一、查
①select($where = '', $data = '*', $limit = '', $order = '', $group = '', $key='')
②listinfo($where = '', $order = '', $page = 1, $pagesize = 20, $key='', $setpages = 10,$urlrule = '',$array = array(), $data = '*')
③get_one($where = '', $data = '*', $order = '', $group = '')
④query($sql)
二、增
①insert($data, $return_insert_id = false, $replace = false)
②insert_id()
三、改
①update($data, $where = '')
四、刪
① delete($where)