How to use thinkorm to realize database data backup and recovery

How to use ThinkORM to realize database data backup and recovery

Introduction:
In the development process, database data backup and recovery is a very important part. When the database fails or data is lost, the backup and recovery functions can help us quickly restore data and ensure the normal operation of the system. ThinkORM is a lightweight PHP database operation tool. It provides a convenient API interface, making database backup and recovery easy to use. This article will introduce how to use ThinkORM to implement database data backup and recovery.

Step 1: Install ThinkORM
First, execute the following command in the project root directory to install ThinkORM:

composer require topthink/think-orm

Step 2: Configure database connection
# in the project root directory ##config/database.php file, configure the connection information of the database, for example:

return [
    // 默认使用的数据库连接配置
    'default'     => 'mysql',
    
    // 数据库连接配置信息
    'connections' => [
        'mysql' => [
            // 数据库类型
            'type'     => 'mysql',
            // 服务器地址
            'hostname' => '127.0.0.1',
            // 数据库名
            'database' => 'test',
            // 数据库用户名
            'username' => 'root',
            // 数据库密码
            'password' => 'root',
            // 数据库连接端口
            'hostport' => '',
            // 数据库连接参数
            'params'   => [],
            // 数据库编码默认采用utf8
            'charset'  => 'utf8',
            // 数据库表前缀
            'prefix'   => '',
        ],
    ]
];

Step 3: Create a model for data backup and recovery

Create a
Backup in the project Model to handle the logic of data backup and recovery. Create a new file appmodelBackup.php, the code is as follows:

namespace appmodel;

use thinkModel;

class Backup extends Model
{
    // 设置表名
    protected $name = 'backup';
    
    // 设置主键字段
    protected $pk = 'id';
    
    // 设置日期字段的格式
    protected $dateFormat = 'Y-m-d H:i:s';
}

Step 4: Implement the data backup function

In the
Backup model, add a new method backupData(), used to implement data backup logic. The code is as follows:

public function backupData()
{
    // 获取当前时间作为备份文件名
    $filename = date('YmdHis') . '.sql';
    
    // 获取数据库连接配置信息
    $config = config('database.connections.mysql');
    
    // 构建备份命令
    $command = sprintf(
        'mysqldump -u%s -p%s -h%s %s > %s',
        $config['username'],
        $config['password'],
        $config['hostname'],
        $config['database'],
        $filename
    );
    
    // 执行备份命令
    exec($command, $output, $code);
    
    // 备份成功时保存备份信息到数据库
    if ($code === 0) {
        $this->create([
            'filename' => $filename,
            'create_time' => date('Y-m-d H:i:s'),
        ]);
        return true;
    } else {
        return false;
    }
}

Step 5: Implement the data recovery function

In the
Backup model, add a new method restoreData($filename) for implementation Data recovery logic. The code is as follows:

public function restoreData($filename)
{
    // 获取数据库连接配置信息
    $config = config('database.connections.mysql');
    
    // 构建恢复命令
    $command = sprintf(
        'mysql -u%s -p%s -h%s %s < %s',
        $config['username'],
        $config['password'],
        $config['hostname'],
        $config['database'],
        $filename
    );
    
    // 执行恢复命令
    exec($command, $output, $code);
    
    // 恢复成功时返回true
    if ($code === 0) {
        return true;
    } else {
        return false;
    }
}

Step 6: Use the backup and recovery function

In the controller or business logic, you can use the backup and recovery function through the
Backup model. The sample code is as follows:

use appmodelBackup;

// 创建备份实例
$backup = new Backup();

// 备份数据
$backup->backupData();

// 恢复数据
$backup->restoreData('20220101.sql');

Summary:

Through the introduction of this article, we have learned how to use ThinkORM to implement the data backup and recovery functions of the database. Through the
exec() function to execute system commands, we can easily call the mysqldump and mysql commands to achieve data backup and recovery. The Backup model's backupData() and restoreData() methods provide a simple and easy-to-use interface that can quickly implement data backup and recovery operations. I hope this article will be helpful to you when dealing with database backup and recovery issues during project development.

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