View source for Adding and using configuration settings

{{howto|Easy|[[Lorna Mitchell]] <lorna@ibuildings.com>}}

Adding a new configuration setting can be very useful, and in ATK its very easy.  In config.inc.php, just add a line which sets the variable, e.g.:
<php
$config_foo = 'bar';
</syntaxhighlight>

The variable name must start with $config.

To retrieve variables, either ones you've added or existing ones, use the atkconfig() function and supply the name of the variable you want.
<syntaxhighlight lang="php">
atkconfig("foo");
</syntaxhighlight>
This would return the variable $config_foo from the config file.  Arrays can also be handled in this way.  The atkconfig() call can be used from within your module and attribute classes.