$u = explode('_', $url);
$id = $u[0];

$downs = DB::run() -> queryFetch("SELECT * FROM downs WHERE url=? LIMIT 1;", array($url));

$file = "files/".$downs['downs_link'];

DB::run() -> query("UPDATE downs SET url=? WHERE downs_id=?", array(NULL, $id));

$name = basename($file);

header('Content-Type: application/octet-stream');
header('Content-disposition: filename="'.$name);

readfile($file);