PHP查PageRank代碼

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簡介:

查看pagerank是對每一個做seo的人是必要的,當然做seo的工具也是必備 組件啦^_^

func_PageRank.php:


<?
/*
Cehek PageRank function
created by kui @20061014
website : kui.name

this funciton need opensocfile funciton support!!!

*/

function PR_StrToNum($Str, $Check, $Magic)

{

$Int32Unit = 4294967296; // 2^32

$length = strlen($Str);

for ($i = 0; $i < $length; $i++) {

$Check *= $Magic;

//If the float is beyond the boundaries of integer (usually +/- 2.15e+9 = 2^31),

// the result of converting to integer is undefined

// refer to http://www.php.net/manual/en/language.types.integer.php

//if (is_float($Check)) {

if ($Check >= $Int32Unit) {

$Check = ($Check $Int32Unit * (int) ($Check / $Int32Unit));

// – 2^31

$Check = ($Check < –2147483647) ? ($Check + $Int32Unit) : $Check;

}

$Check += ord($Str{$i});

}

return $Check;

}

function PR_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);

}

function PR_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;

}

function getPR($domain)

{

ini_set ( “user_agent”, “Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 1.1.4322)” );

$url=“http://toolbarqueries.google.com/search?client=navclient-auto&features=Rank:&q=info:”.$domain.“&ch=”.PR_CheckHash(PR_HashURL($domain));

$con = file_get_contents($url);

ereg (“Rank_[0-9]{1}:[0-9]{1}:([0-9]{1,2})”,$con ,$regs);

return $regs[1];

}

?>