diff --git a/include/dba.php b/include/dba.php
index bac61ec2f..d2f631c06 100644
--- a/include/dba.php
+++ b/include/dba.php
@@ -971,7 +971,7 @@ class dba {
 					// Split the SQL queries in chunks of 100 values
 					// We do the $i stuff here to make the code better readable
 					$i = $counter[$key_table][$key_condition];
-					if (count($compacted[$key_table][$key_condition][$i]) > 100) {
+					if (isset($compacted[$key_table][$key_condition][$i]) && count($compacted[$key_table][$key_condition][$i]) > 100) {
 						++$i;
 					}
 
diff --git a/mod/friendica.php b/mod/friendica.php
index 6c143634c..1929150f2 100644
--- a/mod/friendica.php
+++ b/mod/friendica.php
@@ -116,14 +116,14 @@ function friendica_content(App $a)
 	} else {
 		$o .= '<p>' . L10n::t('No installed addons/apps') . '</p>' . PHP_EOL;
 	}
-	
+
 	if (Config::get('system', 'tosdisplay'))
 	{
 		$o .= '<p>'.L10n::t('Read about the <a href="%1$s/tos">Terms of Service</a> of this node.', System::baseurl()).'</p>';
 	}
 
-	$blocklist = Config::get('system', 'blocklist');
-	if (count($blocklist)) {
+	$blocklist = Config::get('system', 'blocklist', []);
+	if (!empty($blocklist)) {
 		$o .= '<div id="about_blocklist"><p>' . L10n::t('On this server the following remote servers are blocked.') . '</p>' . PHP_EOL;
 		$o .= '<table class="table"><thead><tr><th>' . L10n::t('Blocked domain') . '</th><th>' . L10n::t('Reason for the block') . '</th></thead><tbody>' . PHP_EOL;
 		foreach ($blocklist as $b) {
diff --git a/src/Model/Profile.php b/src/Model/Profile.php
index cd8fa29e1..f86fce9b2 100644
--- a/src/Model/Profile.php
+++ b/src/Model/Profile.php
@@ -92,14 +92,14 @@ class Profile
 	{
 		$user = dba::selectFirst('user', ['uid'], ['nickname' => $nickname]);
 
-		if (!$user && !count($user) && !count($profiledata)) {
+		if (!DBM::is_result($user) && empty($profiledata)) {
 			logger('profile error: ' . $a->query_string, LOGGER_DEBUG);
 			notice(L10n::t('Requested account is not available.') . EOL);
 			$a->error = 404;
 			return;
 		}
 
-		if (!x($a->page, 'aside')) {
+		if (empty($a->page['aside'])) {
 			$a->page['aside'] = '';
 		}
 
@@ -157,10 +157,6 @@ class Profile
 			require_once $theme_info_file;
 		}
 
-		if (!x($a->page, 'aside')) {
-			$a->page['aside'] = '';
-		}
-
 		if (local_user() && local_user() == $a->profile['uid'] && $profiledata) {
 			$a->page['aside'] .= replace_macros(
 				get_markup_template('profile_edlink.tpl'),
diff --git a/src/Object/Post.php b/src/Object/Post.php
index 86e141467..820730a32 100644
--- a/src/Object/Post.php
+++ b/src/Object/Post.php
@@ -78,7 +78,7 @@ class Post extends BaseObject
 		}
 
 		// Prepare the children
-		if (count($data['children'])) {
+		if (!empty($data['children'])) {
 			foreach ($data['children'] as $item) {
 				// Only add will be displayed
 				if ($item['network'] === NETWORK_MAIL && local_user() != $item['uid']) {
diff --git a/src/Util/Temporal.php b/src/Util/Temporal.php
index 1ed08ed1d..46bd8bba5 100644
--- a/src/Util/Temporal.php
+++ b/src/Util/Temporal.php
@@ -59,7 +59,7 @@ class Temporal
 
 		$o = '<select id="timezone_select" name="timezone">';
 
-		usort($timezone_identifiers, [self, 'timezoneCompareCallback']);
+		usort($timezone_identifiers, [__CLASS__, 'timezoneCompareCallback']);
 		$continent = '';
 		foreach ($timezone_identifiers as $value) {
 			$ex = explode("/", $value);