www.gusucode.com > Piwik 网站流量统计系统 v2.9.1PHP源码程序 > Piwik 网站流量统计系统 v2.9.1/piwik/piwik/plugins/SEO/RankChecker.php
<?php
/**
* Piwik - free/libre analytics platform
*
* @link http://piwik.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*
*/
namespace Piwik\Plugins\SEO;
use Exception;
use Piwik\Http;
use Piwik\Log;
use Piwik\MetricsFormatter;
/**
* The functions below are derived/adapted from GetRank.org's
* Free PageRank Script v2.0, released under GPL.
*
* @copyright Copyright (C) 2007 - 2010 GetRank.Org All rights reserved.
* @link http://www.getrank.org/free-pagerank-script/
* @license GPL
*/
class RankChecker
{
private $url;
private $majesticInfo = null;
public function __construct($url)
{
$this->url = self::extractDomainFromUrl($url);
}
/**
* Extract domain from URL as the web services generally
* expect only a domain name (i.e., no protocol, port, path, query, etc).
*
* @param string $url
* @return string
*/
public static function extractDomainFromUrl($url)
{
return preg_replace(
array(
'~^https?\://~si', // strip protocol
'~[/:#?;%&].*~', // strip port, path, query, anchor, etc
'~\.$~', // trailing period
),
'', $url);
}
/**
* Web service proxy that retrieves the content at the specified URL
*
* @param string $url
* @return string
*/
private function getPage($url)
{
try {
return str_replace(' ', ' ', Http::sendHttpRequest($url, $timeout = 10, @$_SERVER['HTTP_USER_AGENT']));
} catch (Exception $e) {
return '';
}
}
/**
* Returns the google page rank for the current url
*
* @return int
*/
public function getPageRank()
{
$chwrite = $this->CheckHash($this->HashURL($this->url));
$url = "http://toolbarqueries.google.com/tbr?client=navclient-auto&ch=" . $chwrite . "&features=Rank&q=info:" . $this->url . "&num=100&filter=0";
$data = $this->getPage($url);
preg_match('#Rank_[0-9]:[0-9]:([0-9]+){1,}#si', $data, $p);
$value = isset($p[1]) ? $p[1] : 0;
return $value;
}
/**
* Returns the alexa traffic rank for the current url
*
* @return int
*/
public function getAlexaRank()
{
$xml = @simplexml_load_string($this->getPage('http://data.alexa.com/data?cli=10&url=' . urlencode($this->url)));
return $xml ? $xml->SD->POPULARITY['TEXT'] : '';
}
/**
* Returns the number of Dmoz.org entries for the current url
*
* @return int
*/
public function getDmoz()
{
$url = 'http://www.dmoz.org/search?q=' . urlencode($this->url);
$data = $this->getPage($url);
preg_match('#Open Directory Sites[^\(]+\([0-9]-[0-9]+ of ([0-9]+)\)#', $data, $p);
if (!empty($p[1])) {
return (int)$p[1];
}
return 0;
}
/**
* Returns the number of pages google holds in it's index for the current url
*
* @return int
*/
public function getIndexedPagesGoogle()
{
$url = 'http://www.google.com/search?hl=en&q=site%3A' . urlencode($this->url);
$data = $this->getPage($url);
if (preg_match('#([0-9\,]+) results#i', $data, $p)) {
$indexedPages = (int)str_replace(',', '', $p[1]);
return $indexedPages;
}
return 0;
}
/**
* Returns the number of pages bing holds in it's index for the current url
*
* @return int
*/
public function getIndexedPagesBing()
{
$url = 'http://www.bing.com/search?mkt=en-US&q=site%3A' . urlencode($this->url);
$data = $this->getPage($url);
if (preg_match('#([0-9\,]+) results#i', $data, $p)) {
return (int)str_replace(',', '', $p[1]);
}
return 0;
}
/**
* Returns the domain age for the current url
*
* @return int
*/
public function getAge()
{
$ageArchiveOrg = $this->_getAgeArchiveOrg();
$ageWhoIs = $this->_getAgeWhoIs();
$ageWhoisCom = $this->_getAgeWhoisCom();
$ages = array();
if ($ageArchiveOrg > 0) {
$ages[] = $ageArchiveOrg;
}
if ($ageWhoIs > 0) {
$ages[] = $ageWhoIs;
}
if ($ageWhoisCom > 0) {
$ages[] = $ageWhoisCom;
}
if (count($ages) > 1) {
$maxAge = min($ages);
} else {
$maxAge = array_shift($ages);
}
if ($maxAge) {
return MetricsFormatter::getPrettyTimeFromSeconds(time() - $maxAge);
}
return false;
}
/**
* Returns the number backlinks that link to the current site.
*
* @return int
*/
public function getExternalBacklinkCount()
{
try {
$majesticInfo = $this->getMajesticInfo();
return $majesticInfo['backlink_count'];
} catch (Exception $e) {
Log::info($e);
return 0;
}
}
/**
* Returns the number of referrer domains that link to the current site.
*
* @return int
*/
public function getReferrerDomainCount()
{
try {
$majesticInfo = $this->getMajesticInfo();
return $majesticInfo['referrer_domains_count'];
} catch (Exception $e) {
Log::info($e);
return 0;
}
}
/**
* Returns the domain age archive.org lists for the current url
*
* @return int
*/
protected function _getAgeArchiveOrg()
{
$url = str_replace('www.', '', $this->url);
$data = @$this->getPage('http://wayback.archive.org/web/*/' . urlencode($url));
preg_match('#<a href=\"([^>]*)' . preg_quote($url) . '/\">([^<]*)<\/a>#', $data, $p);
if (!empty($p[2])) {
$value = strtotime($p[2]);
if ($value === false) {
return 0;
}
return $value;
}
return 0;
}
/**
* Returns the domain age who.is lists for the current url
*
* @return int
*/
protected function _getAgeWhoIs()
{
$url = preg_replace('/^www\./', '', $this->url);
$url = 'http://www.who.is/whois/' . urlencode($url);
$data = $this->getPage($url);
preg_match('#(?:Creation Date|Created On|created|Registered on)\.*:\s*([ \ta-z0-9\/\-:\.]+)#si', $data, $p);
if (!empty($p[1])) {
$value = strtotime(trim($p[1]));
if ($value === false) {
return 0;
}
return $value;
}
return 0;
}
/**
* Returns the domain age whois.com lists for the current url
*
* @return int
*/
protected function _getAgeWhoisCom()
{
$url = preg_replace('/^www\./', '', $this->url);
$url = 'http://www.whois.com/whois/' . urlencode($url);
$data = $this->getPage($url);
preg_match('#(?:Creation Date|Created On|created):\s*([ \ta-z0-9\/\-:\.]+)#si', $data, $p);
if (!empty($p[1])) {
$value = strtotime(trim($p[1]));
if ($value === false) {
return 0;
}
return $value;
}
return 0;
}
/**
* Convert numeric string to int
*
* @see getPageRank()
*
* @param string $Str
* @param int $Check
* @param int $Magic
* @return int
*/
private function StrToNum($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 hash for a url
*
* @see getPageRank()
*
* @param string $String
* @return int
*/
private function HashURL($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 string
*
* @see getPageRank()
*
* @param int $Hashnum
* @return string
*/
private function CheckHash($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 . $HashStr;
}
private function getMajesticInfo()
{
if ($this->majesticInfo === null) {
$client = new MajesticClient();
$this->majesticInfo = $client->getBacklinkStats($this->url);
}
return $this->majesticInfo;
}
}