# Regex - `v::regex(string $regex)` Evaluates a regex on the input and validates if matches ```php v::regex('/[a-z]/')->validate('a'); // true ``` Message template for this validator includes `{{regex}}` *** See also: * [Alnum](Alnum.md) * [Alpha](Alpha.md) * [Contains](Contains.md) * [Digit](Digit.md) * [EndsWith](EndsWith.md) * [PhpLabel](PhpLabel.md) * [Roman](Roman.md) * [StartsWith](StartsWith.md) * [Version](Version.md)