Question

I am needing to translate an unknown subdomain to a variable so the following would apply:

• http://test.example.com/ → http://www.example.com/?domain=test

• http://xyz.example.com/ → http://www.example.com/?domain=xyz

• http://www.example.com/ → http://www.example.com/

• http://www.example.com/pageA/ → http://www.example.com/pageA/

• http://fish.example.com/pageB?somevar=something → http://www.example.com/pageB?somevar=something&domain=fish

• http://www.example.com/pageB?somevar=something → http://www.example.com/pageB?somevar=something

• http://fish.example.com/pageB → http://www.example.com/pageB?domain=fish

As you can see all I need to do is replace any subdomain with www and append the subdomain name as a get var called domain.

I’m getting really lost with this.

Edit: Oh I also want the user to still see the subdomain in the url, rather than redirecting.

Answer 1

Try this:

RewriteEngine on
RewriteCond %{HTTP_HOST} ^([a-z]+)\.example\.com$
RewriteCond %1 !=www
RewriteRule ^ http://www.example.com%{REQUEST_URI}?domain=%1 [QSA]