NullOr

February 3, 2026 · View on GitHub

NullOr(Validator $validator)

Validates the input using a defined validator when the input is not null.

Usage

v::nullOr(v::email())->assert(null);
// Validation passes successfully

v::nullOr(v::email())->assert('example@example.com');
// Validation passes successfully

v::nullOr(v::email())->assert('not an email');
// → "not an email" must be an email address or must be null

Prefix

For convenience, you can use nullOr as a prefix to any validator:

v::nullOrEmail()->assert('not an email');
// → "not an email" must be an email address or must be null

v::nullOrBetween(1, 3)->assert(2);
// Validation passes successfully

v::nullOrBetween(1, 3)->assert(null);
// Validation passes successfully

Templates

`NullOr::TEMPLATE_STANDARD`

Mode	Template
`default`	or must be null
`inverted`	and must not be null

Template as suffix

The template serves as a suffix to the template of the inner validator.

v::nullOr(v::alpha())->assert('has1number');
// → "has1number" must consist only of letters (a-z) or must be null

v::not(v::nullOr(v::alpha()))->assert("alpha");
// → "alpha" must not consist only of letters (a-z) and must not be null

Template placeholders

Placeholder	Description
`subject`	The validated input or the custom validator name (if specified).

Categorization

Nesting

Changelog

Version	Description
3.0.0	Templates changed
3.0.0	Renamed to `NullOr`
2.0.0	Created as `Nullable`