interface Test0 {}

class Test1 implements Test0 {}

class Test2 extends Test1 {
}

class Program {

	void main() {
		int[] $q = {1, 2, 3};
		float $t = 4;
		object $x = new Test1();
		var_dump($x is Test0);
		var_dump($x is Test1);
		var_dump($x is Test2);
		var_dump($x is object);
		var_dump($x is object[]);
		var_dump($x is void);
		var_dump($q is void);
		var_dump($q is void[]);
		var_dump($q is int);
		var_dump($q is int[]);
		var_dump($q[1] is int);
		var_dump($t is int);
		var_dump($t is float);
		var_dump($t is 4);
	}

}