Помогите найти ошибку в скрипте

Скрипт не мой. Брал отсюда: http://www.icemelon.com/php/site_pageranks.htm

Fatal error: Call to undefined function: site_pageranks() in z:\home\test1.ru\ on line 105Код:

<?php

define('GOOGLE_MAGIC', 0xE6359A60);



//unsigned shift right

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; $a ^= (zeroFill($c,13));

    $b -= $c; $b -= $a; $b ^= ($a<<8);

    $c -= $a; $c -= $b; $c ^= (zeroFill($b,13));

    $a -= $b; $a -= $c; $a ^= (zeroFill($c,12));

    $b -= $c; $b -= $a; $b ^= ($a<<16);

    $c -= $a; $c -= $b; $c ^= (zeroFill($b,5));

    $a -= $b; $a -= $c; $a ^= (zeroFill($c,3));

    $b -= $c; $b -= $a; $b ^= ($a<<10);

    $c -= $a; $c -= $b; $c ^= (zeroFill($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) /* all the case statements fall through */

    {

        case 11: $c+=($url[$k+10]<<24);

        case 10: $c+=($url[$k+9]<<16);

        case 9 : $c+=($url[$k+8]<<8);

        /* the first byte of c is reserved for the length */

        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]);

        /* case 0: nothing left to add */

    }

    $mix = mix($a,$b,$c);

    /*-------------------------------------------- report the result */

    return $mix[2];

}



//converts a string into an array of integers containing the numeric value of the char

function strord($string) {

    for($i=0;$i; $html, $m);



    foreach($m[1] AS $url) {

        // check if $domain

        if(preg_match("/^http:\/\/.*$domain/i", $url)) {

            // check if local page

            if(!preg_match('/http:\/\//i', $url))

                $url = "http://www.$domain/$url";

            // get rid of PHPSESSID

            if(preg_match('/(\?PHPSESSID=\w+)$/i', $url, $m2))

                $url = str_replace($m2[1], '', $url);



            // check if url checked

            if(!in_array($url, $_SESSION['urls'])) {

                $_SESSION['urls'][] = $url;

                $pr = google_pagerank($url);

                $pr = trim($pr);

                $_SESSION['pageranks'][$pr][] = $url;



                site_pageranks($url, $domain);

            }

        }

    }

}



session_start();

set_time_limit(0);

site_pageranks('http://www.icemelon.com', 'icemelon.com');

print_r($_SESSION['pageranks']);



?>