BITXOR in ColdFusion from PHP

Hello,

im trying to rewrite bitXOR code from PHP to Coldfusion:

token is byteArray

string is String

PHP:

for($i = 0;$i < $length; $i++){

$xor .= ($token[$i] ^ $string[$i]);

}

Here is what i have so far in CF:

<cfscript >

var theXOR=""; 

var i=1;

var token = CharsetEncode(token,"utf-8");

for (; i le length; i++ ) {

        xor = xor & rJustify(formatbaseN(bitXor(asc(mid(token,i,1)),asc(mid(string,i,1))),"16"),2);      

    }

</cfscript>

The problem is that the CF result is not the same as PHP.

PHP code does what I need.

What I'm doing wrong?

Thanks for help.