How to use PHP to write the code for the inventory slow-moving analysis function in the inventory management system

How to use PHP to write the slow-selling inventory analysis function code in the inventory management system

Inventory management is very important for enterprises, and inventory slow-moving analysis is one of the key functions , can help companies monitor product sales in real time, discover unsalable products in a timely manner and take corresponding measures. This article will introduce how to use PHP to write the inventory slow-selling analysis function code in the inventory management system, and give corresponding code examples.

1. Database design

First, we need to design the corresponding table structure in the database to store product information and sales records. We can design two tables: products and sales.

1. The products table contains the following fields:

   • id: product ID
   • name: product name
   • quantity: inventory Quantity

2. The sales table contains the following fields:

   • id: Sales record ID
   • product_id: Product ID
   • quantity: Sales quantity
   • sales_date: Sales date

2. Implementation of unsalable product analysis code

In the inventory management system, We can use PHP to write functional code for slow-selling product analysis. The following is a code example to implement this function:

<?php
// 连接数据库
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "inventory";

$conn = new mysqli($servername, $username, $password, $dbname);
if ($conn->connect_error) {
    die("连接数据库失败: " . $conn->connect_error);
}

// 查询库存滞销产品
$sql = "SELECT p.id, p.name, p.quantity, SUM(s.quantity) AS total_sales
        FROM products p
        LEFT JOIN sales s ON p.id = s.product_id
        GROUP BY p.id
        HAVING total_sales < p.quantity";

$result = $conn->query($sql);

if ($result->num_rows > 0) {
    // 输出滞销产品信息
    echo "<h2>滞销产品列表:</h2>";
    echo "<table><tr><th>产品ID</th><th>产品名称</th><th>库存数量</th><th>总销量</th></tr>";
    while($row = $result->fetch_assoc()) {
        echo "<tr><td>".$row["id"]."</td><td>".$row["name"]."</td><td>".$row["quantity"]."</td><td>".$row["total_sales"]."</td></tr>";
    }
    echo "</table>";
} else {
    echo "没有滞销产品记录。";
}

$conn->close();
?>

The above code first connects to the database, and then performs a query operation to obtain information about slow-selling products. Use LEFT JOIN to connect the products table and sales table, and use GROUP BY and HAVING grouping to filter out products whose total sales volume is less than the inventory quantity. Finally, output a list of slow-moving products through a loop.

3. Apply this function

Save the above code as a .php file and deploy it to the server. When a user accesses this page, the analysis of slow-selling products will be automatically performed and the results will be displayed in a table.

Users can take corresponding measures based on the information of slow-selling products, such as price reduction promotions, repositioning the market, etc., to reduce the inventory quantity of slow-selling products.

Summary:

This article introduces how to use PHP to write the inventory slow-selling analysis function code in the inventory management system. By properly designing the database and writing corresponding code, we can easily implement the function of slow-selling inventory analysis, help companies respond to the problem of slow-selling products in a timely manner, and improve inventory management efficiency.

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