EllisLab/CodeIgniter — pull request #2443 by natali (2013-05-13 06:23:52+00:00)
Title: Change array_merge into array_merge_recursive

If I loaded two configs with the following config item:

config1.php

$config['default']['config1']	= TRUE;

config2.php

$config['default']['config2']	= TRUE;

The second config will replace the first config, since the merging uses array_merge, thus the first $config['default'] will be replaced with the second.