Redirect domain's content to another domain

1) How would I redirect user1.domain.com to display domain.com/user?id=1 content?

2) How would I redirect domain1.com to display sub.domain2.com's content?

I have both domains on the same server/host, so I don't think changing A records in the DNS is the issue.

From serverfault Kris Sauquillo

• The following assumes that you are using Apache.

  1) How would I redirect user1.domain.com to display domain.com/user?id=1 content?

  Something like the following should work although I haven't tested it:

  RewriteEngine On
  RewriteCond %{HTTP_HOST}  ^user1\.domain\.com [NC]
  RewriteRule . http://domain.com/user?id=1 [L,R]
  

  2) How would I redirect domain1.com to display sub.domain2.com's content?

  <VirtualHost *:80>
    ServerName domain1.com
    Redirect 302 / http://sub.domain2.com/
  </VirtualHost>
  

  Kris Sauquillo : Ah, thanks! One more minor question.. how would I make it so

  KayakJim : You could add those statements to either .htaccess or your apache configuration, depending whether you have root access or not.
  From KayakJim