Appendix E. Debugging PHP

Table of Contents
About the debugger
Using the Debugger
Debugger Protocol

About the debugger

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, the Advanced PHP Debugger (APD) or Xdebug which even has a compatible debugger interface as PHP 3's debugging functionality as is described in this section.