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Analysis of data synchronization method between shopping cart and favorites developed using PHP

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Release： 2023-07-02 12:58:02

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Analysis of data synchronization method of shopping cart and favorites developed using PHP

In a shopping mall website, shopping cart and favorites are one of the most commonly used functions by users. The shopping cart is used to save the products selected by the user for checkout, while the favorites are used by the user to save the products of interest for later viewing and purchase. However, sometimes users add items to their shopping cart and then want to add them to their favorites, or add items from their favorites to their shopping cart. Therefore, the mall website needs to provide a way to synchronize data between the shopping cart and favorites.

In PHP development, we can use Session to save the user's shopping cart and favorites data. Session is a method for tracking user state, saving and reading data as the user interacts on the website.

First of all, we need to perform corresponding processing when the user adds items to the shopping cart or favorites. Assume that we already have a page named "add_to_cart.php" for processing adding items to the shopping cart:

<?php
session_start();

// 获取要添加到购物车的商品信息
$product_id = $_GET['product_id'];
$product_name = $_GET['product_name'];
$product_price = $_GET['product_price'];

// 将商品信息保存到购物车数组中
if(isset($_SESSION['cart'])) {
   $_SESSION['cart'][] = array(
      'id' => $product_id,
      'name' => $product_name,
      'price' => $product_price
   );
} else {
   $_SESSION['cart'] = array(
      array(
         'id' => $product_id,
         'name' => $product_name,
         'price' => $product_price
      )
   );
}

// 将用户重定向到购物车页面
header('Location: cart.php');
exit;
?>

Copy after login

In the above code, we first use the session_start() function to open it Session. Then, we use $_GET[] to obtain the product information passed by the user from the page, such as product ID, name and price. Next, we save the product information into a Session variable named "cart". If the variable does not exist, create a new Session variable. Finally, we redirect the user to the shopping cart page through the header() function.

Similarly, we also need to create a page named "add_to_wishlist.php" to add items to favorites:

<?php
session_start();

// 获取要添加到收藏夹的商品信息
$product_id = $_GET['product_id'];
$product_name = $_GET['product_name'];
$product_price = $_GET['product_price'];

// 将商品信息保存到收藏夹数组中
if(isset($_SESSION['wishlist'])) {
   $_SESSION['wishlist'][] = array(
      'id' => $product_id,
      'name' => $product_name,
      'price' => $product_price
   );
} else {
   $_SESSION['wishlist'] = array(
      array(
         'id' => $product_id,
         'name' => $product_name,
         'price' => $product_price
      )
   );
}

// 将用户重定向到收藏夹页面
header('Location: wishlist.php');
exit;
?>

Copy after login

The above code is similar to the code added to the shopping cart, We only need to save the product information into a Session variable named "wishlist" and redirect the user to the favorites page.

In the shopping cart page and favorites page, we need to display the product information added by the user. The following is a code example for a simple shopping cart page:

<?php
session_start();
?>

<html>
<head>
   <title>购物车</title>
</head>
<body>
   <h1>购物车</h1>
   <?php
   if(isset($_SESSION['cart'])) {
      foreach($_SESSION['cart'] as $item) {
         echo '<p>'.$item['name'].' - ￥'.$item['price'].'</p>';
      }
   } else {
      echo '<p>购物车是空的。</p>';
   }
   ?>
</body>
</html>

Copy after login

In the above code, we first use the session_start() function to open the Session. Then, we use foreach to loop through the product information stored in the "cart" Session variable and display it on the page. If the shopping cart is empty, a prompt message is output.

Similarly, we can also create a favorites page for display. The code of the shopping cart page can be reused, and the Session variables and page title only need to be modified accordingly.

Summary:
By using Session to save the data of the shopping cart and favorites, we can achieve data synchronization between the shopping cart and favorites. When the user adds a product to the shopping cart or favorites, we save the product information to the corresponding Session variable. In the shopping cart and favorites pages, we can read product information from the Session and display it to the user. In this way, users can easily add and manage items in their shopping carts and favorites, which improves the shopping experience.

The above is an analysis of the data synchronization method of the mall shopping cart and favorites developed using PHP, and the corresponding code examples are attached. By understanding and applying these methods, developers can better implement shopping cart and favorites functions, and improve the user experience of the mall website.

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