gistfile1.php

$arrival = new DateTime(date('Y-m-d', strtotime($arrival)));
        $departure = new DateTime(date('Y-m-d', strtotime($departure)));

        $apartment = Cart::contents();
        $apartment = reset($apartment);

        $days = $arrival == $departure ? $days = 1 : $departure->diff($arrival)->format("%a");

        $total = 0;
        for ($i = 0; $i < $days; $i++)
        {
            $dynamicPriceFlag = false;
            foreach ($apartment->dynamic_prices as $dynamic_price)
            {
                if ($arrival >= new DateTime($dynamic_price['date_from'] . ' 00:00:00')
                    && $arrival <= new DateTime($dynamic_price['date_to'] . ' 23:59:59')
                )
                {
                    echo $arrival->format('d-m-Y') . ': ' . $dynamic_price['price'] . '<br/>';

                    $total += $dynamic_price['price'];

                    $dynamicPriceFlag = true;

                    break;
                }
            }

            if (!$dynamicPriceFlag) {
                echo $arrival->format('d-m-Y') . ': ' . $apartment->price . '<br/>';
                $total += $apartment->price;
            }

            $arrival->modify('+1 day');
        }