I used to use Google Toolbar in order to check Google PageRank of web page I like but this way doesn’t work any more since I’ve upgraded Firefox to a higher version. And I can’t find any official API from Google that mention about getting Google PageRank.
Fortunately, I found another way to check Google PageRank with PHP script. And this article gives all the necessary functions and source codes.
PHP Query Google PageRank Function
Note: I won’t explain about these functions (StrToNum, HashURL and CheckHash) as I don’t create them. I just know that it works 🙂
<?php function get_google_pagerank($url) { $query="http://toolbarqueries.google.com/tbr?client=navclient-auto&ch=".CheckHash(HashURL($url)). "&features=Rank&q=info:".$url."&num=100&filter=0"; $data=file_get_contents($query); $pos = strpos($data, "Rank_"); if($pos === false){} else{ $pagerank = substr($data, $pos + 9); return $pagerank; } } function StrToNum($Str, $Check, $Magic) { $Int32Unit = 4294967296; // 2^32 $length = strlen($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 $Check; } function HashURL($String) { $Check1 = StrToNum($String, 0x1505, 0x21); $Check2 = StrToNum($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 | $T2); } function CheckHash($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; } ?> |
Example
<?php $url='http://4rapiddev.com/'; echo "$url has Google PageRank: ". get_google_pagerank($url) ; ?> |
Output
http://4rapiddev.com/ has Google PageRank: 1 |
+ Download all source codes above
+ Tool Check Google Page Rank Online
