Debugging can be one of the most important tools to a developer (web or otherwise) and one of the more popular PHP IDEs, Zend Studio, makes it relatively simple to do. The Developer Tutorials website has this new tutorial to help you get started on the path to being bug free.

For the majority of experienced PHP developers, Zend Studio is considered the top-of-the-line PHP IDE. [...] In this tutorial, we will explore how to use the latest update of Zend Studio for debugging PHP scripts.

They walk through an overview of the IDE, some of the requirements and the install process and, finally, they finish it off with a few pages talking about how the get the debugging up and running.