now, if i want to trace the drupal sourcecode.how and which tool i can use to trace the drupal source code?i want to make a quick walk-through to drupal code. and want to trace it myself,but i don’t know which good debugger i should use and how to trace it, thank you
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xdebug is an extension to PHP.
With it, you can get a Trace file every time a page is loaded, with a full list of every function called while rendering that page.
http://www.xdebug.org/docs/execution_trace