redis_简单秒杀_watch事务

简单秒杀

<?php

header("content-type:text/html;charset=utf-8");  

$redis = new redis();  

$result = $redis->connect('127.0.0.1', 6379);

$watchkey = $redis->get("watchkey");  

$rob_total = 10;

if($watchkey<$rob_total){  

    $redis->watch("watchkey");  

    $redis->multi();   

    $redis->hSet("watchlist","user_id_".mt_rand(1, 9999),time());  

    $redis->incr("watchkey");

    $rob_result = $redis->exec();  

    if($rob_result){  

        $watchlist = $redis->hGetAll("watchlist");  

        echo "抢购成功！<br/>";  

        echo "剩余数量：".($rob_total-$watchkey-1)."<br/>";  

        echo "用户列表：<pre>";  

        var_dump($watchlist);  

    }else{  

        echo "手气不好，再抢购！";

    }  

}else{

echo "已被抢购完!";

}