Upload File From Link: Php

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 fi…