Change PHP keywords to comply with PSR2

PHP/proxy.php

@@ -1531,7 +1531,7 @@ public function pathMatch($allowedRefererPath, $refererPath)
 
     public function endsWith($haystack, $needle) {
         // search forward starting from end minus needle length characters
-        return $needle === "" || (($temp = strlen($haystack) - strlen($needle)) >= 0 && strpos($haystack, $needle, $temp) !== FALSE);
+        return $needle === "" || (($temp = strlen($haystack) - strlen($needle)) >= 0 && strpos($haystack, $needle, $temp) !== false);
     }
 
     public function checkAllowedReferer(){