Profiling PHP Applications with Xdebug | Rawkode Live

In this episode, joined by Derick Rethans, we take a look at Xdebug and how it help you profile your PHP applications, allowing you to use a profiling front-end, like qcachegrind, to visualise your call graphs and dig into the bottlenecks of your applications.

Xdebug is an extension for PHP to assist with debugging and development.

- It contains a single step debugger to use with IDEs
- It upgrades PHP's var_dump() function
- It adds stack traces for Notices, Warnings, Errors and Exceptions
- It features functionality for recording every function call and variable assignment to disk
- It contains a profiler
- It provides code coverage functionality for use with PHPUnit

🕰 Timeline

00:00 - Holding Screen
01:55 - Introductions
06:30 - What are we going to profile?
11:30 - Installing and enabling Xdebug extension with Pecl
17:40 - Profiling our hello-world example
28:20 - Profiling our factorial example
46:20 - Profiling our simple composer configuration
57:30 - Profiling our complex composer configuration
1:09:00 - Compiling Xdebug 3 for the performance gains!
1:13:00 - Profiling our complex composer configuration with much gains

🌎 Links

[BishalPaudel]

Thanks a lot. I learnt so much from this.

[mikulcek]

Great show, learned a lot, thanks for this.

[-maverck]

Great explanation! I never knew these things before.

[abdulrahman_]

I'm really enjoyed this episode, thanks for sharing : )

[ibrahimhafez]

Hi! First of all thank you for the video!

I just wanna ask, if I have a memory leak in my vast website, would Xdebug actually provide the php memory profiling needed to identify where exactly is the leak and help me solve the issue?? or is it outside of the scope?

Thank you!

[derrybernicahyady]

thanks for sharing, i got many knowledge from this sharing :)

[lynic-]

Next time please edit the video. Saves a lot of time