/**
 * Return encoded password by specified encode type
 * La2::PassEncode()
 *
 * @param mixed $pass
 * @param string $type
 * @return
 */
public function PassEncode($pass, $type='sha1')
{
    if ($type == 'whirlpool')
        return base64_encode(hash('whirlpool', $pass, true));
    else
        return base64_encode(pack('H*', sha1(utf8_encode($pass))));
}

/**
 * Usage:
 * $encode_type is 'whirlpool' or 'sha1'
 */
$new_pass = '123'; $encode_type = 'sha1'; $encode_type = 'whirlpool';
echo PassEncode($new_pass, $encode_type);

/**
 * For check
 * password: 123
 * SHA1: QL0AFWMIX8NRZTKeof9cXsvbvu8=
 * whirpool: NEkH6JuYHK8iHQX1l+tXpq9AjxX03XiVu9G5aik47CSn3PI6y5Ts4LbXsGQDWLxWvbRIGUuTBTEa/wOKg0oHnw==
 */