如何使用ThinkPHP6实现数据库备份与恢复

 'mysql', // 数据库连接DSN配置 'dsn' => '', // 服务器地址 'hostname' => 'localhost', // 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' => '3306', // 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' => 'think_', // 数据库调试模式 'debug' => false, // 数据库备份路径，没有则自动创建 'path' => '', // 数据库备份卷大小，单位为字节，设为0表示不限制备份大小 'part' => 20971520, // 数据库备份文件压缩格式，这里是gzip 'compress' => 'gzip', // 数据库备份文件名 'filename' => '', // 数据库备份文件是否需要压缩 'zip' => true, // 数据库备份文件是否需要分卷备份 'split' => true, // 数据库备份时是否将存储过程和触发器一起备份 'level' => 9, // 数据库备份文件的存储路径，最好为绝对路径，这也是最关键的路径 'path' => '/data/mysql/', ];

backupConfig = config('database'); } public function backup() { // 防止备份数据过程超时 set_time_limit(0); $database = $this->backupConfig['database']; $filename = date('Ymd-His', time()) . ".sql"; $path = $this->backupConfig['path'].$filename; // 检查目录是否存在或者是否有权限写入 if(!is_dir($this->backupConfig['path'])){ mkdir($this->backupConfig['path'], 0755, true); }else{ if(!is_writeable($this->backupConfig['path'])){ chmod($this->backupConfig['path'], 0755); } } // 备份所有数据表 $result = Db::query("SHOW TABLES"); $tables = array(); foreach($result as $index => $row){ $tables[] = $row['Tables_in_'.$database]; } // 备份所有表结构和表数据 $content = ''; foreach($tables as $table){ $content = $content . "/*" . PHP_EOL; $content = $content . "表名：" . $table . PHP_EOL; $content = $content . "表结构：" . PHP_EOL; $content = $content . "*/" . PHP_EOL; $content = $content . $this->backupTableSchema($table); $content = $content . "/*" . PHP_EOL; $content = $content . "表数据：" . PHP_EOL; $content = $content . "*/" . PHP_EOL; $content = $content . $this->buildInsertSql($table); } // 是否需要压缩 if ($this->backupConfig['zip']) { $zip = new ZipArchive(); $zipfilename = $this->backupConfig['path'] . date('Ymd-His', time()) . ".zip"; if ($zip->open($zipfilename, ZipArchive::OVERWRITE) === TRUE) { $zip->addFile($path,$filename); $zip->close(); // 删除非压缩的文件 unlink($path); } else { // 备份失败 } } } // 备份表结构 protected function backupTableSchema($table) { $database = $this->backupConfig['database']; $result = Db::query("SHOW CREATE TABLE `" . $table . "`"); $create = $result[0]['Create Table'] . ";" . PHP_EOL.PHP_EOL; return $create; } // 备份表数据 protected function buildInsertSql($table) { $database = $this->backupConfig['database']; $result = Db::query("SELECT * FROM `" . $table . "`"); $insert = ''; foreach ($result as $key => $value) { $keys = array_keys($value); $values = array_map(array(Db::class, 'quote'), array_values($value)); $values = join(",", $values); $insert .= "INSERT INTO `" . $table . "` (`" . join("`,`", $keys) . "`) VALUES (" . $values . ");" . PHP_EOL; } $insert .= PHP_EOL; return $insert; } }

http://localhost/backup/backup

backupConfig = config('database'); } public function recovery() { // 防止还原数据过程超时 set_time_limit(0); ini_set('memory_limit', '1024M'); $filename = input('get.filename'); // 读取备份文件 if ($this->backupConfig['zip']) { $zip = new ZipArchive(); if ($zip->open($this->backupConfig['path'].$filename) === true) { $filename = $zip->getNameIndex(0); $zip->extractTo($this->backupConfig['path']); $zip->close(); } } $content = file_get_contents($this->backupConfig['path'] . $filename); // 使用";"分割内容 $statements = explode(";", $content); // 开始事务 Db::startTrans(); foreach ($statements as $index => $stmt) { if (trim($stmt) === '') { continue; } $results = Db::query($stmt); if ($results === false) { Db::rollback(); return false; } } // 提交事务 Db::commit(); // 删除非压缩的文件 unlink($this->backupConfig['path'] . $filename); return true; } }

http://localhost/recovery/recovery?filename=20200101-121212.sql.zip