Piwik\UpdateCheck::getLatestAvailableVersionNumber PHP Method

getLatestAvailableVersionNumber() private static method

Should return a semantic version number in format MAJOR.MINOR.PATCH (http://semver.org/). Returns an empty string in case one cannot connect to the remote server.
private static getLatestAvailableVersionNumber ( ) : string
return string
    private static function getLatestAvailableVersionNumber()
    {
        $releaseChannels = StaticContainer::get('\\Piwik\\Plugin\\ReleaseChannels');
        $channel = $releaseChannels->getActiveReleaseChannel();
        $url = $channel->getUrlToCheckForLatestAvailableVersion();
        try {
            $latestVersion = Http::sendHttpRequest($url, self::SOCKET_TIMEOUT);
        } catch (\Exception $e) {
            // e.g., disable_functions = fsockopen; allow_url_open = Off
            $latestVersion = '';
        }
        return $latestVersion;
    }