PHP学习：PHP解析RSS的方法

<?php
require "XML/RSS.php";
$rss = new XML_RSS("http://php.net/news.rss");
$rss->parse();
foreach($rss->getItems() as $item) {
  print_r($item);
}
?>

<?php
$database =  "nameofthedatabase";
$dbconnect = mysql_pconnect(localhost, dbuser, dbpassword);
mysql_select_db($database, $dbconnect);
$query = "select link, headline, description from `headlines` limit 15";
$result = mysql_query($query, $dbconnect);
while ($line = mysql_fetch_assoc($result))
{
    $return[] = $line;
}
$now = date("D, d M Y H:i:s T");
$output = "<?xml version=\"1.0\"?>
    <rss version=\"2.0\">
 <channel>
     <title>Our Demo RSS</title>
     <link>http://www.tracypeterson.com/RSS/RSS.php</link>
     <description>A Test RSS</description>
     <language>en-us</language>
     <pubDate>$now</pubDate>
     <lastBuildDate>$now</lastBuildDate>
     <docs>http://someurl.com</docs>
     <managingEditor>you@youremail.com</managingEditor>
     <webMaster>you@youremail.com</webMaster>
    ";
foreach ($return as $line)
{
    $output .= "<item><title>".htmlentities($line['headline'])."</title>
                    <link>".htmlentities($line['link'])."</link>
<description>".htmlentities(strip_tags($line['description']))."</description>
                </item>";
}
$output .= "</channel></rss>";
header("Content-Type: application/rss+xml");
echo $output;
?>