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Filename : unserializeRDF.php
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<?PHP
/**
 * This example shows how to create any object
 * from an XML document. In this case we get
 * some aggregated objects for channel and items
 * from an RSS feed.
 *
 * @author  Stephan Schmidt <schst@php.net>
 */
error_reporting(E_ALL);

require_once 'XML/Unserializer.php';

/**
* class for the RDF docuemnt
*
*
*/
class rdfDocument
{
    var $channel;
    var $item;

    function getItems($amount)
    {
        return array_splice($this->item,0,$amount);
    }
}


/**
* class that is used for a channel in the RSS file
*
* you could implement whatever you like in this class,
* properties will be set from the XML document
*/
class channel
{
    function getTitle()
    {
        return  $this->title;
    }
}

/**
* class that is used for an item in the RSS file
*
* you could implement whatever you like in this class,
* properties will be set from the XML document
*/
class item
{
    function getTitle()
    {
        return  $this->title;
    }
}


$options = array(
                 XML_UNSERIALIZER_OPTION_COMPLEXTYPE => 'object',
                 XML_UNSERIALIZER_OPTION_TAG_MAP     => array(
                                                            'rdf:RDF' => 'rdfDocument',   // this is used to specify a classname for the root tag
                                                        )
                );

//  be careful to always use the ampersand in front of the new operator 
$unserializer = &new XML_Unserializer($options);

$status = $unserializer->unserialize('http://pear.php.net/feeds/latest.rss',true);    

if (PEAR::isError($status)) {
    echo 'Error: ' . $status->getMessage();
} else {
    $rss = $unserializer->getUnserializedData();

    echo 'This has been returned by XML_Unserializer:<br>';
    
    echo '<pre>';
    print_r($rss);
    echo '</pre>';

    echo '<br><br>Root Tagname: '.$unserializer->getRootName().'<br>';
    
    echo 'Title of the channel: '.$rss->channel->getTitle().'<br>';

    $items = $rss->getItems(3);
    echo '<br>Titles of the last three releases:<br>';
    foreach ($items as $item) {
        echo 'Title : '.$item->getTitle().'<br>';
    }
}
?>