title: Getting PHP $_POST values by index?
body: <p>I'm curious, more than anything - is it possible to get a PHP value posted? i.e. <code>$_POST['foo']</code> via some kind of indexing? i.e. <code>$_POST[0]</code>?</p>
  
  <p>(<code>$_POST[0]</code> does not work by the way)</p>