/plugins/SEO/RankChecker.php
PHP | 376 lines | 226 code | 37 blank | 113 comment | 23 complexity | 3dcd01912572e01ce95642b14d290b60 MD5 | raw file
Possible License(s): LGPL-3.0, JSON, MIT, GPL-3.0, LGPL-2.1, GPL-2.0, AGPL-1.0, BSD-2-Clause, BSD-3-Clause
- <?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 $url
- * @return string
- */
- static public function extractDomainFromUrl($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|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):\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;
- }
- }