Detect If Download Is Complete

I have a very simple and standard PHP force download script. How do I check if/when the download has completed in order to notify the user on the clientside? I don't even need to

Solution 1:

Check out this Sitepoint Forum Post that describes the solution.

Basically, once the while loop breaks, you're done!

Here's the full thread that describes using an AJAX poll to detect when the download is complete: http://www.sitepoint.com/forums/showthread.php?t=618233