How to display an RSS feed as a widget (or "badge") using PHP?

I have an RSS feed from a wp blog (link), tunneled through feedburner, that I would like to display as a widget in another website.

The widget display can contain simply the headers ta开发者_开发技巧ken from the feed, and the link to their respective posts. I understand that there are many available web services for creating something like this (a few examples: 1, 2, 3) But they all include a link to themselves, which I would like to save from the widget.

Instead, I would much rather have some php code on my server that will create this widget, so it could later be embedded into the other site like this:

What php code can perform this? (I have seen a similar question which was asked two years ago, but the answers didn't include any examples)

Thanks.

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you can use the widgets from http://www.rssfeedwidget.com/ to display your rss feed.