Rob Allen has a new post today showing you how to load in your own local configuration files into a Zend_Application Zend Framework app.
A friend of mine recently had a requirement where she wanted to have two config files loaded into Zend_Application, so that the specific settings for the server were not stored in the version control system. Hence she has two config files: application.ini and local.ini where local.ini is different on each server. The easiest way to approach this problem is to load the two files within index.php, merge them and then pass the merged config file to Zend_Application.
He includes the code to handle the import - pulling in both configuration files with Zend_Config and merging them with a "merge" call and setting their access back with a "setReadOnly".