<?php

function checkGroundState(float $movY, float $dy) : void{
	var_dump($movY != $dy, $movY < 0, ($movY != $dy and $movY < 0));
	var_dump("wow!");
}

checkGroundState(0, 0);

function eq(float $a, float $b, $c, $d) {
	if ($a == $b) {
		echo 1;
	}
	if ($a == $b) {
	} else {
		echo 2;
	}
	if ($a != $b) {
		echo 3;
	}
	if ($a != $b) {
	} else {
		echo 4;
	}
	if ($a === $b) {
		echo 5;
	}
	if ($a === $b) {
	} else {
		echo 6;
	}
	if ($a !== $b) {
		echo 7;
	}
	if ($a !== $b) {
	} else {
		echo 8;
	}
	echo "\n";
	var_dump(
		$a == $b && $c,
		$a != $b && $c,
		$a === $b && $c,
		$a !== $b && $c,);
	var_dump(
		$a == $b || $d,
		$a != $b || $d,
		$a === $b || $d,
		$a !== $b || $d);
}
eq(3.0, 3.0, true, false);
eq(3.0,	2.0, true, false);
eq(3.0, NAN, true, false);
eq(NAN, NAN, true, false);