gistfile1.php

<?php 

class Order
{
    private $orderId;
    private $state;
    private $total;
    private $creationDate;
    private $items = array();
    private $buyer;
    
    ...
    
    public function renderOrderFound()
    {
        $orderFoundViewModel = new OrderFoundViewModel()
        
        $orderFoundViewModel->orderId = $this->getOrderId();
        $orderFoundViewModel->state = $this->getState(),
        $orderFoundViewModel->orderCreationDate = $this->getCreationDate(),
        $orderFoundViewModel->total = $this->getTotal();
        };
            
        foreach ($this->getItems() as $item) {
            $orderFoundViewModel->items[] = $item;
        }
        
        return $orderFoundViewModel;
    }
}