Saw a post on dzone about setting up the Zend Debugger for use with PDT. Installing PDT and Zend Debugger (client) is easy. Getting PHP web debugging to work took a little more effort.
Zend Debugger is a full-featured php debugger engine. It is an interactive tool that allows you to debug PHP scripts locally or remotely, from an IDE or from the console. Installing Zend Debugger client. Installing Zend Debugger server. Setup php.ini