interface StoreInterface
{
    public function __construct(string $name,int $price);
    public function getPrice():int;
    public  function showProducts():string ;

}

class Store implements StoreInterface
{

    private $price;
    private $name;


    public function getPrice(): int
    {
        return $this->price;
    }

    public function showProducts(): string
    {
        return $this->name." | " . $this->price;
    }

    public function __construct(string $name, int $price)
    {
        $this->name = $name;
        $this->price = $price;

    }
}

class StoreManager
{
    private $products;
    public function  __construct(array $products)
    {
        $this->products=$products;
    }

    public function getName(): array
    {
        $name = [];

        foreach ($this->products as $product)
        {
            $name[] = $product->showProducts();
        }

        return $name;
    }

}

$products = [
    $apple = new Store("apple",20),
    $banana = new Store("banana",40)
];
$storeManager = new StoreManager($products);


echo implode("|", $storeManager->getName());