https://blog.wongcw.com/2018/10/14/whmcs%e6%94%af%e4%bb%98%e7%bd%91%e5%85%b3-%e6%94%af%e4%bb%98%e5%ae%9d%e5%bd%93%e9%9d%a2%e4%bb%98%e6%8f%92%e4%bb%b6-%e5%bc%80%e5%90%afoneman-idc%e6%a8%a1%e5%bc%8f/
Whmcs支付网关 – 支付宝当面付插件/开启Oneman IDC模式