Best way to store a PHP App's Settings?

Question

What is the best approach to storing a group of global settings for a custom PHP application? I am working on a personal project (first major one really), and need a method

Answer 1

We just use

$siteConfig['db_name'] = 'database1';
$siteConfig['site_name'] = 'Stackoverflow';

In a included php file. Putting the values in a array helps with name conflicts.