Merge feeds in PHP with simplepie

merge_feeds_with_simplepie.php

<?php print '<?xml version="1.0" encoding="UTF-8"?>'; ?>

<rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/">
<channel>
<title>FierceWireless</title>
<link>http://www.fiercewireless.com</link>
<description>
The latest wireless industry news from FierceWireless
</description> 
<language>en-us</language> 

<?php
// Include the SimplePie library
require_once('simplepie.inc');
 
// Create a new SimplePie object
$feed = new SimplePie();
$feed->cache = FALSE;
 
// Instead of only passing in one feed url, we'll pass in an array of three
$feed->set_feed_url(array(
	'http://www.fiercewireless.com/feed?realfeed',
	'http://www.fiercewireless.com/europe/feed',
));

// Initialize the feed object
$feed->init();
 
// This will work if all of the feeds accept the same settings.
$feed->handle_content_type();
?>
<?php $itemcount = 0; ?>
<?php foreach($feed->get_items() as $item): ?>
<item>
    <?php
        
        foreach($item->data['child'][''] as $key => $value) {
            //var_dump($value);
            foreach($value as $idx => $data) {
                print "<$key";
                $attribs = @$data['attribs'][''];
                if($attribs) {
                    foreach($attribs as $attrib_name => $attrib_value) {
                        print " $attrib_name=\"" . htmlspecialchars($attrib_value) . "\"";
                    }
                }
                print ">";
                print htmlspecialchars($data['data']);
                print "</$key>\n";
            }
        }
    ?>
</item>
<?php if($itemcount++ > 30) { break; } ?>
<?php endforeach; ?>

</channel>
</rss>