1 、记一次Nginx的负载配置 在PHP程序中读取 $\_SERVER\['HTTP\_HOST'\] 可以看到正确域名，但是在对读取的结果进行 strstr ，explode 等处理时却变成了 ip 。最后发现时在代理时的配置问题。 ``` upstream proxy.com { server 127.0.0.1:2346; } server { listen 80; server_name proxy.tp6.com; root "G:/www_local/tp6/public"; charset utf-8; location / { proxy_pass http://proxy.com; proxy_set_header Host $proxy_host; ==> 这里要写成 $host 才正常 # proxy_set_header X-Real-IP $remote_addr; # proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; # proxy_set_header HTTP_X_FORWARDED_FOR $remote_addr; # proxy_redirect default; } } ``` >[danger] proxy\_set\_header Host $proxy\_host; > 这里要写成 $host 才正常 [https://www.cnblogs.com/xiaozong/p/5347345.html](https://www.cnblogs.com/xiaozong/p/5347345.html)