Laravel Validation: Validating Arrays

$validator = Validator::make($request->all(), [
    'photos.profile' => 'required|image',
]);

$validator = Validator::make($request->all(), [
    'person.*.email' => 'email|unique:users',
    'person.*.first_name' => 'required_with:person.*.last_name',
]);

'custom' => [
    'person.*.email' => [
        'unique' => 'Each person must have a unique e-mail address',
    ]
],