里面有两个PHP执行文件，一个是备份整个数据库的（适用于小型数据库）并生成相应的PHP文件，该PHP文件可以直接运行，运行后的结果是重建一个和原来一模一样的数据库！另一个是针对大型数据表的，原则是不管多大的表都可以备份-There are two PHP executable file, a backup (for small s) and generate the corresponding PHP file of the entire , the PHP file can be run directly, the results after running a reconstruction of the original and exactly the same ! Another is for large tables, in principle, no matter how much is the table can be backed up