# Consonant - `Consonant()` - `Consonant(string ...$additionalChars)` Similar to `Alnum()`. Validates strings that contain only consonants: ```php v::consonant()->validate('xkcd'); // true ``` ## Changelog Version | Description --------|------------- 0.5.0 | Renamed from `Consonants` to `Consonant` 0.3.9 | Created as `Consonants` *** See also: - [Alnum](Alnum.md) - [Alpha](Alpha.md) - [Digit](Digit.md) - [Vowel](Vowel.md)