onunload doesn't do anything

This application creates temp files on the server. I want to delete them when the user exits the application.

I accumulate an array of filenames in $_SESSION['deleteRA']. I made 'delete.php' to loop through the list and 'unlink' the files listed there.

'header.php' is included in every screen in the website. So, in 'header.php' I put:

<body  onunload="<?php include 'delete.php'; ?>"> 
<!-- body code -->
</body>

Nothing happened. Charles doesn't indicate any call to 'delete.php'. I fiddled around with quotation marks, too, to no avail.

I hope there's a way to do this, and that someone will point that way out to me.

Thanks (I hope),
Paul

delete.php will be included when the page is first created, not when unloading the page.

you probably need something like

onload='window.location="http://www.w3schools.com" ';