Parsing Twitter feeds with SimpleXML is quite a simple task. First of all, you need the URL of your Twitter RSS/Atom feed. Then you can use SimpleXML as follows:
$tweets = simplexml_load_file('http://twitter.com/statuses/user_timeline/120345723.rss');
foreach($tweets->channel->item as $tweet) {
$raw_title = $tweet->title;
$title = str_replace('gabromanato:', '', $raw_title);
$title = preg_replace('/http.+/', '', $title);
$raw_date = $tweet->pubDate;
$date = str_replace('+0000', '', $raw_date);
$link = $tweet->link;
echo '<li><a href="' . $link . '">' . $title . '</a>' . "\n" . '<div class="pubdate">' . $date . '</div>' . "\n" . "</li>\n";
}
I've only removed some unnecessary strings using str_replace() and preg_replace(). You can see the final result here.