如何使用.htaccess或php为子域设置根域镜像

Question

我想要一个子域来镜像根域（例如：sub.root.com镜像root.com），并且我想通过.htaccess或php来完成此操作，首选.htaccess。

Answer 1

RewriteCond %{ENV:REDIRECT_STATUS} ^$

RewriteCond %{HTTP_HOST} ^((subdomain).)?([a-zA-Z0-9-]+.([a-zA-Z]{2,3}(:[0-9]+)?))$ [NC]

RewriteRule ^(.*)$ /%{REQUEST_URI} [QSA,L]

Answer 2

you don't have to write any PHP code or modify .htaccess . you can accomplish this by just modifying /etc/hosts (Linux) or %SystemRoot%/Windows/system32/drivers/etc/hosts (Windows)