I am currently working on customizing a twenty eleven wordpress theme. I finding it difficult to locate the php fuction location inside the documents. It would be really very useful to locate code like firebug inspect mode for html and css.

Edited January 22, 201214 yr by rahul dagli

You need to be working in a decent IDE. Try Netbeans (you can [ctrl] + click a function call and it'll take you to the function definition).

 

Because of the architecture there's not much you can do about inspecting PHP in the browser - the PHP is all evaluated server-side.