用于PHP+MySQL系统中备份MySQL的数据，导出时可以选择下载整个数据库备份（只在数据库较小时使用），或分为多个文件导出并保存在服务器的形式，多文件时数据文件大小可以自由定义，导出导入都是分页并自动完成，理论上无论多大的数据库，它都可以处理-For PHP+ MySQL backup system MySQL data, you can choose to download the entire　backups (only when used in a smaller ) export, or exported into multiple files and saved in the form of servers, data files when the file size can be more freedom to define, and export and import are automatically paged in theory no matter how much the , it can handle