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<?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\Metric;
use Piwik\Http;
use Piwik\NumberFormatter;
use Psr\Log\LoggerInterface;
/**
* Retrieves the Alexa rank.
*/
class Alexa implements MetricsProvider
{
const URL = 'http://data.alexa.com/data?cli=10&url=';
const LINK = 'http://www.alexa.com/siteinfo/';
/**
* @var LoggerInterface
*/
private $logger;
public function __construct(LoggerInterface $logger)
{
$this->logger = $logger;
}
public function getMetrics($domain)
{
try {
$response = Http::sendHttpRequest(self::URL . urlencode($domain), $timeout = 10, @$_SERVER['HTTP_USER_AGENT']);
$xml = @simplexml_load_string($response);
$value = $xml ? NumberFormatter::getInstance()->formatNumber((int)$xml->SD->POPULARITY['TEXT']) : null;
} catch (\Exception $e) {
$this->logger->warning('Error while getting Alexa SEO stats: {message}', array('message' => $e->getMessage()));
$value = null;
}
$logo = "plugins/SEO/images/alexa.com.png";
$link = self::LINK . urlencode($domain);
return array(
new Metric('alexa', 'SEO_AlexaRank', $value, $logo, $link)
);
}
}
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