Ecek-ecek

<form method=post>
<input name=str>
</form><b>
<?
$str=$_POST[str];
if(isset($str)){
echo '0x';
echo bin2hex($str);
}
?>

Contoh :
C:\boot.ini => 0x433a5c626f6f742e696e69
/etc/passwd => 0x2f6574632f706173737764
Lalu apa gunanya. Silakan berusaha main2 ama paman google