OpenPGP_Packet::header_and_body PHP Method

    function header_and_body()
    {
        $body = $this->body();
        // Get body first, we will need it's length
        $tag = chr($this->tag | 0xc0);
        // First two bits are 1 for new packet format
        $size = chr(255) . pack('N', strlen($body));
        // Use 5-octet lengths
        return array('header' => $tag . $size, 'body' => $body);
    }