Prado\Web\THttpResponse::getHeaders PHP Method

    public function getHeaders($case = null)
    {
        $result = array();
        $headers = headers_list();
        foreach ($headers as $header) {
            $tmp = explode(':', $header);
            $key = trim(array_shift($tmp));
            $value = trim(implode(':', $tmp));
            if (isset($result[$key])) {
                $result[$key] .= ', ' . $value;
            } else {
                $result[$key] = $value;
            }
        }
        if ($case !== null) {
            return array_change_key_case($result, $case);
        }
        return $result;
    }