Class for bitwise type value storage.

output.txt

$ php usage.php 
Is 3 type A? 1
Is 3 type B? 1
Is 3 type C? 0

Type.php

<?php

namespace myapp;

class Type {
	const A = 1;
	const B = 2;
	const C = 4;
	
	public static function is_a ($type) {
		return (bool) ($type & self::A);
	}

	public static function is_b ($type) {
		return (bool) ($type & self::B);
	}

	public static function is_c ($type) {
		return (bool) ($type & self::C);
	}
}

?>

usage.php

<?php

// Usage:

use myapp\Type;

$type = Type::A + Type::B; // $type = 3

printf ("Is %d type A? %d\n", $type, Type::is_a ($type));
printf ("Is %d type B? %d\n", $type, Type::is_b ($type));
printf ("Is %d type C? %d\n", $type, Type::is_c ($type));

?>