573247 Upload File From Link: PHP 2

I need a little code to upload a file from a link and then treat as a $_FILES['filelink'].. so it can be processed through my script. so the url will be posted and will show as if(!$_FILES['file']){ $file = $_POST['filelink']; } else { $file = $_FILES['file']; } then it needs to be coded here so its ready for the next stage if (!isset($_FILES["file"])) bark("missing form data"); $f = $file; //$_FILES["file"]; $fname = unesc($f["name"]); if (empty($fname)) bark("Empty filename!"); if (eregi("http:", $fname) || eregi("www\.", $fname)) bark("Filename cannot contain a URL!"); $tmpname = $f["tmp_name"]; if (!is_uploaded_file($tmpname)) bark("eek");