public function providerForInvalidInput()
{
$rule = new Each($this->getRuleMock(false));
$ruleOnlyKeyValidation = new Each(null, $this->getRuleMock(false));
return [[$rule, 123], [$rule, ''], [$rule, null], [$rule, false], [$rule, ['', 2, 3, 4, 5]], [$ruleOnlyKeyValidation, ['age' => 22]]];
}