Is there a site that does nothing but spit out whatever POST form parameters were sent to it?

Is there a site online available to the general public that does nothing but display whatever form variables (name-value pairs) were sent to it via POST?

Yes, it's 开发者_开发百科very simple and I have already made one myself, the question is to see if there is something generally available in case my box is down or I am working with someone else and I just want to send them a link that does this for debugging purposes.

Yes: PostBin.

I use it, it's great.

(this was posted before the edit to the question that nullifies it)

Post this PHP script in your hosting account (if you have one):

<?php
header('Content-type: text/plain');
var_dump($_POST);