Run multiple domains under 1 wordpress instance

Question

I have a question. I am trying to set up two domains under one wordpress instance.

For instance, I have a wordpress site on www.site1.com

I have another domain called www.site2.com. Now, I want to run the same wordpress site that is under www.site1.com on www.site2.com

I tried using the wordpress domain mu mapping plugin

http://wordpress.org/plugins/wordpress-mu-domain-mapping/installation/

But it only allows me subdomains or directories of www.site1.com

Can anyone help?

Answer 1

Add

define('WP_SITEURL', 'http://' . $_SERVER['HTTP_HOST'] );
define('WP_HOME', 'http://' . $_SERVER['HTTP_HOST'] );

to wp-config.php.