Introduction
Xdebug is a PHP extension for powerful debugging. It supports stack and function traces, profiling information and memory allocation and script execution analysis.
Install Xdebug on Windows
Download php_xdebug.dll from official website. Edit php.ini like this:
[xdebug] xdebug.profiler_enable = 1 xdebug.profiler_enable_trigger = 1 xdebug.profiler_output_name = cachegrind.out.%p xdebug.profiler_output_dir = "..\ext\xdebug_profilers" xdebug.trace_output_dir = "..\ext\xdebug_traces" xdebug.auto_trace = 0 xdebug.collect_params = 4 xdebug.collect_return = 1 xdebug.show_mem_delta = 1 zend_extension = "..\ext\php_xdebug.dll"
We can get more configuration information from the official documents. After edited the config file, restart the web server.
<?php
register_shutdown_function('xdebug_stop_trace');
xdebug_start_trace("..\ext\xdebug_traces");
// Code to trace ...
xdebug_stop_trace();
WinCacheGrind is a viewer for cachegrind.out files generated by Xdebug and QCacheGrind (KCacheGrind) Windows build is a GUI to parse and view Xdebug trace files. If you got MSVCP100.dll Missing error, download and install Microsoft Visual C++ 2010 Redistributable Package (x86, x64).
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Profiling PHP Applications with XHProf