ThinkPHP6 查询 一个月内 每天用户登录情况

统计用户每天登录次数，今天往前30天即：

        $start_time = strtotime('-1 month',time());
       

 格式化（时间戳格式化为普通时间格式）时间 即可取得当天内的数

        $where= [];
        $start_time = strtotime('-1 month',time());
        $end_time = time();
        $where[]=['create_time','between',[$start_time,$end_time]];
        $data = Db::name('user_login')->field('FROM_UNIXTIME(create_time,"%Y-%m-%d") as c_time,count(id) as total')->where($where)->group('c_time')->select();