More usage of dbm::is_result($r) instead of count($r):

- count() returns very different results and never a boolean (not even false on
  error condition).
- therefore you should NOT use it in boolean expressions. This still *can* be
  done in PHP because of its lazyness. But it is discouraged if it comes to
  more clean code.

Signed-off-by: Roland Häder <roland@mxchange.org>

include/Contact.php

@@ -64,7 +64,7 @@ function contact_remove($id) {
 	$r = q("select uid from contact where id = %d limit 1",
 		intval($id)
 	);
-	if((! count($r)) || (! intval($r[0]['uid'])))
+	if((! dbm::is_result($r)) || (! intval($r[0]['uid'])))
 		return;
 
 	$archive = get_pconfig($r[0]['uid'], 'system','archive_removed_contacts');
@@ -249,7 +249,7 @@ function get_contact_details_by_url($url, $uid = -1, $default = array()) {
 			FROM `gcontact` WHERE `nurl` = '%s'",
 				dbesc(normalise_link($url)));
 
-	if ($r) {
+	if (dbm::is_result($r)) {
 		// If there is more than one entry we filter out the connector networks
 		if (count($r) > 1) {
 			foreach ($r AS $id => $result) {
@@ -435,7 +435,7 @@ function random_profile() {
 			ORDER BY rand() LIMIT 1",
 		dbesc(NETWORK_DFRN));
 
-	if(count($r))
+	if(dbm::is_result($r))
 		return dirname($r[0]['url']);
 	return '';
 }