class PR
{
private function StrToNum($Str, $Check, $Magic)
{
$Int32Unit = 4294967296;
$length = strlen($Str);
for ($i = 0; $i < $length; $i++)
{
$Check *= $Magic;
if ($Check >= $Int32Unit)
{
$Check = ($Check - $Int32Unit * (int) ($Check / $Int32Unit));
$Check = ($Check < -2147483648) ? ($Check + $Int32Unit) : $Check;
}
$Check += ord($Str{$i});
}
return $Check;
}
private function HashURL($String)
{
$Check1 = PR::StrToNum($String, 0x1505, 0x21);
$Check2 = PR::StrToNum($String, 0, 0x1003F);
$Check1 >>= 2;
$Check1 = (($Check1 >> 4) & 0x3FFFFC0 ) | ($Check1 & 0x3F);
$Check1 = (($Check1 >> 4) & 0x3FFC00 ) | ($Check1 & 0x3FF);
$Check1 = (($Check1 >> 4) & 0x3C000 ) | ($Check1 & 0x3FFF);
$T1 = (((($Check1 & 0x3C0) << 4) | ($Check1 & 0x3C)) << 2 ) | ($Check2 & 0xF0F );
$T2 = (((($Check1 & 0xFFFFC000) << 4) | ($Check1 & 0x3C00)) << 0xA) | ($Check2 & 0xF0F0000 );
return ($T1 | $T2);
}
private function CheckHash($Hashnum)
{
$CheckByte = 0;
$Flag = 0;
$HashStr = sprintf('%u', $Hashnum) ;
$length = strlen($HashStr);
for ($i = $length - 1; $i >= 0; $i --)
{
$Re = $HashStr{$i};
if (1 === ($Flag % 2))
{
$Re += $Re;
$Re = (int)($Re / 10) + ($Re % 10);
}
$CheckByte += $Re;
$Flag ++;
}
$CheckByte %= 10;
if (0 !== $CheckByte)
{
$CheckByte = 10 - $CheckByte;
if (1 === ($Flag % 2) )
{
if (1 === ($CheckByte % 2))
{
$CheckByte += 9;
}
$CheckByte >>= 1;
}
}
return '7'.$CheckByte.$HashStr;
}
public function check_pr($url)
{
$ch = curl_init("http://toolbarqueries.google.com/tbr?features=Rank&sourceid=navclient-ff&client=navclient-auto-ff&ch="
."&ch=".$this->CheckHash($this->HashURL($url))."&q=info:$url");
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
$result = curl_exec($ch);
if(curl_errno($ch) != 0)
die("curl_errno(".curl_errno($ch)."), curl_error(".curl_error($ch).")");
curl_close($ch);
return substr($result, 9);
}
}