $pager, $update);
 
 	if (strlen($file)) {
 		$condition = ["`term` = ? AND `otype` = ? AND `type` = ? AND `uid` = ?",
@@ -621,7 +614,6 @@ function networkThreadedView(App $a, $update, $parent)
 	$sql_extra3 = '';
 	$sql_table = '`thread`';
 	$sql_parent = '`iid`';
-	$sql_order = '';
 
 	if ($update) {
 		$sql_table = '`item`';
diff --git a/mod/notes.php b/mod/notes.php
index 6ecc819240..fdb12d6cc5 100644
--- a/mod/notes.php
+++ b/mod/notes.php
@@ -17,13 +17,7 @@ function notes_init(App $a)
 		return;
 	}
 
-	$profile = 0;
-
-	$which = $a->user['nickname'];
-
 	Nav::setSelected('home');
-
-	//Profile::load($a, $which, $profile);
 }
 
 
diff --git a/mod/photos.php b/mod/photos.php
index 3a92774654..31b026f899 100644
--- a/mod/photos.php
+++ b/mod/photos.php
@@ -518,7 +518,6 @@ function photos_post(App $a)
 							$taginfo[] = [$newname, $profile, $salmon];
 						} else {
 							$newname = $name;
-							$alias = '';
 							$tagcid = 0;
 
 							if (strrpos($newname, '+')) {
@@ -655,7 +654,7 @@ function photos_post(App $a)
 						. System::baseUrl() . '/photos/' . $owner_record['nickname'] . '/image/' . $photo['resource-id'] . '</id>';
 					$arr['target'] .= '<link>' . XML::escape('<link rel="alternate" type="text/html" href="' . System::baseUrl() . '/photos/' . $owner_record['nickname'] . '/image/' . $photo['resource-id'] . '" />' . "\n" . '<link rel="preview" type="'.$photo['type'].'" href="' . System::baseUrl() . "/photo/" . $photo['resource-id'] . '-' . $best . '.' . $ext . '" />') . '</link></target>';
 
-					$item_id = Item::insert($arr);
+					Item::insert($arr);
 				}
 			}
 		}
diff --git a/mod/profile.php b/mod/profile.php
index 858748bb82..8a21e24dc1 100644
--- a/mod/profile.php
+++ b/mod/profile.php
@@ -130,7 +130,6 @@ function profile_content(App $a, $update = 0)
 	$groups = [];
 	$remote_cid = null;
 
-	$tab = 'posts';
 	$o = '';
 
 	if ($update) {
@@ -310,8 +309,7 @@ function profile_content(App $a, $update = 0)
 	if ($is_owner) {
 		$unseen = Item::exists(['wall' => true, 'unseen' => true, 'uid' => local_user()]);
 		if ($unseen) {
-			$r = Item::update(['unseen' => false],
-					['wall' => true, 'unseen' => true, 'uid' => local_user()]);
+			Item::update(['unseen' => false], ['wall' => true, 'unseen' => true, 'uid' => local_user()]);
 		}
 	}
 
diff --git a/mod/profile_photo.php b/mod/profile_photo.php
index b802050b63..a0faa40cf5 100644
--- a/mod/profile_photo.php
+++ b/mod/profile_photo.php
@@ -109,11 +109,11 @@ function profile_photo_post(App $a)
 				// If setting for the default profile, unset the profile photo flag from any other photos I own
 
