{
public $tax = 0;
}
class DVD extends Item
{
public $tax = 0.05;
}
class VideoGame extends Item
{
public $tax = 0.1;
}
$cart = new ShoppingCart();
$cart->addItem(new Book('Cheap Book', 2.99));
$cart->addItem(new Book('Expensive Book', 24.99));
$cart->addItem(new DVD('Movie', 12.99));
$cart->addItem(new VideoGame('Video Game', 59.99));
// var_dump($cart);
$beforeTax = number_format($cart->getCostBeforeTax(), 2);
$taxAmount = number_format($cart->getTaxAmount(), 2);
$afterTax = number_format($cart->getCostAfterTax(), 2);
$cart->removeItem("Expensive Book");
// var_dump($cart);
echo "<p>Total cost before tax: \${$beforeTax}</p>";
echo "<p>Tax amount: \${$taxAmount}</p>";
echo "<p>Total cost after tax: \${$afterTax}</p>";
?>
</p>
</body>
</html>
