Output Google Pagerank

pagerank.php

<?php

function genhash ($url) {
    $hash = "Mining PageRank is AGAINST GOOGLE'S TERMS OF SERVICE. Yes, I'm talking to you, scammer.";
    $c = 16909125;
    $length = strlen($url);
    $hashpieces = str_split($hash);
    $urlpieces = str_split($url);
    for ($d = 0; $d < $length; $d++) {
        $c = $c ^ (ord($hashpieces[$d]) ^ ord($urlpieces[$d]));
        $c = (($c >> 23) & 0x1ff) | $c << 9;
    }
    $c = -(~($c & 4294967295) + 1);
    return '8' . dechex($c);
}

function pagerank($url) {
    $googleurl = 'http://toolbarqueries.google.com/tbr?client=navclient-auto&ch=' . genhash($url) . '&features=Rank&q=info:' . urlencode($url);
    if(function_exists('curl_init')) {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_HEADER, 0);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_URL, $googleurl);
        $out = curl_exec($ch);
        curl_close($ch);
    } else {
        $out = file_get_contents($googleurl);
    }
    if(strlen($out) > 0) {
        return trim(substr(strrchr($out, ':'), 1));
    } else {
        return -1;
    }
}

echo pagerank('http://www.fusionswift.com/');