https://www.XXX.com/1.xml
https://www.XXX.com/2.xml
https://www.XXX.com/3.xml
https://www.XXX.com/4.xml
.
.
.
https://www.XXX.com/198.xml
https://www.XXX.com/199.xml
https://www.XXX.com/200.xml
里面只有一个链接返回的是 200 状态码
其他都是 404
用最快方法找出返回 200 的链接
只限 php
https://www.XXX.com/2.xml
https://www.XXX.com/3.xml
https://www.XXX.com/4.xml
.
.
.
https://www.XXX.com/198.xml
https://www.XXX.com/199.xml
https://www.XXX.com/200.xml
里面只有一个链接返回的是 200 状态码
其他都是 404
用最快方法找出返回 200 的链接
只限 php