static function do_logout() { self::$auth = false; self::$user = null; self::$user_id = null; self::$group = null; self::$group_id = null; self::$msession = null; setcookie('mpmi_r', '', time() - 3600); setcookie('mpmi_t', '', time() - 3600); setcookie('mpmi_b', '', time() - 3600); }