Using PHP to develop an enterprise resource planning (ERP) system that implements inventory allocation functions

Using PHP to develop an enterprise resource planning (ERP) system that implements inventory allocation functions

With the continuous development of information technology, enterprises need to solve more and more business problems in daily operations. One of them is inventory transfer, which is the transfer of inventory from one warehouse to another to meet production and sales needs. In order to improve the efficiency and accuracy of allocation, it is necessary to develop an enterprise resource planning (ERP) system that can automatically handle inventory allocation.

This article will introduce how to use PHP to develop an ERP system that implements inventory transfer functions, and provide some simple code examples.

1. Requirements Analysis
Before development, we first need to clarify the system requirements. Generally speaking, an ERP system with inventory transfer function needs to have the following basic functions:

1. Warehouse management: warehouse information can be added, edited and deleted, including warehouse name and address, etc.
2. Product management: You can add, edit and delete product information, including product name, quantity and price, etc.
3. Transfer function: You can transfer goods from one warehouse to another warehouse according to demand, and update the inventory information of the warehouse and goods.

2. Technology Selection
Considering the advantages of PHP in Web development, we chose to use PHP for development. In addition, a MySQL database is needed to store warehouse and product information.

3. Database design
Create a database named erp in MySQL and create the following two tables:

1. warehouses table: used to store warehouses Information, including warehouse ID and name.

   CREATE TABLE warehouses (
     id INT AUTO_INCREMENT PRIMARY KEY,
     name VARCHAR(100) NOT NULL
   );

2. products table: used to store product information, including product ID, name, warehouse ID, quantity and price.

   CREATE TABLE products (
     id INT AUTO_INCREMENT PRIMARY KEY,
     name VARCHAR(100) NOT NULL,
     warehouse_id INT NOT NULL,
     quantity INT NOT NULL,
     price DECIMAL(10, 2) NOT NULL,
     FOREIGN KEY (warehouse_id) REFERENCES warehouses(id)
   );

4. PHP code implementation

1. Connect to database

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

2. Add warehouse

   <?php
   $name = $_POST['name'];
   
   $sql = "INSERT INTO warehouses (name) VALUES ('$name')";
   
   if ($conn->query($sql) === TRUE) {
    echo "仓库添加成功";
   } else {
    echo "添加仓库失败: " . $conn->error;
   }
   
   $conn->close();
   ?>

3. Add products

   <?php
   $name = $_POST['name'];
   $warehouse_id = $_POST['warehouse_id'];
   $quantity = $_POST['quantity'];
   $price = $_POST['price'];
   
   $sql = "INSERT INTO products (name, warehouse_id, quantity, price) VALUES ('$name', '$warehouse_id', '$quantity', '$price')";
   
   if ($conn->query($sql) === TRUE) {
    echo "商品添加成功";
   } else {
    echo "添加商品失败: " . $conn->error;
   }
   
   $conn->close();
   ?>

4. Transfer products

   <?php
   $product_id = $_POST['product_id'];
   $source_warehouse = $_POST['source_warehouse'];
   $target_warehouse = $_POST['target_warehouse'];
   $quantity = $_POST['quantity'];
   
   // 检查是否有足够的库存可供调拨
   $check_sql = "SELECT quantity FROM products WHERE id = $product_id AND warehouse_id = $source_warehouse";
   $result = $conn->query($check_sql);
   if ($result->num_rows > 0) {
    $row = $result->fetch_assoc();
    $available_quantity = $row['quantity'];
    if ($available_quantity >= $quantity) {
   
        // 更新源仓库的库存
        $source_sql = "UPDATE products SET quantity = quantity - $quantity WHERE id = $product_id AND warehouse_id = $source_warehouse";
        $conn->query($source_sql);
   
        // 更新目标仓库的库存
        $target_sql = "UPDATE products SET quantity = quantity + $quantity WHERE id = $product_id AND warehouse_id = $target_warehouse";
        $conn->query($target_sql);
   
        echo "商品调拨成功";
    } else {
        echo "库存不足，无法调拨";
    }
   } else {
    echo "无此商品";
   }
   
   $conn->close();
   ?>

5. Summary
This article introduces how to Use PHP to develop an ERP system that implements inventory transfer functions. By establishing database tables for warehouses and commodities, we can use PHP code to implement the functions of adding, editing, and deleting warehouses and commodities, and to realize the allocation function of commodities.

Of course, the above code is just a simple example. In actual development, security, interface design, permission management and other issues also need to be considered. I hope this article will be helpful to everyone in developing ERP systems.

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