php生成rss订阅

代码：

<?php
$host = $_SERVER['HTTP_HOST']; 
$xmls = '<?xml version="1.0" encoding="utf-8"?> 
<rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/" 
xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/"> 
<channel>'; 
foreach ($news as $keys => $values) { 
//foreach ($values as $key1 => $value1) { 
$xmls .= "<item><title>".$values["title"]."</title>";  
        $xmls .= "<link>http://$host/news.php?id=".$values['id']."</link>"; 
        //$xmls .= "<description><![$value1[description]]></description>"; 
        //$xmls .= "<pubDate>".$values["addtime"]."</pubDate>"; 
        $xmls .= "<dc:creator>$host</dc:creator>"; 
        //$xmls .= "<description>".$values["addtime"]."</description>"; 
        $xmls .=  "<category><![CDATA[".$values["content"]."]]></category></item>"; 
        //$xmls .= "</channel>"; 
//} 
} 
$xmls .= "</channel></rss>"; 
echo $xmls; 

?>

来源：http://www.bcty365.com/content-10-3078-1.html