 				if ($is_default_profile) {
-					$r = q("UPDATE `photo` SET `profile` = 0 WHERE `profile` = 1 AND `resource-id` != '%s' AND `uid` = %d",
+					q("UPDATE `photo` SET `profile` = 0 WHERE `profile` = 1 AND `resource-id` != '%s' AND `uid` = %d",
 						DBA::escape($base_image['resource-id']), intval(local_user())
 					);
 				} else {
-					$r = q("update profile set photo = '%s', thumb = '%s' where id = %d and uid = %d",
+					q("update profile set photo = '%s', thumb = '%s' where id = %d and uid = %d",
 						DBA::escape(System::baseUrl() . '/photo/' . $base_image['resource-id'] . '-4.' . $Image->getExt()),
 						DBA::escape(System::baseUrl() . '/photo/' . $base_image['resource-id'] . '-5.' . $Image->getExt()),
 						intval($_REQUEST['profile']), intval(local_user())
@@ -215,9 +215,9 @@ function profile_photo_content(App $a)
 		// set an already uloaded photo as profile photo
 		// if photo is in 'Profile Photos', change it in db
 		if (($r[0]['album'] == L10n::t('Profile Photos')) && ($havescale)) {
-			$r = q("UPDATE `photo` SET `profile`=0 WHERE `profile`=1 AND `uid`=%d", intval(local_user()));
+			q("UPDATE `photo` SET `profile`=0 WHERE `profile`=1 AND `uid`=%d", intval(local_user()));
 
-			$r = q("UPDATE `photo` SET `profile`=1 WHERE `uid` = %d AND `resource-id` = '%s'", intval(local_user()),
+			q("UPDATE `photo` SET `profile`=1 WHERE `uid` = %d AND `resource-id` = '%s'", intval(local_user()),
 				DBA::escape($resource_id)
 			);
 
@@ -275,8 +275,6 @@ function profile_photo_content(App $a)
 		]);
 		return $o;
 	}
-
-	return; // NOTREACHED
 }
 
 function profile_photo_crop_ui_head(App $a, Image $image)
diff --git a/mod/profiles.php b/mod/profiles.php
index 74a3d91f07..b56a7911d3 100644
--- a/mod/profiles.php
+++ b/mod/profiles.php
@@ -48,12 +48,12 @@ function profiles_init(App $a) {
 
 		// move every contact using this profile as their default to the user default
 
-		$r = q("UPDATE `contact` SET `profile-id` = (SELECT `profile`.`id` AS `profile-id` FROM `profile` WHERE `profile`.`is-default` = 1 AND `profile`.`uid` = %d LIMIT 1) WHERE `profile-id` = %d AND `uid` = %d ",
+		q("UPDATE `contact` SET `profile-id` = (SELECT `profile`.`id` AS `profile-id` FROM `profile` WHERE `profile`.`is-default` = 1 AND `profile`.`uid` = %d LIMIT 1) WHERE `profile-id` = %d AND `uid` = %d ",
 			intval(local_user()),
 			intval($a->argv[2]),
 			intval(local_user())
 		);
-		$r = q("DELETE FROM `profile` WHERE `id` = %d AND `uid` = %d",
+		q("DELETE FROM `profile` WHERE `id` = %d AND `uid` = %d",
 			intval($a->argv[2]),
 			intval(local_user())
 		);
@@ -79,7 +79,7 @@ function profiles_init(App $a) {
 		$r1 = q("SELECT `name`, `photo`, `thumb` FROM `profile` WHERE `uid` = %d AND `is-default` = 1 LIMIT 1",
 			intval(local_user()));
 
-		$r2 = q("INSERT INTO `profile` (`uid` , `profile-name` , `name`, `photo`, `thumb`)
+		q("INSERT INTO `profile` (`uid` , `profile-name` , `name`, `photo`, `thumb`)
 			VALUES ( %d, '%s', '%s', '%s', '%s' )",
 			intval(local_user()),
 			DBA::escape($name),
@@ -118,7 +118,6 @@ function profiles_init(App $a) {
 		if(! DBA::isResult($r1)) {
 			notice(L10n::t('Profile unavailable to clone.') . EOL);
 			exit();
-			return;
 		}
 		unset($r1[0]['id']);
 		$r1[0]['is-default'] = 0;
@@ -151,7 +150,6 @@ function profiles_init(App $a) {
 		if (! DBA::isResult($r)) {
 			notice(L10n::t('Profile not found.') . EOL);
 			exit();
-			return;
 		}
 
 		Profile::load($a, $a->user['nickname'], $r[0]['id']);
@@ -342,54 +340,42 @@ function profiles_post(App $a) {
 		PConfig::set(local_user(), 'system', 'detailled_profile', (($_POST['detailled_profile'] == 1) ? 1: 0));
 
