public static function init()
 {
     if (!self::$_isInit) {
         self::checkInstalled();
         require_once DISCUZ_ROOT . '/mobcent/app/config/mobcent_version.php';
         loadcache(self::PLUGIN_ID);
         global $_G;
         self::$config = $_G['cache']['plugin'][self::PLUGIN_ID];
         self::$_isInit = true;
     }
 }