PHP Alexa Rankı Gösterme

<?php
function AlexaRank($domain){
    $uri = 'http://data.alexa.com/data?cli=10&dat=snbamz&url=';
    $uri .= $domain;
    $xml = simplexml_load_file($uri);

    if (isset($xml->SD[1]->POPULARITY))
    return (int) $xml->SD[1]->POPULARITY->attributes()->TEXT;
}
echo number_format(AlexaRank($_GET["site"]));
?>
dosya.php?site=fatalz.Org