thinkphp5模型的定义

使用Model类

namespace app\index\model;

use think\Model;

class User extends Model
{
}

默认识别主键

namespace app\index\model;

use think\Model;

class User extends Model
{
    protected $pk = 'uid';
}

来源：https://www.cnblogs.com/CWJDD/p/11458987.html