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Miro Svrtan: Debugging Uploadify jQuery plugin with XDebug

Note: This article was originally published at PHPDeveloper on 31 August 2012.
PHPDeveloper

Miro Svrtan has a quick tip for those using the Uploadify plugin in their application's file uploads - how to enable XDebug debugging on each upload request.

If you ever decided to use Uploadify jQuery plug-in you might have noticed problems with debugging remote PHP code that this plugin relies on. [...] Unfortunately setting this up will not work with Uploadify Flash version since calls to remote server side is not done inside browser but inside flash plugin. [...] Few months ago I found my self blindly debugging it again and remembered that I read somewhere that xdebug parameters can be sent via GET/POST too.

He takes advantage of this fact and appends the "XDEBUG_SESSION_START" and "XDEBUG_SESSION" values in the "scriptData" handler for the Uploadify call. The XDebug session is then started when the script executes and your IDE will receive the results.