php pagerank help
<?php
class pagerank
{
var $url;
function pagerank ($url, $options)
{
$this->url = parse_url('http://' . ereg_replace('^http://', '', $url));
$this->url['full'] = 'http://' . ereg_replace('^http://', '', $url);
echo "additionalinfo = new Array(";
if ($options['pagerank']) {
$this->getPagerank();
}
if ($options['alexaRank']) {
$this->getAlexaRank();
}
if ($options['dmoz']) {
$this->getDmoz();
}
if ($options['backlinksGoogle']) {
$this->getBacklinksGoogle();
}
if ($options['backlinksYahoo']) {
$this->getBacklinksYahoo();
}
if ($options['backlinksMSN']) {
$this->getBacklinksMSN();
}
if ($options['resultsAltaVista']) {
$this->getResultsAltaVista();
}
if ($options['resultsAllTheWeb']) {
$this->getResultsAllTheWeb();
}
if ($options['sitetitle']) {
$this->getSiteTitle();
}
if ($options['thumbnail']) {
$this->getThumbnail();
}
echo ');';
}
function getSiteTitle()
{
//////////////////////// Find Title of a give url ////////////////////////////
$url = $this->url['full'];
@$data=file_get_contents($url);
$title='<font color=red>No title defined!</font>';
$data=str_replace('<TITLE>','<title>',$data);$data=str_replace('</TITLE>','</title>',$data);
$data=str_replace('<Title>','<title>',$data);$data=str_replace('</Title>','</title>',$data);
$iadevar=1;
$excade = explode('<title>',$data);
if(isset($excade[1]))
{
$excade2=explode('</title>',$excade[1]);
if(isset($excade2[1])){$title=trim($excade2[0]);}
}
///////////////////////////////////////////////////////////////////////////////
$value = $title;
echo '"'.$value.'"';
}
function getPage ($url) {
if (function_exists('curl_init')) {
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
@curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
return curl_exec($ch);
} else {
return file_get_contents($url);
}
}
function getPagerank () {
$url = 'info:' . $this->url['host'];
$checksum = $this->checksum($this->strord($url));
$url = 'http://www.google.com/search?client=navclient-auto&ch=6' . $checksum . '&features=Rank&q=' . $url;
$data = $this->getPage($url);
preg_match('#Rank_[0-9]:[0-9]:([0-9]+){1,}#si', $data, $p);
$value = ($p[1]) ? $p[1] : 0;
echo '"'.$value.'",';
}
function getAlexaRank() {
$url = $this->url['host'];
$url = "http://data.alexa.com/data?cli=10&dat=s&url=$url";
$data = $this->getPage($url);
preg_match('#<POPULARITY URL="(.*?)" TEXT="([0-9]+){1,}"/>#si', $data, $p);
$value = ($p[2]) ? number_format($this->toInt($p[2])) : 0;
echo '"'.$value.'",';
}
function getDmoz() {
$url = ereg_replace('^www\\.', '', $this->url['host']);
$url = "http://search.dmoz.org/cgi-bin/search?search=$url";
$data = $this->getPage($url);
if (ereg('<center>No <b><a href="http://dmoz\\.org/">Open Directory Project</a></b> results found</center>', $data)) {
$value = '0';
} else {
$value = '1';
}
echo '"'.$value.'",';
}
function getBacklinksGoogle() {
$uri = $this->url['host'];
$uri = trim(eregi_replace('http://', '', $uri)); $uri = trim(eregi_replace('http', '', $uri));
$url = 'http://www.google.com/search?hl=en&lr=&ie=UTF-8&q=link:'.$uri.'&filter=0';
$v = $this->file_get_contents_curl($url);
// preg_match("/of about <b\\>(.*?)\\<\\/b\\>/si",$v,$r);
// preg_match("/of <b\\>(.*?)\\<\\/b\\>/si",$v,$s);
preg_match('/<div id=resultStats>About ([0-9,]+) results<nobr>/',$v,$s);
echo ($s[1]) ? "\\"".$s[1]."\\", " : '"0", ';
/*
$url = 'http://www.google.com/search?hl=en&lr=&ie=UTF-8&q=link:'.$url.'&filter=0';
$data = $this->getPage($url);
preg_match("/<div id=resultStats>([A-Za-z]+ |)([0-9,]+) result/si",$data,$r);
