Get the Google Plus One count for a given URL

GooglePlusOneCount.php

<?php
function getCount($url)
{
    //Assumes Guzzle. As long as you make a request to the URL below and grab the body, it doesn't matter how you cURL.
    $request = $this->getHttpClient()->get('https://plusone.google.com/_/+1/fastbutton?url='.urlencode($url));
    $html = $request->send()->getBody();

    // Disable libxml errors
    libxml_use_internal_errors(true);
    $document = new \DOMDocument();
    $document->loadHTML($html);
    $aggregateCount = $document->getElementById('aggregateCount');
    // Restore libxml errors
    libxml_use_internal_errors();

    // Instead of big numbers, Google returns strings like >10K or 1.3K, I want a floating point number
    if (preg_match('/>*([0-9]+[.]*[0-9]+)([kKmM])/', $aggregateCount->nodeValue, $matches)) {
        $count = $matches[1] * 1000;
        if (in_array($matches[2], ['m', 'M']) {
            $count = $matches[1] * 1000000;
        }
    } else {
        $count = intval($aggregateCount->nodeValue);
    }
    $this->getCache()->save($site->getId().'_'.$url.'_gpluscount', $count, 1800);

    return $count;
}
?>