 		$changes = [];
-		$value = '';
 		if ($is_default) {
 			if ($marital != $orig[0]['marital']) {
 				$changes[] = '[color=#ff0000]&hearts;[/color] ' . L10n::t('Marital Status');
-				$value = $marital;
 			}
 			if ($withchanged) {
 				$changes[] = '[color=#ff0000]&hearts;[/color] ' . L10n::t('Romantic Partner');
-				$value = strip_tags($with);
 			}
 			if ($likes != $orig[0]['likes']) {
 				$changes[] = L10n::t('Likes');
-				$value = $likes;
 			}
 			if ($dislikes != $orig[0]['dislikes']) {
 				$changes[] = L10n::t('Dislikes');
-				$value = $dislikes;
 			}
 			if ($work != $orig[0]['work']) {
 				$changes[] = L10n::t('Work/Employment');
 			}
 			if ($religion != $orig[0]['religion']) {
 				$changes[] = L10n::t('Religion');
-				$value = $religion;
 			}
 			if ($politic != $orig[0]['politic']) {
 				$changes[] = L10n::t('Political Views');
-				$value = $politic;
 			}
 			if ($gender != $orig[0]['gender']) {
 				$changes[] = L10n::t('Gender');
-				$value = $gender;
 			}
 			if ($sexual != $orig[0]['sexual']) {
 				$changes[] = L10n::t('Sexual Preference');
-				$value = $sexual;
 			}
 			if ($xmpp != $orig[0]['xmpp']) {
 				$changes[] = L10n::t('XMPP');
-				$value = $xmpp;
 			}
 			if ($homepage != $orig[0]['homepage']) {
 				$changes[] = L10n::t('Homepage');
-				$value = $homepage;
 			}
 			if ($interest != $orig[0]['interest']) {
 				$changes[] = L10n::t('Interests');
-				$value = $interest;
 			}
 			if ($address != $orig[0]['address']) {
 				$changes[] = L10n::t('Address');
@@ -400,9 +386,6 @@ function profiles_post(App $a) {
 			if ($locality != $orig[0]['locality'] || $region != $orig[0]['region']
 				|| $country_name != $orig[0]['country-name']) {
  				$changes[] = L10n::t('Location');
-				$comma1 = ((($locality) && ($region || $country_name)) ? ', ' : ' ');
-				$comma2 = (($region && $country_name) ? ', ' : '');
-				$value = $locality . $comma1 . $region . $comma2 . $country_name;
 			}
 		}
 
@@ -487,7 +470,7 @@ function profiles_post(App $a) {
 
 		if ($is_default) {
 			if ($namechanged) {
-				$r = q("UPDATE `user` set `username` = '%s' where `uid` = %d",
+				q("UPDATE `user` set `username` = '%s' where `uid` = %d",
 					DBA::escape($name),
 					intval(local_user())
 				);
diff --git a/mod/pubsub.php b/mod/pubsub.php
index 9b5bf1209e..c5744f399b 100644
--- a/mod/pubsub.php
+++ b/mod/pubsub.php
@@ -36,7 +36,6 @@ function pubsub_init(App $a)
 		$hub_mode      = Strings::escapeTags(trim(defaults($_GET, 'hub_mode', '')));
 		$hub_topic     = Strings::escapeTags(trim(defaults($_GET, 'hub_topic', '')));
 		$hub_challenge = Strings::escapeTags(trim(defaults($_GET, 'hub_challenge', '')));
-		$hub_lease     = Strings::escapeTags(trim(defaults($_GET, 'hub_lease_seconds', '')));
 		$hub_verify    = Strings::escapeTags(trim(defaults($_GET, 'hub_verify_token', '')));
 
