# LanguageCode

- `LanguageCode()`
- `LanguageCode(string $set)`

Validates whether the input is language code based on ISO 639.

```php
v::languageCode()->isValid('pt'); // true
v::languageCode()->isValid('en'); // true
v::languageCode()->isValid('it'); // true
v::languageCode('alpha-3')->isValid('ita'); // true
v::languageCode('alpha-3')->isValid('eng'); // true
```

You can choose between `alpha-2` and `alpha-3`; `alpha-2` is set by default set.

## Categorization

- ISO codes
- Localization

## Changelog

Version | Description
--------|-------------
  1.1.0 | Created

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See also:

- [CountryCode](CountryCode.md)