慢慢懂了

public function getWriteOffCodeExchangeList($id_shop, $city, $type, $status, $tag, $page, $card_rank = '')
    {
        $filterMd5 = substr(md5($id_shop . $city . $type . $status . $tag . $card_rank), 0, 12);
        $cache_key = getCacheKey(Point::MEMBER_ACTIVITY_CENTER_WRITE_OFF_CODE_EXCHANGE_LIST, $filterMd5, $page);
        $data = cache($cache_key);
        if (!empty($data)) {
            if ($data == -1) {
                return [];
            }
        }
        // 从数据库获取
        if (empty($data)) {
            $condition = [
                'type' => ModExchange::EXCHANGE_TYPE_WRITE_OFF_CODE,
                'status' => ModExchange::EXCHANGE_STATUS_OK,
                'activity_center_show' => 1,
                'id_shop' => ['IN', [7,8,88]],
            ];
            if (!empty($city)) {
                $condition['activity_address'] = $city;
            }
            if (!empty($type)) {
                $condition['activity_type'] = $type;
            }
            if (!empty($status)) {
                if ($status == 1) {
                    $condition['activity_start'] = ['gt', time()];
                } elseif ($status == 2) {
                    $condition['activity_start'] = ['lt', time()];
                    $condition['activity_end'] = ['gt', time()];
                } elseif ($status == 3) {
                    $condition['activity_end'] = ['lt', time()];
                }
            }
            $db = db($this->table_point_exchange, $this->connection)
                ->field('id_ep,id_shop,exchange_name,head_image,range_user,'
                    . 'activity_start,activity_end,activity_address,activity_type,'
                    . 'activity_tags,points,margin_nums')
                ->where($condition)
                ->page($page, 10);

            $filterTags = explode(',', $tag);
            if (!empty($tag)) {
                foreach ($filterTags as $t) {
                    if (!empty($t)) {
                        $conditionOrTags[] = 'activity_tags =' . $t;
                        $conditionOrTags[] = 'activity_tags like \'' . $t . ',%\'';
                        $conditionOrTags[] = 'activity_tags like \'%,' . $t . ',%\'';
                        $conditionOrTags[] = 'activity_tags like \'%,' . $t . '\'';
                    }
                }
                if (!empty($conditionOrTags)) {
                    $db->where(function ($query) use ($conditionOrTags) {
                        foreach ($conditionOrTags as $k => $conditionOr) {
                            $query->whereOr($conditionOr);
                        }
                    });
                }
            }

            if (ShopID::isFilaClub($id_shop)) {
                $order_str = '(case when id_shop = ' . $id_shop . ' then 1 else 0 end) desc,';
                if ($card_rank) {
                    $order_str .= '(case when FIND_IN_SET(' . $card_rank . ',range_user)>0 then 1 else 0 end) desc,';
                }
                $order_str .= 'id_ep desc';
                $db = $db->orderRaw($order_str);
            } else {
                $order_str = '';
                if ($card_rank) {
                    $order_str .= '(case when FIND_IN_SET(' . $card_rank . ',range_user)>0 then 1 else 0 end) desc,';
                }
                $order_str .= 'id_ep desc';
                $db = $db->orderRaw($order_str);
            }

//            $data = $db->fetchSql()->select();
//            var_dump($data);
//            die;
            $data = $db->select();
            if (empty($data)) {
                // 防止穿透
                cache($cache_key, -1, 300);
                return [];
            }
            cache($cache_key, $data, 600);
        }


        $ModWriteOffCodeTags = new ModWriteOffCodeTags();
        $tagsList = $ModWriteOffCodeTags->getTagsList();
        $tagsList = array_column($tagsList, 'val', 'k');

        $ModShops = new ModShops();
        $id_shops = [2,5,77];
        $appidList = [];
        foreach ($id_shops as $val) {
            $shopInfo = $ModShops->getShopInfoOne($val);
            $appidList[$val] = $shopInfo['wx_appid'];
        }
        foreach ($data as &$val) {
            $val['status_msg'] = '';
            if ($val['activity_start'] > time()) {
                $val['status_msg'] = '未开始';
            } elseif ($val['activity_end'] < time()) {
                $val['status_msg'] = '已结束';
            } else {
                $val['status_msg'] = '进行中';
            }
            $activity_tags = explode(',', $val['activity_tags']);
            unset($val['activity_tags']);
            foreach ($activity_tags as $t) {
                if (!empty($t) && isset($tagsList[$t])) {
                    $val['activity_tags'][] = $tagsList[$t];
                }
            }
            $val['appid'] = $appidList[$val['id_shop']] ?? '';
            $val['path'] = '/packages/pointsMall/details/index';
            unset($val['activity_start'], $val['activity_end']);
        }

        return array_values($data);
    }