Input

Is Natural

Rule `is_natural`: Natural number including zero.

Usage

Use for non-negative integers.

$schema = \Lemonade\Framework\Validation\ValidationSchema::create()
    ->field('field', 'Field')
        ->isNatural()
        ->end();

$result = $validator->validate($payload, $schema);

Stable rule name

is_natural for translations, registry lookup and per-rule messages.

Group

Numeric