32-64 bit olayını bir ara çözmüştük, google PR fonksiyonunu değiştirebilirsin.

//---------------------------------------------------------------------
// GOOGLE PageRank functions
//
define('GOOGLE_MAGIC', 0xE6359A60);
function toInt32(& $x)
{
    $z = hexdec(80000000);
    $y = (int)$x;
    // on 64bit OSs if $x is double, negative ,will return -$z in $y
    // which means 32th bit set (the sign bit)
    if ($y==-$z && $x<-$z) {
        $y = (int)((-1)*$x);// this is the hack, make it positive before
        $y = (-1)*$y; // switch back the sign
    }
    $x = $y;
}  
function zeroFill($a, $b)
{
    $z = hexdec(80000000);
    if ($z & $a) {
        $a = ($a>>1);
        $a &= (~$z);
        $a |= 0x40000000;
        $a = ($a>>($b-1));
    } else {
        $a = ($a>>$b);
    }
    return $a;
}
function mix($a,$b,$c)
{
    $a -= $b; $a -= $c; toInt32($a); $a = (int)($a ^ (zeroFill($c,13)));
    $b -= $c; $b -= $a; toInt32($b); $b = (int)($b ^ ($a<<8));
    $c -= $a; $c -= $b; toInt32($c); $c = (int)($c ^ (zeroFill($b,13)));
    $a -= $b; $a -= $c; toInt32($a); $a = (int)($a ^ (zeroFill($c,12)));
    $b -= $c; $b -= $a; toInt32($b); $b = (int)($b ^ ($a<<16));
    $c -= $a; $c -= $b; toInt32($c); $c = (int)($c ^ (zeroFill($b,5)));
    $a -= $b; $a -= $c; toInt32($a); $a = (int)($a ^ (zeroFill($c,3)));
    $b -= $c; $b -= $a; toInt32($b); $b = (int)($b ^ ($a<<10));
    $c -= $a; $c -= $b; toInt32($c); $c = (int)($c ^ (zeroFill($b,15)));
    return array($a,$b,$c);
}
function GoogleCH($url, $length=null, $init=GOOGLE_MAGIC)
{
    if(is_null($length)) {
        $length = sizeof($url);
    }
    $a = $b = 0x9E3779B9;
    $c = $init;
    $k = 0;
    $len = $length;
    while($len >= 12) {
        $a += ($url[$k+0] +($url[$k+1]<<8) +($url[$k+2]<<16) +($url[$k+3]<<24));
        $b += ($url[$k+4] +($url[$k+5]<<8) +($url[$k+6]<<16) +($url[$k+7]<<24));
        $c += ($url[$k+8] +($url[$k+9]<<8) +($url[$k+10]<<16)+($url[$k+11]<<24));
        $mix = mix($a,$b,$c);
        $a = $mix[0]; $b = $mix[1]; $c = $mix[2];
        $k += 12;
        $len -= 12;
    }
    $c += $length;
    switch($len) {
        case 11: $c+=($url[$k+10]<<24);
        case 10: $c+=($url[$k+9]<<16);
        case 9 : $c+=($url[$k+8]<<8);
        case 8 : $b+=($url[$k+7]<<24);
        case 7 : $b+=($url[$k+6]<<16);
        case 6 : $b+=($url[$k+5]<<8);
        case 5 : $b+=($url[$k+4]);
        case 4 : $a+=($url[$k+3]<<24);
        case 3 : $a+=($url[$k+2]<<16);
        case 2 : $a+=($url[$k+1]<<8);
        case 1 : $a+=($url[$k+0]);
    }
    $mix = mix($a,$b,$c);
    return ($mix[2] < 0 ) ? (4294967296 + $mix[2]) : $mix[2];
}
function strord($string)
{
    for($i=0;$i<strlen($string);$i++) {
        $result[$i] = ord($string{$i});
    }
    return $result;
}
function c32to8bit($arr32)
{
    for($i=0;$i<count($arr32);$i++) {
        for ($bitOrder=$i*4;$bitOrder<=$i*4+3;$bitOrder++) {
            $arr8[$bitOrder]=$arr32[$i]&255;
            $arr32[$i]=zeroFill($arr32[$i], 8);
        }
    }
    return $arr8;
}
function GoogleNewCH($ch)
{
    $ch = ((($ch/7) << 2) | (((int)fmod($ch,13))&7));
    $prbuf = array();
    $prbuf[0] = $ch;
    for($i = 1; $i < 20; $i++) {
        $prbuf[$i] = $prbuf[$i-1]-9;
    }
    $ch = GoogleCH(c32to8bit($prbuf), 80);
    return $ch;
}
function GooglePageRank($url)
{
    $url = 'info:' . $url;
    $ch = GoogleCH(strord($url));
    $ch = "6".GoogleNewCH($ch);
    $q = "http://toolbarqueries.google.com/search?client=navclient-auto&ch=".$ch."&ie=UTF-8&oe=UTF-8&features=Rank&q=".$url;
	// CURL kullanımı: http://www.phptrcms.com/makale-oku/176-Php+ve+Curl
	// Eğer CURL yüklü ise
    if (extension_loaded('curl')) {
        $header[] = "User-Agent: Mozilla/4.0 (compatible; GoogleToolbar 2.0.114-big; Windows XP 5.1)\r\n";
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL,$q);
        curl_setopt($ch, CURLOPT_VERBOSE, 1);
        curl_setopt($ch, CURLOPT_POST, 0);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
        curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
        $returned = curl_exec($ch);
        curl_close ($ch); // CURL oturumu kapat
    } 
	// CURL yüklü değil ise
	else {
        $returned = file_get_contents($q);
    }
    preg_match("/Rank_.*?:.*?:(\d+)/i", $returned, $matches);
    return isset($matches[1]) ? $matches[1] : 0;
}
//
// GOOGLE PageRank functions
//---------------------------------------------------------------------

kullanımı:
$pagerank = GooglePageRank($website);