Use PHP to implement mall discount promotions

In the process of mall operation, discount promotions have always been one of the important means to attract consumers. Using PHP to implement such activities is not only convenient and fast, but also allows for better control and management of the rules and effects of the activities. Here's how to use the PHP Developer City discount promotion.

1. Database design

Before starting PHP development, you need to design the database first. The following factors mainly need to be considered:

• Product table design: Basic information of the product needs to be stored, including product number, name, price, etc.
• Promotional activity table design: Basic information of promotional activities needs to be stored, including activity number, name, start and end time, etc.
• Participation activity table design: It is necessary to store product information participating in the activity, including product number, activity number, discount price, etc.
• Order table design: Basic information of the order needs to be stored, including order number, order time, order status, etc.

2. Development environment setup

Before starting PHP development, you need to set up development environments such as PHP and MySQL. You can choose to use a development environment integration package such as XAMPP or WAMP, or you can install it manually and configure the corresponding extensions and services.

3. Code Implementation

After the development environment is set up, you can start writing PHP code. The following is a simple mall discount promotion implementation code:

(1) Query available promotions

SELECT * FROM promotion WHERE start_time <= NOW() AND end_time >= NOW();

Query ongoing promotions based on the current time.

(2) Query the products participating in the event

SELECT * FROM product WHERE promotion_id=?;

Query the list of products participating in the event based on the event number.

(3) Calculate the discount price

$discountPrice = $productPrice * $discountRate;

Calculate the discount price based on the original price of the product and the discount rate.

(4) Add event products to the shopping cart

$cartItem = array(
    'id' => $productId,
    'name' => $productName,
    'price' => $discountPrice,
    'quantity' => $quantity,
);
array_push($_SESSION['cart'], $cartItem);

Add event products to the shopping cart.

(5) Settlement order

foreach($_SESSION['cart'] as $item) {
    $totalPrice += $item['price'] * $item['quantity'];
}

Traverse the product information in the shopping cart and calculate the total order price.

4. Safety Issues

When developing discount promotions in the city, you need to pay attention to security issues. Special attention should be paid to the following points:

• Input verification: User input should be strictly verified to avoid SQL injection and other attacks.
• Permission control: Different permissions need to be assigned to different users to prevent unauthorized users from modifying system data.
• Data encryption: Important user data needs to be encrypted and stored to avoid leakage.

Summary

In the process of mall operation, discount promotion activities are very practical, not only can attract consumers, but also increase sales revenue. Using PHP to implement mall discount promotions can better control and manage activities, and can be developed very quickly. During the development process, you need to pay attention to security issues and carry out strict input verification, permission control and data encryption.

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