#byte serve

This week and last week i am working on implementing HTTP 206 and i am using this code : <?php function byteServe($start,$end,$order)        { $ord = str_split($order);        $data = " ";        if($end > count($ord)||$end == null||$end == count($ord)){         $end = count($ord)-1;        }        for ($x = $start; $x <= $end; $x++) {                 $data .= $ord[$x];        }        header('Content-Length: '.strlen($data));        header('Content-Range: '.$start .'-'.$end);        if(substr($data,-1)== '#'){        http_response_code(200);        }        echo $data; } ?> Its not finished yet and when it is i will post about it again, first some information about what i am doing here. I'm requesting a part of an order that is stored on the server, we send that part with a HTTP response code of 206 which means. Partial Content, this way the requester knows that he can ask for parts of something in bytes, we send content-range so it knows what part it got. This is so it knows from what byte it needs to request and so on until the end.