Apache用mod_rewrite配置子域名

虽然用vhost可以支持子域名, 但不方便.

RewriteCond $1 !^bbs/
RewriteCond %{HTTP_HOST} bbs.example.com
RewriteRule (.*) /bbs/$1 [L]

RewriteCond $1 !^bbs/ 避免内部无限redirect.

或者支持无限子域名:

RewriteCond %{ENV:Rewrite-Done} !^Yes$
RewriteCond %{HTTP_HOST} !^www\.example\.com
RewriteCond %{HTTP_HOST} ^([^.]+)\.example\.com
RewriteRule (.*) /%1/$1 [E=Rewrite-Done:Yes,L]