Question

i just want to ask a quick question about .htaccess.

Here’s how my webhosting works with subdomains…

Once i create a subdomain… then they create a folder into the root folder like this…

www.mydomain.com ---> public_html
sub.mydomain.com ---> public_html/sub

What i want to do is… to redirect all request from sub.mydomain.com to http://www.mydomain.com with some GET variable or something to identify from what subdomain the request is coming from…

So for example… when i get a requests to work like this

http://sub.mydomain.com/myphp.php ---> http://www.mydomain.com/myphp.php?comingfrom=sub
http://sub.mydomain.com/(anyUrl)  ---> http://www.mydomain.com/(anyUrl)?comingfrom=sub

I’m also wondering if this would execute some .htaccess redirects present in the main domain…

Hope you guys could help me…

Thanks in advance…

Answer 1

Put a .htaccess with following content into your subdomain folders:

RewriteEngine On
RewriteCond %{HTTP_HOST} ^(.*)\.mydomain\.com$ [NC]
RewriteRule ^(.*) http://www.mydomain.com$1?comingfrom=%1 [QSA,R=301,L]

(untested, sorry)

EDIT:

you pointed out that you would like to keep the subdomain in your addressbar and don’t want a redirect. So you need to make a view changes to your <VirtualHost> of http://www.mydomain.com like so

 <VirtualHost ...:80>
   ServerName www.mydomain.com
   ServerAlias mydomain.com
   ServerAlias sub.mydomain.com

   DocumentRoot /path/to/your/docroot/of/www.mydomain.com

   RewriteEngine On
   RewriteCond %{HTTP_HOST} !^www\.mydomain\.com [NC]
   RewriteCond %{HTTP_HOST} ^(.*)\.mydomain\.com$ [NC]
   RewriteRule ^(.*) $1?comingfrom=%1 [QSA,PT,L]
 </VirtualHost>