# NullType - `NullType()` Validates if the input is null. ```php v::nullType()->validate(null); // true ``` ## Changelog Version | Description --------|------------- 1.0.0 | Renamed from `NullValue` to `NullType` 0.3.9 | Created as `NullValue` *** See also: - [BoolType](BoolType.md) - [CallableType](CallableType.md) - [FloatType](FloatType.md) - [IntType](IntType.md) - [NotBlank](NotBlank.md) - [NotEmpty](NotEmpty.md) - [NotOptional](NotOptional.md) - [NullType](NullType.md) - [ObjectType](ObjectType.md) - [ResourceType](ResourceType.md) - [StringType](StringType.md) - [Type](Type.md)