How to get form POST data with Firebug?

Question

I need, in my debugging phase, to lookup what passes in the $_POST variable in a page that I can't currently touch (it's live online.)

I picked up my trusty Firebug, and can't find an option making it able to read this PHP variable.

So how could I checkup what is in that $_POST variable, without touching the code of the page I'm viewing?

Answer 1

Check this answer Use Net Tab of Firebug. There is POST info in that tab too!

Original question:To see the content POST data trasferred by jQuery

Answer 2

A nice alternative: TamperData

You can even modify post data before submitting.

2019-06-20: link updated