php redis实现文章发布系统（用户投票系统）

本文实例为大家分享了php实现文章发布系统、用户投票系统的具体代码，供大家参考，具体内容如下

  public function post_article($user){
    $VOTE_SCORE = 24;
    $redis = $this -> redis;
    $key= "queue";
    $ONE_WEEK_IN_SEConDS= 7*86400;
    $redis -> multi($key);
    //生成新的文章id
    $article_id = $redis -> incr("article:",$key);

    //文章已投票用户名单
    $voted = "voted:".$article_id;
    $this->redis->sadd($voted,$user,$key);
    //设置过期时间(为1周)
    $this->redis->expipre($voted,$ONE_WEEK_IN_SECONDS,$key);

    //获取现在的时间
    $now =time();
    $article = "article:".$article_id;
    $data = ['title'=>'测试1','link'=>'www.hahaha.com','poster'=>$user,'tine'=>$now,'votes'=>1];
    //$data = json_encode($data);
    $redis -> hmset($article,$data,$key);

    //将文章添加到根据时间排序有序集合和根据评分排序有序结合中
    $this -> redis -> zadd("score:",1,$article,$key);
    $this -> redis -> zadd("time:",$now,$article,$key);

    $redis -> exec($key);
  }

  public function article_vote(){
    $ONE_WEEK_IN_SEConDS= 7*86400;
    $article = "article:3";
    $user = "user:7777";

    $redis = $this -> redis;
    $key= "queue";
    $cutoff = time() - $ONE_WEEK_IN_SECONDS;
    //文章发布时间和投票截止日期对比
    if($redis->zscore('time:',$article,$key) < $cutoff){
      var_dump("该文章已过投票时间!");exit;
    }
    $article_id = explode(':',$article)['1'];
    if($redis->sadd('voted:'.$article_id,$user,$key)){
      $redis -> zincrby('score:',$article,1,$key);
      $redis -> hincrby($article,'votes',1,$key);
    }else{
      var_dump("您已经投过票了!");exit;
    }
  }

  public function get_articles($page =1,$orders =''){
    $redis = $this->redis;
    $db = "queue";
    //$orders = "time:";
    $per_page = 3;
    $start = ($page-1)*$per_page;
    $end = $start + $per_page -1;
    $ids = $redis -> zrevrange($orders,$start,$end,$db);
    foreach($ids as $key=>$val){
      $data = $redis -> hgetall($val,$db);
      $data['id'] = $val;
      $articles[] = $data;
    }
    return $articles;
  }

  public function add_remove_group($article_id,$to_add = [],$to_remove = []){
    $redis = $this->redis;
    $db = "queue";
    $article = "article:".$article_id;
    foreach($to_add as $key=>$val){
      $redis -> sadd('group:'.$val,$article,$db);
    }
    foreach($to_remove as $key=>$val){
      $redis -> srem('grouo:'.$val,$article,$db);
    }
  }

  public function get_grouop_articles($orders = "time:"){
    $redis = $this -> redis;
    $db = "queue";
    $group = '开发';
    $key = $orders.$group;
    if($redis -> exists($key,$db)){
      $argument = 2;
      $data = $redis -> zinterstore($key,$argument,['group:'.$group,$orders],$db);
      //$this -> expire($key,60,$db);
    }
    return $this->get_articles(2,$key);
  }

采用php+redis，简易的实现文章发布系统，用户投票，文章分组，分页排序。

    redis是一个高性能的key-value存储系统，最为常见的5大类型：string(字符串)、list(链表)、set(集合)、zset(sorted set --有序集合)和hash（哈希类型），和memcache区别的是redis会周期性的把更新的数据写入磁盘或者把修改操作写入追加的记录文件，并且在此基础上实现了master-slave(主从)同步。

    最近越来越喜欢用上redis，有情投意合者一起多多交流呀。

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持考高分网。