A PHP script to let users download a file from my website without revealing the actual file link in my website?

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Find a way to identify the file to download (for instance, a GET variable that matches the ID of a row in a database, or something along these lines). Make damn sure it’s a valid one, because you don’t want your users to be able to download anything off your site. Then, use header with Content-Disposition to tell the browser the file should be downloaded, and readfile to output it.

For instance:

<?php

$id = intval($_GET['id']);
$query = mysql_query('SELECT file_path FROM files WHERE id = ' . $id);
if (($row = mysql_fetch_row($query)) !== false)
{
    header('Content-Disposition: attachment; filename=" . basename($row[0]));
    readfile($row[0]);
}
exit;

?>

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