Xdebug is a PHP extension which provides debugging and profiling capabilities. It uses the DBGp debugging protocol.

The debug information that Xdebug can provide includes the following:

• stack and function traces in error messages with:

  full parameter display for user defined functions

• function name, file name and line indications

• support for member functions

• memory allocation

• protection for infinite recursions

Xdebug also provides:

• profiling information for PHP scripts

• code coverage analysis

• capabilities to debug your scripts interactively with a debugger front-end.

Xdebug is also available via the PECL.

See also

• Debugger

• Dynamic program analysis

• Software performance analysis

• Optimization

• DBG (another open source PHP debugger)

• Zend Studio (the Zend Debugger is an alternative to Xdebug)

References

External links

• Xdebug in PECL

• Xdebug trace log visualization tool