PHP XMLReader class example

data.xml

<?xml version="1.0" encoding="UTF-8"?>
<products>
    <last_updated>2009-11-30 13:52:40</last_updated>
    <product tax="19" name="luxus">
        <element>foo</element>
    </product>
    <product tax="7" name="brot">
        <element>bar</element>
    </product>
</products>

xmlreader_class.php

<?php
$xml = new XMLReader();
$xml->open( 'data.xml' );

while( $xml->read() ) {
  if( 'product' === $xml->name ) {
		printf( '<hr>%3$s ist ein %1$s und hat eine Steuer von %2$d<br>', $xml->name, $xml->getAttribute('tax'), $xml->getAttribute('name') );
		$xml->next();
	}
}

How can you also output the "element" of every "product"?