auto loading custom configuration files which override config.php

[eluser]blasto333[/eluser]
Is is considered normal behavior that I should be allowed to override values in the config.php file with my custom configuration files? I am centralizing all the settings for my application in one file, so the user does not have to go all over the place to set it up.

Code:

<?php
$config['company']="Muench Inc!!";
$config['address']="";
$config['phone']="585-555-5555";
$config['email']="[email protected]";
$config['fax']="";
$config['website']="http://www.chrismuench.com";
$config['other']="";
$config['db_host']="localhost";
$config['db_name']="pos";
$config['db_user']="root";
$config['db_password']="******";
$config['default_tax_rate']="8";
$config['currency_symbol']="$";
$config['language'] = 'english';
?>