このサイトから Google PageRank Checker を取得しました: Using PHP to retrieve the Google Pagerank of any domainですが、うまくいきません。
質問 1:受信出力の修正方法を教えてください。
質問 2:読み込み速度が遅いのはなぜですか。どうすれば速くできますか?
デモ: http://codepad.viper-7.com/
<?php
class GooglePR {
function StrToNum($Str, $Check, $Magic)
{
$Int32Unit = 4294967296; // 2^32
$length = strlen($Str);
for ($i = 0; $i < $length; $i++) {
$Check *= $Magic;
/* If the float is beyond the boundaries of integer (usually +/- 2.15e+9 = 2^31),
the result of converting to integer is undefined
refer to http://www.php.net/manual/en/language.types.integer.php */
if ($Check >= $Int32Unit) {
$Check = ($Check - $Int32Unit * (int) ($Check / $Int32Unit));
//if the check less than -2^31
$Check = ($Check < -2147483648) ? ($Check + $Int32Unit) : $Check;
}
$Check += ord($Str{$i});
}
return $Check;
}
// Generate a proper hash for an url
function HashURL($String)
{
$Check1 = $this->StrToNum($String, 0x1505, 0x21);
$Check2 = $this->StrToNum($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 | $T2);
}
// Generate a checksum for the hash
function CheckHash($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 . $HashStr;
}
// Get the Google Pagerank
function getPagerank($url) {
$query = "http://toolbarqueries.google.com/search?client=navclient-auto&ch=" . $this->CheckHash($this->HashURL($url)) . "&features=Rank&q=info:" . $url . "&num=100&filter=0";
$data = $this->file_get_contents_curl($query);
$pos = strpos($data, "Rank_");
if($pos !== false){
$pagerank = substr($data, $pos + 9);
return trim($pagerank);
}
}
// Use curl the get the file contents
function file_get_contents_curl($url) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); // Set curl to return the data instead of printing it to the browser.
curl_setopt($ch, CURLOPT_URL, $url);
$data = curl_exec($ch);
curl_close($ch);
return $data;
}
}
$gpr = new GooglePR();
$pagerank = $gpr->getPagerank('http://www.stackoverflow.com');
echo $pagerank;
?>