magpierss是一个很好的rss解析类，它完全支持rss 0.9 - 1.0, 部分支持 rss 2.0。
* supports rss 0.9 - 1.0, with limited rss 2.0 support
* supports namespaces, and modules, including mod_content and mod_event
* open minded [1]
* simple, functional interface, to object oriented backend parser
* automatic caching of parsed rss objects makes its easy to integrate
* supports conditional get with last-modified, and etag
* uses constants for easy override of default behaviour
* heavily commented
php新闻聚合工具lilina使用的rss解析器就是magpierss。
这个东西使用起来很简单，下边是官方的一个例子：
require_once(rss_fetch.inc);
$url = $_get['url'];
$rss = fetch_rss( $url );
echo
channel title: . $rss->channel['title'] . ;
echo ;
foreach ($rss->items as $item) {
$href = $item['link'];
$title = $item['title'];
echo
$title ;
}
echo ;