/**
  * @see sfPatternRouting
  */
 public function parse($url)
 {
     try {
         return parent::parse($url);
     } catch (sfError404Exception $e) {
         return false;
     }
 }
 public function parse($url)
 {
     $parameters = parent::parse($url);
     unset($parameters['_sf_route']);
     return $parameters;
 }