 		Logger::log('Subscription from ' . $_SERVER['REMOTE_ADDR'] . ' Mode: ' . $hub_mode . ' Nick: ' . $nick);
diff --git a/mod/pubsubhubbub.php b/mod/pubsubhubbub.php
index 843406fe6f..342facd107 100644
--- a/mod/pubsubhubbub.php
+++ b/mod/pubsubhubbub.php
@@ -33,7 +33,6 @@ function pubsubhubbub_init(App $a) {
 	if ($_SERVER['REQUEST_METHOD'] === 'POST') {
 		$hub_mode = post_var('hub_mode');
 		$hub_callback = post_var('hub_callback');
-		$hub_verify = post_var('hub_verify');
 		$hub_verify_token = post_var('hub_verify_token');
 		$hub_secret = post_var('hub_secret');
 		$hub_topic = post_var('hub_topic');
diff --git a/mod/register.php b/mod/register.php
index 0125ae417e..e69315a33a 100644
--- a/mod/register.php
+++ b/mod/register.php
@@ -22,9 +22,6 @@ function register_post(App $a)
 {
 	BaseModule::checkFormSecurityTokenRedirectOnError('/register', 'register');
 
-	$verified = 0;
-	$blocked  = 1;
-
 	$arr = ['post' => $_POST];
 	Hook::callAll('register_post', $arr);
 
diff --git a/mod/repair_ostatus.php b/mod/repair_ostatus.php
index 5a6afd9fb4..51a6aadaad 100644
--- a/mod/repair_ostatus.php
+++ b/mod/repair_ostatus.php
@@ -57,7 +57,7 @@ function repair_ostatus_content(App $a) {
 
 	$o .= "<p>".L10n::t("Keep this window open until done.")."</p>";
 
-	$result = Contact::createFromProbe($uid, $r[0]["url"], true);
+	Contact::createFromProbe($uid, $r[0]["url"], true);
 
 	$a->page['htmlhead'] = '<meta http-equiv="refresh" content="1; URL='.System::baseUrl().'/repair_ostatus?counter='.$counter.'">';
 
diff --git a/mod/salmon.php b/mod/salmon.php
index eef2510762..536a4516ce 100644
--- a/mod/salmon.php
+++ b/mod/salmon.php
@@ -23,7 +23,6 @@ function salmon_post(App $a, $xml = '') {
 	Logger::log('new salmon ' . $xml, Logger::DATA);
 
 	$nick       = (($a->argc > 1) ? Strings::escapeTags(trim($a->argv[1])) : '');
-	$mentions   = (($a->argc > 2 && $a->argv[2] === 'mention') ? true : false);
 
 	$r = q("SELECT * FROM `user` WHERE `nickname` = '%s' AND `account_expired` = 0 AND `account_removed` = 0 LIMIT 1",
 		DBA::escape($nick)
diff --git a/mod/settings.php b/mod/settings.php
index 14c0cc64d7..567270c6ea 100644
--- a/mod/settings.php
+++ b/mod/settings.php
@@ -367,7 +367,7 @@ function settings_post(App $a)
 		}
 		Theme::install($theme);
 
-		$r = q("UPDATE `user` SET `theme` = '%s' WHERE `uid` = %d",
+		q("UPDATE `user` SET `theme` = '%s' WHERE `uid` = %d",
 				DBA::escape($theme),
 				intval(local_user())
 		);
@@ -484,8 +484,6 @@ function settings_post(App $a)
 		$page_flags = Contact::PAGE_COMMUNITY;
 	}
 
-	$email_changed = false;
-
 	$err = '';
 
 	if ($username != $a->user['username']) {
@@ -498,7 +496,6 @@ function settings_post(App $a)
 	}
 
 	if ($email != $a->user['email']) {
-		$email_changed = true;
 		//  check for the correct password
 		if (!User::authenticate(intval(local_user()), $_POST['mpassword'])) {
 			$err .= L10n::t('Wrong Password') . EOL;
@@ -611,7 +608,7 @@ function settings_post(App $a)
 	// clear session language
 	unset($_SESSION['language']);
 
-	$r = q("UPDATE `profile`
+	q("UPDATE `profile`
 		SET `publish` = %d,
 		`name` = '%s',
 		`net-publish` = %d,
diff --git a/mod/videos.php b/mod/videos.php
index 408e2acaa6..df0fb23756 100644
--- a/mod/videos.php
+++ b/mod/videos.php
@@ -31,8 +31,6 @@ function videos_init(App $a)
 
