The Xdebug extension helps you debugging your script by providing a lot of
valuable debug information. The debug information that Xdebug can provide
includes the following:
* stack and function traces in error messages with:
o full parameter display for user defined functions
o function name, file name and line indications
o 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 debug client
Documentation: https://xdebug.org/docs/
