The Ultimate PHP Productivity Solution
Z-Ray is a revolutionary new addition to a PHP developer's toolkit. It displays all the under-the-hood details of a page request, across all the PHP scripts involved in building the page. Z-Ray is injected into the response coming from your PHP app and shown right in the browser you're using for development: you get vastly greater insight without changing your development workflow. The PHP debug capabilities of Z-ray is unlike anything you've ever seen.
Z-Ray is available with Zend Server -OR- for installation on your PHP stack
Overview of PHP Debug Features