Re: Encryption & Decryption script

could try:

while(!feof($fp_r)) {

$r = fread($fp_r,65536);

if (is_binary($r)) {
$binArray = split('[0-1]{8}',$r); //or use \d{8}
$r = '';
foreach ($binArray as $value) {
$r .= bindec($value);
}
//Could use array_walk as well

for($i = 0; $i < strlen($r); $i++) {
$foo[$i] = $r[$i] ^ $key[$k];

if($k==sizeof($key))
$k =0;
$k++;
} .....
.