serializeWithNamespace.php

<?PHP
/**
 * Example that creates tags with a namespace
 *
 * @author Stephan Schmidt <schst@php.net>
 */
error_reporting(E_ALL);

require_once 'XML/Serializer.php';

$options = array(
                    'indent'         => '  ',
                    'linebreak'      => "\n",
                    'defaultTagName' => 'item',
                    'namespace'      => 'foo'
                );

$foo    =   new stdClass;
$foo->value = 'My value';
$foo->xml   = 'cool';

$foo->obj    = new stdClass;
$foo->arr   = array();
$foo->zero  = 0;

$serializer = &new XML_Serializer($options);

$result = $serializer->serialize($foo);

if( $result === true ) {
    $xml = $serializer->getSerializedData();
}

echo    '<pre>';
print_r( htmlspecialchars($xml) );
echo    '</pre>';

// also pass the URI
$serializer->setOption('namespace', array('bar', 'http://pear.php.net/package/XML_Serializer'));

$result = $serializer->serialize($foo);

if( $result === true ) {
    $xml = $serializer->getSerializedData();
}

echo    '<pre>';
print_r( htmlspecialchars($xml) );
echo    '</pre>';
?>