Smart binary operations in PHP

BinaryWise.php

<?php
//
// Bitwise operations can save memory! And looks smart! :)
// It is possible use short binary chain as settings registry
// Note: PHP 5.4+ knows how to use 0b binary format, older
// version can use bindec() function or just use your brain!
//
// @author Vladimir Belohradsky
//

// constants with binary numbers
define('STATUS_VENT', 1); // 0b001
define('STATUS_DOOR', 2); // 0b010
define('STATUS_BELL', 4); // 0b100

// turn everything on (binary OR operation)
$status = STATUS_VENT | STATUS_DOOR | STATUS_BELL;

// turn doors off (binary NOT operation)
$status ^= STATUS_DOOR;

// check status chain where first number is position 
// and second is 1 which is 0b1 in binary (binary AND operation)
if (($status >> 0) & 1) {
	echo 'VENT is on', "\n";
}
if (($status >> 1) & 1) {
	echo 'DOOR is on', "\n";
}
if (($status >> 2) & 1) {
	echo 'BELL is on', "\n";
}