How to use PHP to develop the bill archiving function of the accounting system - Provides a development guide for the bill archiving function

How to use PHP to develop the bill archiving function of the accounting system

Introduction: With the rapid development of the Internet, the accounting system has become an important tool for modern people to manage finances . Among them, the importance of bill archiving function has become increasingly prominent. This article will give a development guide for using PHP to develop the bill archiving function of the accounting system, and provide specific code examples. Hope it can provide some useful reference for developers.

1. Design the database table structure

First, we need to design a suitable database table structure to store bill data. A common design solution is to create two tables, one to store the basic information of the bill and the other to store the archived record of the bill. The following is a simple example:

1. Bill table (bill)
2. id: bill ID (auto-increment primary key)
3. amount: amount
4. category: Category
5. date: Timestamp
6. description: Description
7. Archive record table (archive)
8. id: Archive record ID (auto-increment primary key )
9. bill_id: Bill ID (foreign key)
10. archive_date: Archive date
11. archive_file: Archive file path

2. Write PHP code

1. Connect to the database

First, we need to connect to the database in PHP. This can be achieved using extension libraries such as MySQLi or PDO. The following is a sample code using MySQLi:

<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database";

// 创建连接
$conn = new mysqli($servername, $username, $password, $dbname);

// 检查连接是否成功
if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
}

2. Enter bill data

When a user adds a bill using the accounting system, we need to store the bill data in the bill of the database table. The following is a simple sample code for inserting data:

<?php
$amount = 100.00;
$category = "餐饮";
$date = time();
$description = "午餐";

$sql = "INSERT INTO bill (amount, category, date, description)
VALUES ($amount, '$category', $date, '$description')";

if ($conn->query($sql) === TRUE) {
    echo "账单添加成功";
} else {
    echo "添加账单失败: " . $conn->error;
}

3. Archiving bill data

When a bill needs to be archived, we need to extract the bill data from the bill table Move it to the archive table and generate an archive file. The following is a sample code for a simple archiving function:

<?php
$bill_id = 1;
$archive_date = date("Y-m-d");
$archive_file = "archive/bill_".$bill_id."_".$archive_date.".pdf";

$sql = "INSERT INTO archive (bill_id, archive_date, archive_file)
VALUES ($bill_id, '$archive_date', '$archive_file')";

if ($conn->query($sql) === TRUE) {
    echo "账单归档成功";
} else {
    echo "归档账单失败: " . $conn->error;
}

// 将账单数据从bill表中移除
$sql = "DELETE FROM bill WHERE id = $bill_id";

if ($conn->query($sql) === TRUE) {
    echo "账单删除成功";
} else {
    echo "删除账单失败: " . $conn->error;
}

4. Query archive records

If the user needs to view the archive records, we can use SQL query statements to retrieve the archive records from the archive table Get the data and display the results to the user. The following is a simple sample code for querying archived records:

<?php
$sql = "SELECT * FROM archive";

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

if ($result->num_rows > 0) {
    // 输出数据
    while($row = $result->fetch_assoc()) {
        echo "归档记录ID: " . $row["id"]. " - 归档日期: " . $row["archive_date"]. " - 归档文件路径: " . $row["archive_file"]. "<br>";
    }
} else {
    echo "没有查询到归档记录";
}

3. Summary

The above is a simple example of using PHP to develop the bill archiving function of an accounting system. By designing an appropriate database table structure, and writing the corresponding PHP code, we can implement the bill archiving function in the accounting system. Of course, this is just a basic example, and developers can make corresponding improvements and extensions according to their own needs. I hope this article can provide some reference and help for developers when developing accounting systems.

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