Use PHP to develop a city to implement price range search function

How to use PHP Developer City to implement product price range search function

In today's e-commerce era, the product search function is an indispensable part of a mall website. The product price range search function is a commonly used filtering method for users during the shopping process. This article will introduce how to use PHP to develop a shopping mall website and implement the product price range search function.

1. Preparation

Before starting, we need to prepare the following tools and environment:

1. PHP development environment: You can choose to install WAMP, XAMPP etc. Integrated environment, you can also build your own PHP environment;
2. Database: We need a database to store product information and price data, you can choose MySQL or other databases;
3. Mall template: Choose a suitable one The mall template is used as the basis;
4. Editor: Choose a programming editor that suits you, such as Sublime Text, Visual Studio Code, etc.

2. Create database and tables

First, we need to create a database and create two tables in the database: product table and price table.

1. Product table: This table is used to store basic information about the product, such as product name, description, pictures, etc. The structure of the table is as follows:

   CREATE TABLE products (
   id int(11) NOT NULL AUTO_INCREMENT,
   name varchar (255) NOT NULL,
   description text,
   image varchar(255),
   PRIMARY KEY (id)
   ) ENGINE=InnoDB DEFAULT CHARSET=utf8;

2. Price table: This table is used to store price information of products. Each product can have multiple prices. The structure of the table is as follows:

   CREATE TABLE prices (
   id int(11) NOT NULL AUTO_INCREMENT,
   product_id int (11) NOT NULL,
   price decimal(10,2) NOT NULL,
   PRIMARY KEY (id),
   KEY product_id (product_id)
   ) ENGINE=InnoDB DEFAULT CHARSET=utf8;

   In this table, product_id is a foreign key, used to associate to the product id in the product table.

3. Data filling

In order to facilitate demonstration, we need to fill in some test data in the product table and price table.

Insert some product data into the product table, such as:

INSERT INTO products (name, description, image) VALUES
('Product 1', 'Product 1 Description', 'image1.jpg'),
('Product 2', 'Product 2 Description', 'image2.jpg' ),
('Product 3', 'Product 3 Description', 'image3.jpg');

Insert some price data in the price list, such as:

INSERT INTO prices (product_id, price) VALUES
(1, 100),
(1, 200),
(2, 150) ,
(3, 300);

4. Implement the search function

Next, we will implement the product price range search function through PHP code.

1. First, we need to create a search form for users to enter a price range:

   
   
   
   

   The minimum price and maximum price entered by the user will be passed to the search.php file.

2. In the search.php file, we need to read the price range entered by the user and query the data from the database based on this range.

   $minPrice = $_GET['min_price'];
   $maxPrice = $_GET['max_price'];

   // Verify user input Price range
   if (!is_numeric($minPrice) || !is_numeric($maxPrice)) {
   echo 'Please enter a valid price range';
   exit;
   }

   // Query the database based on the price range
   $query = "SELECT p.name, p.description, p.image, pr.price FROM products p

         JOIN prices pr ON p.id = pr.product_id
         WHERE pr.price BETWEEN $minPrice AND $maxPrice";

   ... (Omit other codes). ..

   ?>

3. In the search.php file, we need to display the query results to the user, and we can use a loop to traverse the results.

   ...(Omit other codes)...

   // Traverse the query results and display the results to the user
   while ($row = mysqli_fetch_assoc($result) ) {
   echo "Product name:" . $row['name'] . "
   ";
   echo "Product description: " . $row['description'] . "
   ";
   echo "Product image:
   ";
   echo "Product price: " . $row['price'] . "
   ";
   echo "-------------------------
   ";
   }
   ? >

So far, we have completed the implementation of the product price range search function.

Summary:

Through the above steps, we use PHP Developed a shopping mall website and implemented the product price range search function. During the actual development process, you can further improve and optimize this function according to your needs, such as paging and sorting the search results. I hope this article will be helpful to readers , which can play a certain guiding role in actual development.

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