在asp.net中我使用app_offline.htm。在php的情况下，希望这个可以帮助你

http://***.com/questions/3297444/app-offline-on-iis7-with-php [ ^ ]

In asp.net I use app_offline.htm.In case of php,Hope this one helps you
http://***.com/questions/3297444/app-offline-on-iis7-with-php[^]