title: How to get form POST data with Firebug?
body: <p>I need, in my debugging phase, to lookup what passes in the <code>$_POST</code> variable in a page that I can't currently touch (it's live online.)</p>
  
  <p>I picked up my trusty Firebug, and can't find an option making it able to read this PHP variable.</p>
  
  <p>So how could I checkup what is in that <code>$_POST</code> variable, without touching the code of the page I'm viewing?</p>