Can someone write a widget for this Flickr rss script?

After searching for months, I found a script that you can run on your server to create a rss feed from your (or anyone’s) flickr favorites! I can’t seem to get it to work as a widget… I tried hacking the Flickrss widget and the rss widget and it’s clear I’m not going to get it to work.

I think there’s a HUGE demand for this (look at the flickr forums for rss favorites)

Anyone?
Script can be found here:

https://www.b3co.com/?c=blog&mode=entry&id=617

<?
if($_GET["user"] == ""){
die("user is required");
}
$u = $_GET["user"];
header("Content-type: application/xml");
echo '<?xml version="1.0" encoding="iso-8859-1"?>';
?>
<rss version="2.0"
xmlns:dc="https://purl.org/dc/elements/1.1/"
xmlns:sy="https://purl.org/rss/1.0/modules/syndication/"
xmlns:admin="https://webns.net/mvcb/"
xmlns:rdf="https://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:content="https://purl.org/rss/1.0/modules/content/">
<channel>
<language>es-mx</language>
<title><?=$u?>'s favorite pictures</title>
<link>https://flickr.com/<?=$u?>/favorites/</link>
<description><?=$u?>'s favorite pictures from flickr, script by b3co.com</description>
<pubDate><?=date("D, j M Y H:i:s")?> -0400</pubDate>
<copyright>b3co.com</copyright>
<managingEditor>[email protected]</managingEditor>
<image>
<title>b3co.com</title>
<url>https://b3co.com/base/logos/b3_flickr.jpg</url>
<link>https://b3co.com/</link>
</image>

<?
$data = implode("",file("https://www.flickr.com/photos/$u/favorites&quot;));
$regexp = "/<a href=\"/photos/(.*)/\" title=\"From (.+)\"><img src=\"(.*)\" border/i";
preg_match_all($regexp, $data, $matches, PREG_SET_ORDER);
for($i = 0; $i < count($matches); $i++){
?>
<item>
<title>Foto de <?=$matches[$i][2]?></title>
<link>https://www.flickr.com/photos/&lt;?=$matches[$i][1]?>/</link>
<content:encoded><![CDATA[<img src="<?=str_replace("_s.jpg","_m.jpg",$matches[$i][3])?>"/>]]></content:encoded>
<pubDate><?=date("D, j M Y H:i:s")?> -0400</pubDate>
<author><?=$matches[$i][2]?> @ flickr.com</author>
</item>
<?
}
?>
</channel>
</rss>