Description:
------------
A for-loop that uses condition $i < $x + 1 prints very weird numbers.

This requires you to ENABLE the opcache and DISABLE xdebug.

Test script:
---------------
function test(int $nr) {
	for ($i = $nr; $i <= $nr + 1; $i++)
		var_dump($i);
}

test(1);

Expected result:
----------------
int(1)
int(2)

Actual result:
--------------
int(-9223372036854775808)
int(-9223372036854775808)