Fix potential bugs without expected behavior change

- Fix uninitialized variables
- Fix potentially not set variables
- Fix wrong parameter default value
- Fix method scope
- Fix missing return value

mod/directory.php

@@ -111,8 +111,11 @@ function directory_content(App $a)
 			$photo = 'photo';
 		}
 
+		$entries = [];
+
 		while ($rr = DBA::fetch($r)) {
 
+		while ($rr = DBA::fetch($r)) {
 			$itemurl = (($rr['addr'] != "") ? $rr['addr'] : $rr['profile_url']);
 
 			$profile_link = $rr['profile_url'];