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Gabriel Paval

Web Developer at ASSIST

Xdebug is a free open source PHP extension and is a developer's powerful tool when it's come to: tracing, profiling, debugging, and creating code coverage statistics. Documentation and installation guide can be found here. To activate xdebug extension we need to open our php.ini file and add these entries:

zend_extension=/path/to/your/php/extension/xdebug.so
xdebug.profiler_output_dir=/tmp/xdebug_profile
xdebug.profiler_enable_trigger=1
xdebug.profiler_enable=0
xdebug.auto_trace=0
xdebug.collect_params=1
xdebug.collect_return=1
xdebug.collect_vars=1
xdebug.trace_output_name="cachegrind.out.%s.%p.%u"
xdebug.profiler_output_name="cachegrind.out.%s.%p.%u"
xdebug.trace_format=1
xdebug.extended_info=1

Having restarted your web server because we changed php.ini, you can check
the output of phpinfo() or run php -m at the command line.
In each case, xdebug must be listed twice, once as a PHP extension, and as a Zend extension as well.

We use profiling feature of Xdebug for counting how many times a statement has been excecuted and how much execution time it took. To do that you must put the next URL parameter "?XDEBUG_PROFILE=1" on the page you need to track. In /tmp/xdebug_profile directory you'll have now an "cachegrind.out.%s.%p.%u" file that is not meant for human redability and it can be opened with tools like WinCacheGrind or KCacheGrind.

Do you want to get in touch with us? 

If you are interested in our software development services, you would like to join our team, or you simply want to find out more about us, we’d love to hear from you! Drop us a line and a member of the ASSIST team will get back to you as soon as possible. We are sure we can ASSIST you.

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