Appendices
PHP Manual

Debugging in PHP

About debugging in PHP

PHP 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/, the » Advanced PHP Debugger (APD) or » Xdebug.


Appendices
PHP Manual