-  User table , for storing the user information

|Field|Type|Allow empty|Default|Comment|
|:----    |:-------    |:--- |-- -|------      |
|uid      |int(10)     |no   |    |             |
|username |varchar(20) |no   |    |   your username    |
|password |varchar(50) |no   |    |   your password      |
|name     |varchar(15) |yes   |    |    your name     |
|reg_time |int(11)     |yes  | 0  |   register time  |

- Remarks：none