Portable mysql configuration

portable-mysql-configuration.php

<?php
switch($_SERVER['SERVER_NAME'])
{
case 'localhost':
case 'LAN.IP.ADD.RESS':
	$database_hostname = 'DATABASE_HOSTNAME';
	$database_username = 'DATABASE_USERNAME';
	$database_password = 'DATABASE_PASSWORD';
	$database_name = 'DATABASE_NAME';
	break;
case 'main.site.address':
default:
	$database_hostname = 'DATABASE_HOSTNAME';
	$database_username = 'DATABASE_USERNAME';
	$database_password = 'DATABASE_PASSWORD';
	$database_name = 'DATABASE_NAME';
	break;
}
mysql_connect($database_hostname, $database_username, $database_password) or die('Error connecting the database.');
mysql_select_db($database_name) or die('Error selecting the database!');
?>