PrivateBin\I18n::getBrowserLanguages PHP Method

    public static function getBrowserLanguages()
    {
        $languages = array();
        if (array_key_exists('HTTP_ACCEPT_LANGUAGE', $_SERVER)) {
            $languageRanges = explode(',', trim($_SERVER['HTTP_ACCEPT_LANGUAGE']));
            foreach ($languageRanges as $languageRange) {
                if (preg_match('/(\\*|[a-zA-Z0-9]{1,8}(?:-[a-zA-Z0-9]{1,8})*)(?:\\s*;\\s*q\\s*=\\s*(0(?:\\.\\d{0,3})|1(?:\\.0{0,3})))?/', trim($languageRange), $match)) {
                    if (!isset($match[2])) {
                        $match[2] = '1.0';
                    } else {
                        $match[2] = (string) floatval($match[2]);
                    }
                    if (!isset($languages[$match[2]])) {
                        $languages[$match[2]] = array();
                    }
                    $languages[$match[2]][] = strtolower($match[1]);
                }
            }
            krsort($languages);
        }
        return $languages;
    }