Head Rush Ajax

284

Chapter 5

...at a glance

PHP

Frank hardly took any time in updating the placeOrder.php script. It still places

an order, but now it doesn’t need to return any HTML. Instead, it just gives an

estimate for when the pizza will arrive at the customer’s front door.

<?php

include(“order.php”);

include(“delivery.php”);

// Error checking

$order = $_REQUEST[‘order’];

$address = $_REQUEST[‘address’];

if (strlen($order) <= 0) {

header(“Status: No order was received.”, true, 400);

echo “ “;

exit;

}

if (strlen($address) <= 0) {

header(“Status: No address was received.”, true, 400);

echo “ “;

exit;

}

// Place the order

$pizzaOrder = new PizzaOrder($order, $address);

$pizzaOrder->cookOrder();

$pizzaOrder->prepOrder();

// Deliver the order

$delivery = new Delivery($pizzaOrder);

$delivery->deliver();

$deliveryTime = $delivery->getDeliveryEstimate();

echo $deliveryTime;

?>

Frank’s using a couple of other PHP les to

handle order and delivery specics. We won’t look

at those, but all these les are included in the

book’s downloadable examples.

CallbackSend OrderHTML Form PHP Script

The order is created,

cooked, and then prepped

for delivery.

The entire order is sent

to the delivery boy, who

takes care of getting it

to the customer.

Finally, the script nds out how long it

will take for the pizza to arrive, and

passes that back to the browser.

These just get

the request data.

Make sure we got an order that isn’t

an empty ...