2016-07-21 15:09:38 +02:00
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# Number
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- `Number()`
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Validates if the input is a number.
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```php
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v::number()->validate(42); // true
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v::number()->validate(acos(8)); // false
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```
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> "In computing, NaN, standing for not a number, is a numeric data type value
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> representing an undefined or unrepresentable value, especially in
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> floating-point calculations." [Wikipedia](https://en.wikipedia.org/wiki/NaN)
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2019-05-11 18:32:13 +02:00
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## Categorization
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- Numbers
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2016-07-21 15:09:38 +02:00
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## Changelog
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Version | Description
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--------|-------------
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2.0.0 | Created
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***
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See also:
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2018-12-11 13:31:50 +01:00
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- [BoolType](BoolType.md)
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- [CallableType](CallableType.md)
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- [FloatType](FloatType.md)
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- [IntType](IntType.md)
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- [NotBlank](NotBlank.md)
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- [NotEmpty](NotEmpty.md)
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- [NotOptional](NotOptional.md)
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- [NullType](NullType.md)
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- [NumericVal](NumericVal.md)
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- [ObjectType](ObjectType.md)
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- [ResourceType](ResourceType.md)
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- [StringType](StringType.md)
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- [Type](Type.md)
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