dechex problem and i do not know about XOR

[roger5089]

<?

class connect{

var $Packet_length = 255;	
var $Check_length  = 39;	

var $First;
var $Second;
var $result;



var $Type 	="0";
var $UserID  ="n               ";
var $Password = "wife            ";
var $Service_type ="111";

var $Content_Control;
var $Content_result;

var $Check_Sum;


function getConnect(){


$this->First = dechex($this->Check_length);

$this->result = $this->Packet_length - $this->Check_length;

$this->Second = dechex($this->result);


echo $this->First . ' ' . $this->Second . ' ' ; 

print "\n\n";

$this->Content_Control = $this->Type . $this->UserID . $this->Password . $this->Service_type;


for($i =0; $i <strlen($this->Content_Control); $i++){


 $this->Content_result .= dechex(ord(substr($this- 

Content_Control,$i))) . ' ';

 }// end for 


 echo  $this->Content_result . ' ';	 

 print "\n\n";


}//end getConnect


}//end class

$obj = new connect();
$obj->getConnect();
$obj->Test();

?>

1.The first output is = 27 d8

2.The second output is = 30 6e 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 77 69 66 65 20 20 20 20 20 20
20 20 20 20 20 20 31 31 31

3. how can i use XOR to get output from

$d = $this->First ^ $this->Second ^ $this->Content_result;

how can i get output from $d become [bd] ?????????

[Weedpacket]

Pardon?