查GOOGLE pr值的函数,怎么用呢?<br />
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<?php<br />
//下面的函数用于查pr<br />
function zeroFill($a, $b) <br />
{ <br />
$z = hexdec(80000000); <br />
if ($z & $a) <br />
{ <br />
$a = ($a>>1); <br />
$a &= (~$z); <br />
$a |= 0x40000000; <br />
$a = ($a>>($b-1)); <br />
} <br />
else <br />
{ <br />
$a = ($a>>$b); <br />
} <br />
return $a; <br />
} <br />
<br />
function mix($a,$b,$c) <br />
{ <br />
$a -= $b; $a -= $c; $a ^= (zeroFill($c,13)); <br />
$b -= $c; $b -= $a; $b ^= ($a<<8); <br />
$c -= $a; $c -= $b; $c ^= (zeroFill($b,13)); <br />
$a -= $b; $a -= $c; $a ^= (zeroFill($c,12)); <br />
$b -= $c; $b -= $a; $b ^= ($a<<16); <br />
$c -= $a; $c -= $b; $c ^= (zeroFill($b,5)); <br />
$a -= $b; $a -= $c; $a ^= (zeroFill($c,3)); <br />
$b -= $c; $b -= $a; $b ^= ($a<<10); <br />
$c -= $a; $c -= $b; $c ^= (zeroFill($b,15)); <br />
return array($a,$b,$c); <br />
} <br />
<br />
function GoogleCH($url, $length=null, $init=GOOGLE_MAGIC) <br />
{ <br />
if(is_null($length)) <br />
{ <br />
$length = sizeof($url); <br />
} <br />
$a = $b = 0x9E3779B9; <br />
$c = $init; <br />
$k = 0; <br />
$len = $length; <br />
while($len >= 12) <br />
{ <br />
$a += ($url[$k+0] +($url[$k+1]<<8) +($url[$k+2]<<16) +($url[$k+3]<<24)); <br />
$b += ($url[$k+4] +($url[$k+5]<<8) +($url[$k+6]<<16) +($url[$k+7]<<24)); <br />
$c += ($url[$k+8] +($url[$k+9]<<8) +($url[$k+10]<<16)+($url[$k+11]<<24)); <br />
$mix = mix($a,$b,$c); <br />
$a = $mix[0]; $b = $mix[1]; $c = $mix[2]; <br />
$k += 12; <br />
$len -= 12; <br />
} <br />
$c += $length; <br />
switch($len) <br />
{ <br />
case 11: $c+=($url[$k+10]<<24); <br />
case 10: $c+=($url[$k+9]<<16); <br />
case 9 : $c+=($url[$k+8]<<8); <br />
case 8 : $b+=($url[$k+7]<<24); <br />
case 7 : $b+=($url[$k+6]<<16); <br />
case 6 : $b+=($url[$k+5]<<8); <br />
case 5 : $b+=($url[$k+4]); <br />
case 4 : $a+=($url[$k+3]<<24); <br />
case 3 : $a+=($url[$k+2]<<16); <br />
case 2 : $a+=($url[$k+1]<<8); <br />
case 1 : $a+=($url[$k+0]); <br />
} <br />
$mix = mix($a,$b,$c); <br />
return $mix[2]; <br />
} <br />
<br />
function strord($string) { <br />
for($i=0;$i<strlen($string);$i++) { <br />
$result[$i] = ord($string{$i}); <br />
} <br />
return $result; <br />
} <br />
<br />
function ReadPR($link) <br />
{ <br />
$fp = fsockopen ("www.google.com", 80, $errno, $errstr, 30); <br />
if (!$fp) <br />
{ <br />
echo "$errstr ($errno)\n"; <br />
exit(1); <br />
} <br />
else <br />
{ <br />
$out = "GET $link HTTP/1.0\r\n"; <br />
$out .= "Host: toolbarqueries.google.com\r\n"; <br />
$out .= "User-Agent: Mozilla/4.0 (compatible; GoogleToolbar 2.0.114.9-big; Linux 2.6)\r\n"; <br />
$out .= "Connection: Close\r\n\r\n"; <br />
fwrite($fp, $out); <br />
do{ <br />
$line = fgets($fp, 128); <br />
}while ($line !== "\r\n"); <br />
$data = fread($fp,8192); <br />
fclose ($fp); <br />
return $data; <br />
} <br />
}<br />
<br />
function GetPR($url) <br />
{ <br />
$url ='info:'.$url; <br />
$ch = GoogleCH(strord($url)); <br />
$data = ReadPR("/search?client=navclient-auto&ch=6$ch&features=Rank&q=$url");<br />
$data = str_replace("1ex}div.nav A {font-size","",$data ); <br />
$rankarray = explode (':', $data); <br />
if(trim($rankarray[2])!=""){<br />
return $rankarray[2];<br />
}<br />
else<br />
return "0";<br />
} <br />
?>