public static function getSubLinks($id)
 {
     $path = Folder::getPath($id);
     $folders = explode('/', $path);
     $links = [];
     $IN = '';
     for ($i = 2, $c = count($folders); $i < $c; $i++) {
         $IN .= '"' . $folders[$i] . '",';
     }
     $db_links = DB::select('SELECT folder_id, name FROM folders WHERE folder_id IN (' . substr($IN, 0, -1) . ')');
     for ($i = 3, $c = count($folders); $i < $c; $i++) {
         foreach ($db_links as $link) {
             if ($folders[$i] == $link->folder_id) {
                 array_push($links, $link);
             }
         }
     }
     return $links;
 }