Redis简单实例

<?php
/**
 * Created by PhpStorm.
 * User: Perilla
 * Date: 2018/4/27
 * Time: 9:13
 */

namespace app\index\controller;

/**
 * Class Reids
 * 作用：学习redis
 * 时间：2018年4月27日15:07:28
 * （基础已迁移到extend/Reids）
 *
 *
 * 队列的rPop是具有原子性的，即使处理并发，也是一个个处理，不会出现重复和超卖的情况
 * Set的特性是不能重复
 * 用户抢购队列（List）
 * 商品队列（List）
 * 订单信息（Hash集合）
 * 购买成功用户（Set集合）
 */
class Reids{
    private $reids;

    /**
     * 初始化一个reids
     */
    public function __construct(\Redis $reids){
        header("content-type:text/html;charset=utf-8");
        $this->reids = $reids;
        $this->reids->connect('127.0.0.1',6379);
        if($this->reids->ping() == "+PONG"){
            echo "reids 正常运行<br/>".PHP_EOL;
        }else{
            echo "reids 开启失败<br/>".PHP_EOL;
        }
    }

    /**
     * 创建一个货物库  货物n个
     */
    public function goods($n){
    	$this->reids->delete('goodsLists');
        $this->reids->delete('killsLists');
        $this->reids->delete('ordersLists');
        $this->reids->delete('usersLists');
        for($i = 1;$i<=$n;$i++){
            $this->reids->lpush('goodsLists',$i);
        }
        echo '进货成功,商品数：'.$this->reids->lsize('goodsLists');
    }
    public function getkillsLists(){
        $count = $this->reids->scard('killsLists');
        $this->dumps("购买数量",$count);

        $arr = $this->reids->smembers('killsLists');
        $this->dumps("购买清单",$arr);


        $length = $this->reids->lsize('goodsLists');
        $this->dumps("商品剩余数量：",$length);


        $arr = $this->reids->hgetall('ordersLists');
        $this->dumps("商品购买详情：",$arr);

    }

    /**
     * 秒杀过程
     * usersLists  用户表（List）
     * goodsLists  货物表（List）
     * killsLists  秒杀成功表（Set集合）
     * ordersLists 订单表（Hash集合）
     */
    public function kills(){
        //查询库存
        if($this->reids->lLen('goodsLists') == 0) {
            $this->dumps("商品已售完...");
            exit;
        }
        //查询是否购买过
        $uid = rand(100000,999999);
        if($this->reids->sIsMember('killsLists',$uid)){
            $this->dumps('你已经购买过了!');
            exit;
        }
        //购买
        $goods_id = $this->reids->rpop('goodsLists');
        if($goods_id){
            $this->reids->sAdd('killsLists',$uid);
            $value = array(
                'uid'        =>  $uid,
                'goods_id'   =>  $goods_id,
                'time'       =>  time(),
            );
            $this->reids->hSet('ordersLists',$uid,json_encode($value));
            $this->dumps('购买成功。');
        }


    }


    /**
     * 按一定规律打印一些数据
     */
    public function dumps($demo,$val = ""){
        echo $demo.PHP_EOL;
        if($val){
            dump($val);
        }
        echo PHP_EOL;
    }
}