DirectAdmin\LetsEncrypt\Lib\HTTPSocket::fetch_header PHP Method

    function fetch_header($header = '')
    {
        $array_headers = preg_split("/\r\n/", $this->result_header);
        $array_return = array(0 => $array_headers[0]);
        unset($array_headers[0]);
        foreach ($array_headers as $pair) {
            list($key, $value) = preg_split("/: /", $pair, 2);
            $array_return[strtolower($key)] = $value;
        }
        if ($header != '') {
            return $array_return[strtolower($header)];
        }
        return $array_return;
    }