$ivs = mcrypt_get_iv_size(MCRYPT_DES, MCRYPT_MODE_CBC);
$iv = mcrypt_create_iv($ivs, MCRYPT_RAND);
$key = "F925T";
$message = "This is a test.";
$enc = mcrypt_encrypt(MCRYPT_DES, $key, $message, MCRYPT_MODE_CBC, $iv);
echo bin2hex($enc);
?>