Need to track downloads from my site -- how?

[Bigin]

You can never know for sure that the user has downloaded a file without any issues.

Maybe you will need to force the file download with PHP using header(), something like this:

Code:

...
header("Content-Type: $type");
header("Content-Transfer-Encoding: Binary");
header("Content-Length:".filesize($location));
header("Content-Disposition: attachment; filename=\"$file\"");
readfile($location);
...

    
And what you can do is to implement an additional step that must be executed after the file is successfully downloaded then you can track that step.