PHP development to build an enterprise resource planning (ERP) system with sales contract execution function

PHP development to build an enterprise resource planning (ERP) system with sales contract execution function

Abstract: Enterprise resource planning (ERP) systems play a vital role in modern enterprise management. This article describes how to develop a powerful ERP system using PHP to implement the execution and management of sales contracts. We will use sample code to demonstrate how to use the PHP programming language to implement these functions.

1. System requirements analysis and design

Before starting development, we must first conduct system requirements analysis and design. The ERP system for the sales contract execution function should include the following components:

1. Contract management system: This system should include the functions of creating, editing, deleting and querying contracts.
2. Customer management system: This system should include the functions of creating, editing, deleting and querying customers.
3. Sales order management system: This system should include the creation, editing, deletion and query functions of sales orders.
4. Shipping management system: This system should include the creation, editing, deletion and query functions of shipping notices.
5. Collection management system: This system should include the creation, editing, deletion and query functions of collection orders.
6. Contract execution tracking system: This system should be able to track the progress and status of contract execution, such as the number of unshipped orders, the amount to be collected, etc.

2. Database design

Before designing the database, we need to determine the entities and attributes of the system. Based on the requirements analysis, we can identify the following entities: Contract, Customer, Sales Order, Shipping Notification, and Collection Note.

We can use MySQL as the database management system and design the corresponding table structure.

Sample code:

-- 创建合同表
CREATE TABLE contracts (
    contract_id INT PRIMARY KEY AUTO_INCREMENT,
    contract_number VARCHAR(100) NOT NULL,
    contract_date DATE NOT NULL,
    customer_id INT NOT NULL,
    amount DECIMAL(10,2) NOT NULL,
    status ENUM('active', 'completed', 'cancelled') NOT NULL
);

-- 创建客户表
CREATE TABLE customers (
    customer_id INT PRIMARY KEY AUTO_INCREMENT,
    customer_name VARCHAR(100) NOT NULL,
    customer_address VARCHAR(100) NOT NULL,
    customer_phone VARCHAR(20) NOT NULL
);

-- 创建销售订单表
CREATE TABLE sales_orders (
    order_id INT PRIMARY KEY AUTO_INCREMENT,
    contract_id INT NOT NULL,
    order_date DATE NOT NULL,
    quantity INT NOT NULL,
    amount DECIMAL(10,2) NOT NULL
);

-- 创建发货通知表
CREATE TABLE delivery_notices (
    notice_id INT PRIMARY KEY AUTO_INCREMENT,
    order_id INT NOT NULL,
    notice_date DATE NOT NULL,
    shipping_address VARCHAR(100) NOT NULL,
    status ENUM('shipped', 'pending', 'cancelled') NOT NULL
);

-- 创建收款单表
CREATE TABLE receipts (
    receipt_id INT PRIMARY KEY AUTO_INCREMENT,
    contract_id INT NOT NULL,
    receipt_date DATE NOT NULL,
    amount DECIMAL(10,2) NOT NULL
);

3. PHP development

In the PHP development process, we need to use the PHP programming language to connect to the database, perform data operations, and implement various system functions. Function. The following is a sample code:

// 连接数据库
$conn = mysqli_connect("localhost", "username", "password", "erp_system");

// 创建合同
function createContract($number, $date, $customerId, $amount) {
    global $conn;
    $query = "INSERT INTO contracts (contract_number, contract_date, customer_id, amount, status) VALUES ('$number', '$date', $customerId, $amount, 'active')";

    if (mysqli_query($conn, $query)) {
        echo "合同创建成功";
    } else {
        echo "合同创建失败：" . mysqli_error($conn);
    }
}

// 编辑合同
function editContract($contractId, $number, $date, $customerId, $amount) {
    global $conn;
    $query = "UPDATE contracts SET contract_number='$number', contract_date='$date', customer_id=$customerId, amount=$amount WHERE contract_id=$contractId";

    if (mysqli_query($conn, $query)) {
        echo "合同编辑成功";
    } else {
        echo "合同编辑失败：" . mysqli_error($conn);
    }
}

// 删除合同
function deleteContract($contractId) {
    global $conn;
    $query = "DELETE FROM contracts WHERE contract_id=$contractId";

    if (mysqli_query($conn, $query)) {
        echo "合同删除成功";
    } else {
        echo "合同删除失败：" . mysqli_error($conn);
    }
}

// 查询合同
function getContract($contractId) {
    global $conn;
    $query = "SELECT * FROM contracts WHERE contract_id=$contractId";
    $result = mysqli_query($conn, $query);

    while ($row = mysqli_fetch_assoc($result)) {
        echo "合同编号：" . $row['contract_number'] . "<br>";
        echo "合同日期：" . $row['contract_date'] . "<br>";
        echo "客户ID：" . $row['customer_id'] . "<br>";
        echo "合同金额：" . $row['amount'] . "<br>";
        echo "合同状态：" . $row['status'] . "<br>";
    }
}

// 其他功能的开发类似，这里不再赘述。

4. System testing and deployment

After the development is completed, we need to test the system to ensure that all functions can operate normally. If there are no problems with the system, we can deploy it to the server for corporate use.

Conclusion

By using PHP development, we can build a powerful ERP system for sales contract execution. This kind of system can improve the execution efficiency and management effect of sales contracts, help companies achieve sales targets, and improve customer satisfaction. At the same time, we demonstrated how to use the PHP programming language to implement system functions during the development process, hoping to be helpful to readers.

References:

1. https://www.w3schools.com/php/
2. https://www.php.net/

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