Mapping Multiple Domains into Single Instance of WordPress

I have come across a need of mapping multiple domains into single instance of WordPress installation for my blog myjeeva.com & myjeeva.mobi.  Then I did a search on the net, I found lot of references and plugins for single WordPress instance for multiple blog site within; take a look on top plugins for wordpress multisite but not for my need!

There are multiple ways to achieve mapping multiple domains into single wordpress installation (sharing everything except domain name).  I thought to create a blog post around these activities, perhaps it will benefit someone!

Approach Taken & Implemented

Below are the steps I followed for my blog.

• Installed the WordPress into parent domain myjeeva.com
• Configured various plugins for my blog
• Pointed second domain myjeeva.mobi into parent domain IP through A record in DNS zone editor
• Edited wp-config.php for two domain names according while accessing i.e. to reflect Site URL and Site Home to respectively

Editing wp-config.php

• Go to WordPress installed root directory and look for wp-config.php file
• Place below lines after the table_prefix line; order is very important in wp-config.php , more info

/*
 * Handle multi domain into single instance of wordpress installation
 */
define('WP_SITEURL', 'http://' . $_SERVER['HTTP_HOST']);
define('WP_HOME', 'http://' . $_SERVER['HTTP_HOST']);

• Go to wordpress admin page and take a look at Settings -> General. You will have WordPress Address (URL) and Site Address (URL) will be in disabled state.  It means your wordpress installation dynamic enoungh to accomadate both domain address

Completion