<?php
header("Content-Type: application/rss+xml; charset=iso-8859-9");
$sonuc = mysql_query("Select baslik From keyword ORDER BY tarih DESC limit 0, 100"); 
echo '
<?xml version="1.0" encoding="iso-8859-9"?>
<rss version="0.92" xml:lang="TR">
<channel>
		<title>Buraya Title Gelecek</title>
			<description><![CDATA[Site Açıklaması]]></description>';
';
while ($sorgu = mysql_fetch_array($sonuc)) {
echo '<item><title><![CDATA['.str_replace("&","&amp;",$sorgu["baslik"]).']]></title>
				<link>http://www.siteismi.com/'.$baslik.'</link>
				<description>
					<![CDATA[BURAYA İÇERİK GELECEK]]>
				</description>
				<category><![CDATA[KATEGORİ]]></category>
				<pubDate>EveryTime</pubDate>
				</item>';
}
echo '
				</channel>
			</rss>
';
?>
şeklinde yapabilirsin.