$value = ($p[1]) ? number_format($this->toInt($p[1])) : 0;
echo '"'.$value.'",';*/
}
function file_get_contents_curl($url) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_URL, $url);
$data = curl_exec($ch);
curl_close($ch);
return $data;
}
function getBacklinksYahoo() {
$url = $this->url['host'];
$url = 'http://siteexplorer.search.yahoo.com/search?p=' . urlencode("http://$url") . '&bwm=i';
$data = $this->getPage($url);
preg_match('#Inlinks \\(([0-9,]+){1,}\\)#si', strip_tags($data), $p);
$value = ($p[1]) ? number_format($this->toInt($p[1])) : 0;
echo '"'.$value.'",';
}
function getBacklinksMSN() {
$url = $this->url['host'];
$url = 'http://search.live.com/results.aspx?q=link%3A' . urlencode($url);
$data = $this->getPage($url);
preg_match('#1 of ([0-9,]+){1,}#si', $data, $p);
$value = ($p[1]) ? number_format($this->toInt($p[1])) : 0;
echo '"'.$value.'",';
}
function getResultsAltaVista() {
$url = $this->url['host'];
$url = 'http://www.altavista.com/web/results?q=' . urlencode($url);
$data = $this->getPage($url);
preg_match('#AltaVista found ([0-9,]+){1,} results#si', $data, $p);
$value = ($p[1]) ? number_format($this->toInt($p[1])) : 0;
echo '"'.$value.'",';
}
function getResultsAllTheWeb() {
$url = $this->url['host'];
$url = 'http://www.alltheweb.com/search?q=' . urlencode($url);
$data = $this->getPage($url);
preg_match('#<span class="ofSoMany">([0-9,]+){1,}</span>#si', $data, $p);
$value = ($p[1]) ? number_format($this->toInt($p[1])) : 0;
echo '"'.$value.'",';
}
function getThumbnail() {
$url = urlencode($this->url['host']);
//echo "\ <thumbnail>http://msnsearch.srv.girafa.com/srv/i?s=MSNSEARCH&r=$url</thumbnail>\
";
}
function toInt ($string) {
return preg_replace('#[^0-9]#si', '', $string);
}
function to_int_32 (&$x) {
$z = hexdec(80000000);
$y = (int)$x;
// on 64bit OSs if $x is double, negative ,will return -$z in $y
// which means 32th bit set (the sign bit)
if ($y==-$z && $x<-$z) {
$y = (int)((-1)*$x);// this is the hack, make it positive before
$y = (-1)*$y; // switch back the sign
}
$x = $y;
}
function zero_fill ($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; $this->to_int_32($a); $a = (int)($a ^ ($this->zero_fill($c, 13)));
$b -= $c; $b -= $a; $this->to_int_32($b); $b = (int)($b ^ ($a << 8));
$c -= $a; $c -= $b; $this->to_int_32($c); $c = (int)($c ^ ($this->zero_fill($b, 13)));
$a -= $b; $a -= $c; $this->to_int_32($a); $a = (int)($a ^ ($this->zero_fill($c, 12)));
$b -= $c; $b -= $a; $this->to_int_32($b); $b = (int)($b ^ ($a << 16));
$c -= $a; $c -= $b; $this->to_int_32($c); $c = (int)($c ^ ($this->zero_fill($b, 5)));
$a -= $b; $a -= $c; $this->to_int_32($a); $a = (int)($a ^ ($this->zero_fill($c, 3)));
$b -= $c; $b -= $a; $this->to_int_32($b); $b = (int)($b ^ ($a << 10));
$c -= $a; $c -= $b; $this->to_int_32($c); $c = (int)($c ^ ($this->zero_fill($b, 15)));
return array($a,$b,$c);
}
function checksum ($url, $length = null, $init = 0xE6359A60) {
if (is_null($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 = $this->mix($a, $b, $c);
$a = $mix[0]; $b = $mix[1]; $c = $mix[2];
$k += 12;
$len -= 12;
}
$c += $length;
switch($len) {
case 11: $c += ($url[$k + 10] << 24);
case 10: $c += ($url[$k + 9] << 16);
case 9 : $c += ($url[$k + 8] << 8);
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]);
}
$mix = $this->mix($a, $b, $c);
return ($mix[2] < 0 ) ? (4294967296 + $mix[2]) : $mix[2];
}
function strord ($string) {
for($i = 0; $i < strlen($string); $i++) {
$result[$i] = ord($string{$i});
}
return $result;
}
}
?>