Question

such as:

[production]
resources.frontController.moduleDirectory = APPLICATION_PATH

How to know “resources.frontController.moduleDirectory” is a valid config item

Answer 1

All keys that start with resources.someResourceName will be passed to the corresponding resource. Each individual resource is responsible for dealing with those options.

The Zend Framework manual includes a page that lists configuration keys for the built-in resources. While that page should probably cover most things, it’s not necessarily exhaustive.

If the manual doesn’t list the keys for the resource you’re looking for, it’s often a good assumption that the same options you can programmatically pass to a Zend Framework component are also keys for its associated resource. As a last resort, looking in the resource’s code (which will be in the Zend/Application/Resource folder for built-in resources) should at least give you an idea what keys are valid.

Of course, you can also write your own resource plugins, and you’d be in control of what configuration keys they accept.