callback

Checks with the callback sent by the user It's ideal for one-time custom validations

V::callback($value, callable $callback): bool

Parameters

Name	Type	Default
$valuerequired	`mixed`	no default value
$callbackrequired	`callable`	no default value

bool

V::callback(
    ['green', 'blue'],
    fn ($value) => count($value) === count(array_intersect($value, ['red', 'green', 'blue']))
);