A quick and easy way to change WordPress's SITE URL

This is a quick and easy way to change WordPress's SITE URL without touching the database:

Add these lines to your wp-config.php:

define('WP_HOME','http://example.com');
define('WP_SITEURL','http://example.com');

Basically, they will force the site to use that address instead. Any config you make in the WordPress Admin Dashboard will not be affected.