1# Vowel
2
3- `v::vowel()`
4
5Similar to `v::alnum()`. Validates strings that contains only vowels:
6
7```php
8v::vowel()->validate('aei'); // true
9```
10
11***
12See also:
13
14  * [Alnum](Alnum.md)
15  * [Digit](Digit.md)
16  * [Alpha](Alpha.md)
17  * [Consonant](Consonant.md)
18