Redis ranking

 redis Ordered set of zset Be similar to Java Of SoretedSet and HashMap The combination of , On the one hand, it is a set, Can guarantee internal value Uniqueness , On the other hand, it can give each value Give one score, On behalf of the score Sort weight for .

 zset It can be used to store students' grades ,value Value is student's ID,score It's the student's examination result , Students' nouns can be obtained by ranking their scores . It can also be used to store fan lists ,value Users who are fans ID,score It's about time , You can sort the fan list according to the time of interest .

 public function rankingList()
    {
        // Connect redis
        $redis = new Redis();
        $redis->connect('127.0.0.1', '6379');
        // Query data 
        $data =  Money::select()->toArray();
//        dd($data);
        // Array processing    Cumulative Commission 
//        $newArr = array();
//        foreach ($data as $v)
//        {
//            if (array_key_exists($v['tid'],$newArr))
//            {
//                $newArr[$v['tid']]['money'] += $v['money'];
//            }
//            else {
//                $newArr[$v['tid']] = $v;
//            }
//        }
//        dd($newArr);
//         Add to redis Ordered set 
        foreach ($data as $v)
        {
            $redis->zincrby('tag1',$v['money'],$v['tid']);
        }
        $data = $redis->zrevrange('tag1', 0, -1);
        $ids = implode(',', $data);
//        $score = $redis->zRevRange('tag1', 0, -1, true);
        // Judge data time ranking 
        if(!empty($time))
        {
            $data = Money::whereTime('add_time',$time)->whereIn('tid', $ids)->order(Db::raw("FIELD(tid,$ids)"))->select()->toArray();

        }else{
            $data = Money::whereIn('tid', $ids)->order(Db::raw("FIELD(tid,$ids)"))->select()->toArray();
        }
        dd($data);
    }