Online PHP editor | refs for Biq6o

<?php class Command { private $photoIds; private $categoryIds; private function setPhotoIds(int ...$photoIds):self { $this->photoIds = $photoIds; return $this; } private function setCategoryIds(int ...$categoryIds):self { $this->categoryIds = $categoryIds; return $this; } public function __construct(array $photoIds, array $categoryIds) { $this ->setPhotoIds(...$photoIds) ->setCategoryIds(...$categoryIds); } public function getPhotoIds():array { return $this->photoIds; } public function getCategoryIds():array { return $this->categoryIds; } } class Handler { public function __invoke(Command $command) { return array_sum($command->getPhotoIds() + $command->getCategoryIds()); } } $handler = new Handler(); $command = new Command([1, 2], [3, 4]); echo $handler($command);