how to make mod_rewrite to redirect from subdomains to querystring?

Question

I want to make mod rewrite as the following example :

from google.com.mydomain.com to mydomain.com/index.php?domain=google.com

I use like

Rewrit         


        

Answer 1

It is due to the incorrect regex. Try this rule:

RewriteCond %{HTTP_HOST} !^www [NC]
RewriteCond %{QUERY_STRING} !domain=
RewriteCond %{HTTP_HOST} ^(.+?)\.mydomain\.com$ [NC]
RewriteRule ^(.*)$ /index.php?domain=%1 [L,QSA]

In your rule you're using [^\.]+ which matched until a dot is found therefore it is matching google instead of google.com.