如何在重写规则中捕获子域

Question

我想重定向此网址：

http://tops.domain.com/test
http://files.domain.com/css/style.css
http://domain.com/test

到这些：

/tops.php?what=test
/css/style.css
/index.php?username=test

我在.htaccess文件中编写了这些代码并将其放在root：

中

Options +FollowSymlinks 
RewriteEngine On
RewriteBase /

RewriteCond %{HTTP_HOST} ^tops\.  [NC]
RewriteRule  .*  tops.php?what=$0  [QSA,L,NC]

RewriteCond %{HTTP_HOST} ^files\.  [NC]
RewriteRule .* $0 [NC,L,QSA]

RewriteRule .+  index.php?username=$0 [L,QSA]

但不能正常工作

Answer 1

使用此.htaccess：

Options +FollowSymlinks 
RewriteEngine On
RewriteBase /

RewriteCond %{HTTP_HOST} ^files\.  [NC]
RewriteRule ^ - [L]

RewriteCond %{HTTP_HOST} ^tops\.  [NC]
RewriteCond %{REQUEST_URI} !^/tops\.php [NC]
RewriteRule .* tops.php?what=$0  [QSA,L,NC]

RewriteCond %{QUERY_STRING}  !^username= [NC]
RewriteRule .+ index.php?username=$0 [L,QSA]