 	Nav::setSelected('home');
 
-	$o = '';
-
 	if ($a->argc > 1) {
 		$nick = $a->argv[1];
 		$user = q("SELECT * FROM `user` WHERE `nickname` = '%s' AND `blocked` = 0 LIMIT 1",
@@ -163,19 +161,12 @@ function videos_content(App $a)
 	//
 	if ($a->argc > 3) {
 		$datatype = $a->argv[2];
-		$datum = $a->argv[3];
 	} elseif(($a->argc > 2) && ($a->argv[2] === 'upload')) {
 		$datatype = 'upload';
 	} else {
 		$datatype = 'summary';
 	}
 
-	if ($a->argc > 4) {
-		$cmd = $a->argv[4];
-	} else {
-		$cmd = 'view';
-	}
-
 	//
 	// Setup permissions structures
 	//
@@ -209,7 +200,6 @@ function videos_content(App $a)
 
 			if (DBA::isResult($r)) {
 				$can_post = true;
-				$contact = $r[0];
 				$remote_contact = true;
 				$visitor = $contact_id;
 			}
@@ -239,17 +229,11 @@ function videos_content(App $a)
 			);
 
 			if (DBA::isResult($r)) {
-				$contact = $r[0];
 				$remote_contact = true;
 			}
 		}
 	}
 
-	if (!$remote_contact && local_user()) {
-		$contact_id = $_SESSION['cid'];
-		$contact = $a->contact;
-	}
-
 	if ($a->data['user']['hidewall'] && (local_user() != $owner_uid) && (!$remote_contact)) {
 		notice(L10n::t('Access to this item is restricted.') . EOL);
 		return;
diff --git a/mod/view.php b/mod/view.php
index 640606bce1..c59eea2982 100644
--- a/mod/view.php
+++ b/mod/view.php
@@ -13,7 +13,6 @@ function view_init(App $a)
 		
 	if ($a->argc == 4){
 		$theme = $a->argv[2];
-		$THEMEPATH = "view/theme/$theme";
 		if(file_exists("view/theme/$theme/style.php"))
 			require_once("view/theme/$theme/style.php");
 	}
diff --git a/mod/wall_attach.php b/mod/wall_attach.php
index 40f82eef91..fb665ac2fa 100644
--- a/mod/wall_attach.php
+++ b/mod/wall_attach.php
@@ -38,11 +38,9 @@ function wall_attach_post(App $a) {
 	}
 
 	$can_post  = false;
-	$visitor   = 0;
 
 	$page_owner_uid   = $r[0]['uid'];
 	$page_owner_cid   = $r[0]['id'];
-	$page_owner_nick  = $r[0]['nickname'];
 	$community_page   = (($r[0]['page-flags'] == Contact::PAGE_COMMUNITY) ? true : false);
 
 	if ((local_user()) && (local_user() == $page_owner_uid)) {
@@ -68,7 +66,6 @@ function wall_attach_post(App $a) {
 
 				if (DBA::isResult($r)) {
 					$can_post = true;
-					$visitor = $contact_id;
 				}
 			}
 		}
diff --git a/mod/wall_upload.php b/mod/wall_upload.php
index d1fb918bfe..ea06b1d1c1 100644
--- a/mod/wall_upload.php
+++ b/mod/wall_upload.php
@@ -272,8 +272,6 @@ function wall_upload_post(App $a, $desktopmode = true)
 		}
 	}
 
-	$basename = basename($filename);
-
 	if (!$desktopmode) {
 		$r = q("SELECT `id`, `datasize`, `width`, `height`, `type` FROM `photo`
 			WHERE `resource-id` = '%s'
diff --git a/src/Worker/PubSubPublish.php b/src/Worker/PubSubPublish.php
index 1fb1969310..b6061f8199 100644
--- a/src/Worker/PubSubPublish.php
+++ b/src/Worker/PubSubPublish.php
@@ -5,7 +5,6 @@
 
 namespace Friendica\Worker;
 
-use Friendica\BaseObject;
 use Friendica\Core\Logger;
 use Friendica\Core\System;
 use Friendica\Database\DBA;