On each insertion of a portal news item
php function needs to write to the file rss.xml in the webroot directory
<?xml version="1.0" encoding="iso-8859-1" ?>
<rss version="2.0">
<channel>
<title>Bushtarion</title>
<link>http://www.bushtarion.com</link>
<description>Bushtarion - Announcements</description>
// for each news item (last 10)
<item>
<title>$title</title>
<pubDate>$unixtime</pubDate>
<link>$link</link>
<description>$shortdescription</description>
</item>
//
</channel>
</rss>
On the portal news page add
<link rel="alternate" type="application/rss+xml" title="Bushtarion RSS Feed" href="rss.xml" >
in the <head> section