--TEST--
SPL: ArrayObject with overridden count()
--FILE--
<?php
$obj = new ArrayObject(array(1,2));
var_dump(count($obj));
class ArrayObject2 extends ArrayObject {
    public function count(): int {
        return -parent::count();
    }
}
$obj = new ArrayObject2(array(1,2));
var_dump(count($obj));
?>
--EXPECT--
int(2)
int(-2)