Checking if property is set bt checking key instead

We want to know if it is set, not if it is set and not null (which isset basically means)

Author: tudborg

klein.php

@@ -323,7 +323,7 @@ public function param($key, $default = null) {
     }
 
     public function __isset($param) {
-        return isset($_REQUEST[$param]);
+        return array_key_exists($param, $_REQUEST);
     }
 
     public function __get($param) {