PHP implementation code for querying website PR value

/*
* Function: Encode URL
* Parameter description: $web_url website URL, does not contain "http://"
* site: bbs.it-home.org
 */
function HashURL($url)
{
 $SEED = "Mining PageRank is AGAINST GOOGLE'S TERMS OF SERVICE. Yes, I'm talking to you, scammer.";
 $Result = 0x01020345;
 for ($i= 0; $i {
 $Result ^= ord($SEED{$i%87}) ^ ord($url{$i});
 $Result = (($ Result >> 23) & 0x1FF) | $Result << 9;
 }
 return sprintf("8%x", $Result);
}
/*
*Function: query based on pr provided by google Interface to obtain pagerank
* Parameter description: $domain website domain name, does not include "http://"
*/
function pagerank($domain)
{
 $StartURL = "http://toolbarqueries.google.com/tbr? client=navclient-auto&features=Rank:&q=info:";
 $GoogleURL = $StartURL.$domain. '&ch='.HashURL($domain);
 echo $GoogleURL.'';
 $fcontents = file_get_contents("$GoogleURL");
 $pagerank = substr($fcontents,9);
 if (!$pagerank) return "0";else return $pagerank;
}
echo pagerank("phpddt.com") ;
?>