ThinkPHP6에서 데이터 백업 작업을 수행하는 방법은 무엇입니까?

return [
    // 数据库类型
    'type'            => 'mysql',
    // 服务器地址
    'hostname'        => '127.0.0.1',
    // 数据库名
    'database'        => 'database_name',
    // 用户名
    'username'        => 'root',
    // 密码
    'password'        => 'password',
    // 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'          => '',
    // 是否需要进行SQL性能分析
    'sql_explain'     => false,
    // 是否需要进行数据备份
    'backup'          => true,
    // 数据备份目录
    'backup_path'     => '/backup/',
    // 数据备份文件的最大卷大小(字节)
    'backup_max_size' => 100 * 1024 * 1024,
    // 数据库备份文件命名格式
    'backup_name'     => '',
];

use thinkDb;
use thinkacadeConfig;
use thinkacadeCache;

class Backup
{
    protected $options = [
        'path' => '',
        'part' => '',
        'compress' => 0,
        'level' => 9,
        'lock' => true,
    ];
    
    protected $config;
    
    public function __construct()
    {
        // 获取数据库配置
        $this->config = Config::get('database');
    }
    
    // 备份数据库
    public function backup()
    {
        $database = $this->config['database'];
        $path = $this->config['backup_path'];
        $part = isset($this->config['backup_part_size']) ? $this->config['backup_part_size'] : $this->options['part'];
        $compress = isset($this->config['backup_compress']) ? $this->config['backup_compress'] : $this->options['compress'];
        $level = isset($this->config['backup_compress_level']) ? $this->config['backup_compress_level'] : $this->options['level'];
        
        // 检查备份目录是否存在
        if (!is_dir($path)) {
            mkdir($path, 0755, true);
        }
        
        // 初始化
        $file = [
            'name' => $database . '_' . date('YmdHis'),
            'part' => 1,
        ];
        
        // 获取表结构
        $sql = "SHOW TABLES";
        $result = Db::query($sql, true);
        
        // 遍历所有表备份数据
        foreach ($result as $val) {
            $sql = "SHOW CREATE TABLE `" . $val['Tables_in_' . $database] . "`";
            $res = Db::query($sql, true);
            $sql = "--
";
            foreach ($res as $row) {
                $sql .= $row['Create Table'] . ";

";
            }
            
            $start = 0;
            $size = 1000;
            $table = $val['Tables_in_' . $database];
            
            // 备份数据
            while (true) {
                $sqls = "SELECT * FROM `" . $table . "` LIMIT {$start}, {$size}";
                $result = Db::query($sqls, true);
                $numRows = count($result);
                if ($numRows < 1) {
                    break;
                }
                
                $sql .= "--
";
                $sql .= "-- dump data for {$table} 
";
                $sql .= "--
";
                
                foreach ($result as $row) {
                    $row = array_map('addslashes', $row);
                    $sql .= "INSERT INTO `{$table}` VALUES ('" . implode("','", $row) . "');
";
                }
                
                $start += $numRows;
            }
            
            // 写入SQL语句
            $this->write($sql, $file);
        }
        
        // 结束备份流程
        $this->config = [];
        
        return true;
    }
    
    // 写入SQL语句
    protected function write($sql, &$file)
    {
        $size = strlen($sql);
        
        if ($size + $file['part'] <= $this->config['backup_max_size']) {
            $file['sql'] .= $sql;
        } else {
            $this->save($file);
            $file['sql'] = $sql;
            $file['part']++;
        }
    }
    
    // 保存备份文件
    protected function save(&$file)
    {
        $name = $file['name'] . "_" . $file['part'] . ".sql";
        $path = $this->config['backup_path'] . $name;
        $sql = $file['sql'];
        
        if ($file['compress'] && function_exists('gzcompress')) {
            $sql = gzcompress($sql, $file['level']);
        }
        
        if ($this->config['backup_lock']) {
            $lock = "{$this->config['backup_path']}backup.lock";
            file_put_contents($lock, time());
        }
        
        file_put_contents($path, $sql);
    }
}