[PHP] Checking if User Completed Download

[FrostWraith]

Is there a way to not only check how many users have clicked the download link, but actually know if they finished it or not? (Other than going into the server log)

[rabbit]

Probably.

[FrostWraith]

Haha. I would be grateful if someone took the time and explained how this would be done.

[Arta]

I doubt it. In any event, it's a non-trivial problem, so I doubt anyone will do the research for you! If you find a way, it would be interesting to hear about it.

[Zorm]

Its probably possible using some combination of fpassthru and connection_aborted. Actually theres a comment in the docs for fpassthru that appear to be capable of doing what you want. http://www.php.net/fpassthru

[Arta]

Neat

[Ersan]

That will cause more problems than it's worth, trust me - especially for large files.

Use fread instead of fpassthru if this is absolutely necessary:

Code Select Expand

<?php
while (!feof($res)) {
$buffer = fread($res, 2048);
echo $buffer;
$bytessent+=strlen($buffer);
}
if ($bytessent == filesize($file)) {
// File completed downloading.
}
?>

This will severely impact performance (though not nearly as much as fpassthru) if your website is high-traffic.