Your Shopping Cart

Heat on DVD: $19.99 Remove
Cart Total:: $19.99
Product List

Heat on DVD: $19.99 Add Item
WalkMan: $29.99 Add Item
Super Mario: $39.99 Add Item
CODE FOLLOWS

<?php

session_start();

// Enable error reporting for debugging

error_reporting(E_ALL);

ini_set('display_errors', 1);



// Include header.php here to ensure no output happens before this



class Product {

    private $productId;

    private $productName;

    private $price;



    public function __construct($productId, $productName, $price) {

        $this->productId = $productId;

        $this->productName = $productName;

        $this->price = $price;

    }



    public function getId() {

        return $this->productId;

    }



    public function getName() {

        return $this->productName;

    }



    public function getPrice() {

        return $this->price;

    }

}



$products = array(

    1 => new Product(1, "Heat on DVD", 19.99),

    2 => new Product(2, "WalkMan", 29.99),

    3 => new Product(3, "Super Mario", 39.99)

);



if (!isset($_SESSION["cart"])) {

    $_SESSION["cart"] = array();

}



if (isset($_GET["action"])) {

    if ($_GET["action"] == "addItem") {

        addItem();

    } elseif ($_GET["action"] == "removeItem") {

        removeItem();

    }

} else {

    displayCart();

}



function addItem() {

    global $products;



    // Validate and sanitize the productId

    $productId = filter_var($_GET["productId"], FILTER_VALIDATE_INT);



    if ($productId >= 1 && $productId <= 3) {

        if (!isset($_SESSION["cart"][$productId])) {

            $_SESSION["cart"][$productId] = $products[$productId];

        }

    }



    session_write_close();

    // Redirect after adding to the cart

    header("Location: my-session.php");

    exit;

}



function removeItem() {

    global $products;



    // Validate and sanitize the productId

    $productId = filter_var($_GET["productId"], FILTER_VALIDATE_INT);



    if ($productId >= 1 && $productId <= 3) {

        if (isset($_SESSION["cart"][$productId])) {

            unset($_SESSION["cart"][$productId]);

        }

    }



    session_write_close();

    // Redirect after removing from the cart

    header("Location: my-session.php");

    exit;

}



function displayCart() {

    global $products;

    ?>

    <!doctype html>

    <html lang="en-us">



    <head>

        <meta charset="utf-8">

        <title>Your PHP Example</title>

        <link rel="stylesheet" href="../css/styles.css" media="screen">

    </head>



    <body>



    <div id="page"> <!-- start of page -->



        <div class="navcontainer-top">

            <ul class="navlist">

                <li><a href="../index.php">Back</a></li>

            </ul>

        </div>



        <div id="content"> <!-- start of content -->



            <h1>Your Shopping Cart</h1>

            <dl>

                <?php

                $totalPrice = 0;

                if (!empty($_SESSION["cart"])) {

                    foreach ($_SESSION["cart"] as $product) {

                        $totalPrice += $product->getPrice();

                        ?>

                        <dt><?php echo $product->getName(); ?></dt>

                        <dd>

                            $<?php echo number_format($product->getPrice(), 2); ?>

                            <a href="my-session.php?action=removeItem&productId=<?php echo $product->getId(); ?>">Remove</a>

                        </dd>

                    <?php }

                } else {

                    echo "<p>Your cart is empty.</p>";

                }

                ?>

                <dt>Cart Total:</dt>

                <dd><strong>$<?php echo number_format($totalPrice, 2); ?></strong></dd>

            </dl>



            <h1>Product List</h1>

            <dl>

                <?php foreach ($products as $product) { ?>

                    <dt><?php echo $product->getName(); ?></dt>

                    <dd>

                        $<?php echo number_format($product->getPrice(), 2); ?>

                        <a href="my-session.php?action=addItem&productId=<?php echo $product->getId(); ?>">Add Item</a>

                    </dd>

                <?php } ?>

            </dl>



            <div id="footer"> <!-- footer inside content -->



                <?php

                // show code



                $self = basename($_SERVER['SCRIPT_NAME']);



                echo('<hr>CODE FOLLOWS<br><br>');

                highlight_file($self);

                echo('<hr>');

                ?>



            </div> <!-- end of footer -->



        </div> <!-- end of content -->



        <div class="clear">

            &nbsp;

        </div>

        <div class="navcontainer">

            <ul class="navlist">

                <li><a href="../index.php">Back</a></li>

            </ul>

        </div>



    </div> <!-- end of page -->







    <!-- end of page -->

    </body>

    </html>



    <?php

}

?>