public function findPath()
 {
     foreach ($this->url as $url) {
         if ($path = Useful::array_search_recursive('/' . APP . $url, $this->navigation_array[APP])) {
             return $path;
         } else {
             if ($path = Useful::array_search_recursive($url, $this->navigation_array[APP])) {
                 return $path;
             }
         }
     }
     return false;
 }