Continuing on from his previous post introducing you to the ZFTool for Zend Framework 2 applications, Matthew Setter has posted part two of the series focusing on the creation of custom diagnostic classes for the tool.
In this week's tutorial, we're going to see how to step beyond the in-built classes and write our own custom checks. Specifically, we're going to write a check which runs php lint on the module's config file, module.config.php. The reason for doing this is because this file is so important in the configuration of a ZF2 module, that we should have a helpful sanity check for it.
He starts by helping you get all the needed dependencies in place, the ZFTool and ZendDiagnostics modules, installed via Composer. He includes code to help get started on the new diagnostic class and accompanying files. He implements some required methods from an interface, and shows how to enable its checking and define the configuration file. He includes a screenshot of the output so you can ensure things are working as they should be.