Vragen over RSS, PHP

<?php	
ob_start('ob_gzhandler');
header("Content-type: text/xml");
require("../db.php");
require("../function.php");
echo '<?xml version="1.0" encoding="iso-8859-1"?>'; 
echo '<rss version="2.0">';
echo '<channel> 
				<title>NextGamer.nl</title> 
                <language>en-us-nl</language>
               <ttl>24</ttl>
               <lastBuildDate>'.date('F d Y H:i:s.', getlastmod() ).'</lastBuildDate>
                <docs>http://www.nextgamer.nl/rss</docs>
                <generator>NG</generator>
                <category>Laatste nieuws</category>
                <copyright>(c) '.date('Y').' - NextGamer.nl</copyright>'; 
    $data = mysql_query("SELECT * FROM nieuws_berichten ORDER BY id DESC LIMIT 20");
    while($row = mysql_fetch_assoc ($data))
		 {
$bericht = ubbvervangen($row->bericht);
    echo '<item>
           <link>http://www.nextgamer.nl/?pagina=nieuws/lezen&amp;id='.$row['id'].'</link>
                <title>'.htmlspecialchars($row['onderwerp']).'</title>
                    <description>'.htmlspecialchars(substr($row['bericht'], 0, 300)).'</description>
                        <guid>'.$row['id'].'</guid>
						<pubDate>'.date( 'r', strtotime($row['datum'])).'</pubDate>
          </item>';
    }
echo '</channel>
    </rss>    ';
ob_end_flush();
?> 

<?php	
ob_start('ob_gzhandler');
header("Content-type: text/xml");
require("../db.php");
require("../function.php");
echo '<?xml version="1.0" encoding="iso-8859-1"?>'; 
echo '<rss version="2.0">';
echo '<channel> 
				<title>NextGamer.nl</title> 
                <language>en-us-nl</language>
               <ttl>24</ttl>
               <lastBuildDate>'.date('F d Y H:i:s.', getlastmod() ).'</lastBuildDate>
                <docs>http://www.nextgamer.nl/rss</docs>
                <generator>NG</generator>
                <category>Laatste nieuws</category>
                <copyright>(c) '.date('Y').' - NextGamer.nl</copyright>'; 
    $data = mysql_query("SELECT * FROM nieuws_berichten ORDER BY id DESC LIMIT 20");
    while($row = mysql_fetch_assoc ($data))
		 {
$bericht = ubbvervangen($row->bericht);
    echo '<item>
           <link>http://www.nextgamer.nl/?pagina=nieuws/lezen&amp;id='.$row['id'].'</link>
                <title>'.htmlspecialchars($row['onderwerp']).'</title>
                    <description>'.htmlspecialchars(substr($row['bericht'], 0, 300)).'</description>
                        <guid>'.$row['id'].'</guid>
						<pubDate>'.date( 'r', strtotime($row['datum'])).'</pubDate>
          </item>';
    }
echo '</channel>
    </rss>    ';
ob_end_flush();
?>