PHP SDK-Litle Void Transaction

gistfile1.aw

<?php
require_once realpath(dirname(__FILE__)) . '/../lib/LitleOnline.php';

#Void

$void_info = array(
        'litleTxnId'=>'100000000000000001',
        'id'=> '456'
	);

$initilaize = &new LitleOnlineRequest(); 
$voidResponse = $initilaize->voidRequest($void_info);

#display results
echo ("Response: " . (XmlParser::getNode($voidResponse ,'response')) . "<br>");
echo ("Message: " . XmlParser::getNode($voidResponse ,'message') . "<br>");
echo ("Litle Transaction ID: " . XmlParser::getNode($voidResponse ,'litleTxnId'));

Just a heads up, the link to this gist is broken...
It seems like this gist should be linked at the bottom of this page (see the Void PHP Example link): http://litleco.github.io/processing-overview/
(instead it links to a non-existent gist)