If a form with method="post" is submitted with an input image:

<input type="image" src="/i/submit.gif?phpMyAdmin=4594f30712f4fabaff6997416810f3f2" />
should the $_POST array in PHP be empty? I switched a regular submit button to an image and errors started flying everywhere!?

More specifically, the keys (form field NAME attributes) seem to be gone. Here's the code:

foreach($_POST as $key => $qty)
{
// Determine $item_id
list($forget, $item_id) = explode("_", $key);

[ ... ]

}
And the error is on the explode function, as it thinks $key is undefined. Of course, everything is just peachy when a regular submit button is used. I'm at a loss.

I didn't really have time to debug anything, and I've moved on from it for now. But I'll come back and try that later.