# NullType

- `NullType()`

Validates whether the input is [null](http://php.net/types.null).

```php
v::nullType()->validate(null); // true
```

## Categorization

- Types

## Changelog

Version | Description
--------|-------------
  1.0.0 | Renamed from `NullValue` to `NullType`
  0.3.9 | Created as `NullValue`

***
See also:

- [ArrayType](ArrayType.md)
- [BoolType](BoolType.md)
- [BoolVal](BoolVal.md)
- [CallableType](CallableType.md)
- [FloatType](FloatType.md)
- [IntType](IntType.md)
- [NotBlank](NotBlank.md)
- [NotEmpty](NotEmpty.md)
- [NotOptional](NotOptional.md)
- [Nullable](Nullable.md)
- [Number](Number.md)
- [ObjectType](ObjectType.md)
- [Optional](Optional.md)
- [ResourceType](ResourceType.md)
- [StringType](StringType.md)
- [StringVal](StringVal.md)
- [Type](Type.md)