Download of dbg-2.11.26-Win32.zip (dbg-2.11.26-Win32.zip ( external link: SF.net): 559,910 bytes) will begin shortly. If not so, click link on the left.
DBG is a full-featured PHP Debugger and Profiler. Makes it easier to find problems or bugs in PHP scripts. DBG supports back-tracking, watching variables, viewing arguments passed to all nested function calls at any point of execution. Opensource.