protected static function fe()
    {
        if( ! empty(ZN::upgrade()) )
        {
            $status = self::$lang['upgradeSuccess'];
        }
        else
        {
            $status = self::$lang['alreadyVersion'];

            if( $upgradeError = ZN::upgradeError() )
            {
                $status = $upgradeError;
            }         
        }

        return $status;
    }
protected static function fe()
    {
        if( ! empty(ZN::upgrade()) )
        {
            $status = self::$lang['upgradeSuccess'];
        }
        else
        {
            $status = self::$lang['alreadyVersion'];

            if( $upgradeError = ZN::upgradeError() )
            {
                $status = $upgradeError;
            }         
        }

        return $status;
    }
protected static function fe ( ) { if ( ! empty ( ZN :: upgrade ( ) ) ) { $ status = self :: $ lang [ 'upgradeSuccess' ] ; } else { $ status = self :: $ lang [ 'alreadyVersion' ] ; if ( $ upgradeError = ZN :: upgradeError ( ) ) { $ status = $ upgradeError ; } } return $ status ; }
Protected upgrade FE
Protected upgrade FE