# Alpha - `Alpha()` - `Alpha(string $additionalChars)` This is similar to `Alnum()`, but it doesn't allow numbers. ## Changelog Version | Description --------|------------- 0.3.9 | Created *** See also: - [Alnum](Alnum.md) - [Digit](Digit.md) - [Consonant](Consonant.md) - [Vowel](Vowel.md)