. PHP Manual . Prev . Next . Table of Contents . About the debugger . Using the Debugger . Debugger Protocol . PHP 3 includes support for a network-based debugger. PHP 4 does not have an internal debugging facility. You can use one of the external debuggers though. The Zend IDE includes a debugger, and there are also some free debugger extensions like DBG at http://dd.cron.ru/dbg/ or the Advanced PHP Debugger (APD). Prev . Home . Next . Other incompatibilities . Up . Using the Debugger