Online PHP editor | refs for HIUHb

<?php class Age { public function __construct(readonly public int $age) { if (0 > $age) { throw new DomainException('Age must be positive integer. "' . $age . '" provided.'); } } } class PickMinAge { public function __invoke(Age $firstAge, Age $secondAge): Age { return min($firstAge, $secondAge); } } $firstAge = new Age(33); $secondAge = new Age(22); $minAge = (new PickMinAge())($firstAge, $secondAge); var_dump($minAge);