• User Attivo

    Errore script per calcolare automaticamente il pagerank

    Salve, io ho questo codice php:

    [php]<?php
    //error_reporting(E_ALL);

    define('GOOGLE_MAGIC', 0xE6359A60);

    //unsigned shift right
    function zeroFill($a, $b)
    {
    $z = hexdec(80000000);
    if ($z & $a)
    {
    $a = ($a>>1);
    $a &= (~$z);
    $a |= 0x40000000;
    $a = ($a>>($b-1));
    }
    else
    {
    $a = ($a>>$b);
    }
    return $a;
    }
    function mix($a,$b,$c)
    {
    $a -= $b; $a -= $c; $a ^= (zeroFill($c,13));
    $b -= $c; $b -= $a; $b ^= ($a<<8);
    $c -= $a; $c -= $b; $c ^= (zeroFill($b,13));
    $a -= $b; $a -= $c; $a ^= (zeroFill($c,12));
    $b -= $c; $b -= $a; $b ^= ($a<<16);
    $c -= $a; $c -= $b; $c ^= (zeroFill($b,5));
    $a -= $b; $a -= $c; $a ^= (zeroFill($c,3));
    $b -= $c; $b -= $a; $b ^= ($a<<10);
    $c -= $a; $c -= $b; $c ^= (zeroFill($b,15));

    return array($a,$b,$c);
    }

    function GoogleCH($url, $length=null, $init=GOOGLE_MAGIC)
    {
    if(is_null($length))
    {
    $length = sizeof($url);
    }
    $a = $b = 0x9E3779B9;
    $c = $init;
    $k = 0;
    $len = $length;
    while($len >= 12)
    {
    $a += ($url[$k+0] +($url[$k+1]<<8) +($url[$k+2]<<16) +($url[$k+3]<<24));
    $b += ($url[$k+4] +($url[$k+5]<<8) +($url[$k+6]<<16) +($url[$k+7]<<24));
    $c += ($url[$k+8] +($url[$k+9]<<8) +($url[$k+10]<<16)+($url[$k+11]<<24));
    $mix = mix($a,$b,$c);
    $a = $mix[0]; $b = $mix[1]; $c = $mix[2];
    $k += 12;
    $len -= 12;
    }

    $c += $length;
    switch($len) /* all the case statements fall through /
    {
    case 11: $c+=($url[$k+10]<<24);
    case 10: $c+=($url[$k+9]<<16);
    case 9 : $c+=($url[$k+8]<<8);
    /
    the first byte of c is reserved for the length /
    case 8 : $b+=($url[$k+7]<<24);
    case 7 : $b+=($url[$k+6]<<16);
    case 6 : $b+=($url[$k+5]<<8);
    case 5 : $b+=($url[$k+4]);
    case 4 : $a+=($url[$k+3]<<24);
    case 3 : $a+=($url[$k+2]<<16);
    case 2 : $a+=($url[$k+1]<<8);
    case 1 : $a+=($url[$k+0]);
    /
    case 0: nothing left to add /
    }
    $mix = mix($a,$b,$c);
    /
    -------------------------------------------- report the result */
    return $mix[2];
    }

    //converts a string into an array of integers containing the numeric value of the char
    function strord($string) {
    for($i=0;$i<strlen($string);$i++) {
    $result* = ord($string{$i});
    }
    return $result;
    }

    function ReadPR($link)
    {
    $fp = fsockopen ("google.com", 80, $errno, $errstr, 30);
    //$ip = gethostbyname("google.com");
    //$fp = fsockopen ($ip, 80, $errno, $errstr, 30);

    if (!$fp)
    {
    echo "$errstr ($errno)\n";
    exit(1);
    }
    else
    {
    //$out = "GET $link HTTP/1.1\r\n";
    $out = "GET $link HTTP/1.0\r\n";
    $out .= "Host: toolbarqueries.google.com\r\n";
    $out .= "User-Agent: Mozilla/4.0 (compatible; GoogleToolbar 2.0.114.9-big; Windows 5.2)\r\n";
    $out .= "Connection: Close\r\n\r\n";
    fwrite($fp, $out);

    //while (!feof($fp))
    // echo fgets ($fp,128);

    do{
    $line = fgets($fp, 128);
    }while ($line !== "\r\n");
    $data = fread($fp,8192);
    fclose ($fp);
    return $data;
    }
    }

    function GetPR($url)
    {
    $url ='info:'.$url;
    $ch = GoogleCH(strord($url));
    $data = ReadPR("/search?client=navclient-auto&ch=6$ch&features=Rank&q=$url");
    $rankarray = explode (':', $data);
    return $rankarray[2];
    }

    /* per essere avvisati quando qualcuno richiede il calcolo del PR */

    if ( isset($_POST['url']) && $_POST['url'] !== '' )
    {
    $email = "il mio indirizzo e.mail";
    mail($email, "Page rank checker",
    "Richiesta Page Rank: ".$_POST['url']);

    /* fine allert */

    echo '<div align="center"><table><tr><td align="center">Il PageRank in Google per '.$_POST['url'].' è : '.GetPR($_POST['url']).'<img src="google-page-rank/'.GetPR($_POST['url']).'.jpg"></td></tr></table></div>';

    }
    else
    {
    echo "<form action='' method='post'>"."URL: <input name='url' value='' type='text' size=40> ";
    echo "<input name='submit' type='submit' value='Ottieni il PageRank'></form>";
    }

    ?>[/php]

    serve per calcolare gli attuali pagerank di siti. Tramite un casella di un form s'inserisce l'url e si preme invio, il risultato è apposto soltanto se riesce a calcolarlo mentre se non riesce dovrebbe riportare come risultato "PR-1" . Non è così se non riesce a calcolare mi s'ingrippa lo script.
    Dov'è l'errore?

    Grazie


  • User Attivo

    Nulla?