Home  >  Article  >  Backend Development  >  How to implement flash sale function in PHP mall

How to implement flash sale function in PHP mall

藏色散人
藏色散人Original
2022-10-18 10:34:151847browse

How to implement the flash sale function of php mall: 1. Open the php file and connect to the redis database; 2. Create a list of products to be snapped up; 3. Simulate user requests and set up to randomly obtain 10 users to indicate successful snapping up; 4. Determine whether the user already exists in the snap-up list and obtain all the data in the list; 5. Save the snap-up users in redis to the database.

How to implement flash sale function in PHP mall

The operating environment of this tutorial: windows7 system, PHP8.1 version, DELL G3 computer

php redis implements the flash sale function, which can Relieve the pressure of instantaneous concurrency on mysql

## Scenario: At a certain point in time, the goods_id of the product =2 products for rush purchase, the product inventory is 10

## Create product goods_id =2 inventory snap-up list

##First create a list of items to be snapped up , if someone succeeds in snapping up, one will be removed until the list is empty, which means the snapping up is completed.

//1、连接redis数据库
$redis = new Redis();
$redis->connect('127.0.0.1', 6379);
$redis_name = 'goods_id_2';//比如商品id=2的商品参与秒杀
//2、模拟抢购,库存为10,将库存放到redis中
$num = 10;
for($i=0;$i<$num;$i++){
$redis->lPush($redis_name,1);//这里用某个商品的ID作为标识
}
echo "执行成功";

How to implement flash sale function in PHP mall
##Client carries out simulated rush buying
//1、连接redis数据库
$redis = new Redis();
$redis->connect(&#39;127.0.0.1&#39;, 6379);
$redis_name = &#39;goods_id_2&#39;;//比如商品id=2的商品参与秒杀
//3、模拟用户请求,随机获取10名用户表示抢购成功
for($i=0;$i<100;$i++){
$user_id = rand(100,999);
$len = $redis->lLen($redis_name);
$str = "";
if(!$len || $len<=0){
$str .= $user_id."抢购已结束";
break;
}else{
$redis_user_name = "goods_id_2_user_id";
//判断抢购列表中是否已存在该用户,获取列表中所有的数据
$skill_list = $redis->lrange($redis_user_name, 0, -1);
if(in_array($user_id, $skill_list)){
$str .= $user_id."请勿重复提交";
}else{
$redis->rPop($redis_name);
$redis->lPush($redis_user_name,$user_id."_".ceil(microtime(true)*1000));
$str .= $user_id."已抢到";
}
}
file_put_contents("D:/wwwroot/test/skill/cron.txt", $str."\r\n",FILE_APPEND);
}
echo &#39;执行完成&#39;;

How to implement flash sale function in PHP mall
The server performs queue processing and saves the users who have snapped up in redis to the database
<?php
$mysql_server_name = &#39;localhost&#39;; //改成自己的mysql数据库服务器
$mysql_username = &#39;root&#39;; //改成自己的mysql数据库用户名
$mysql_password = &#39;123456&#39;; //改成自己的mysql数据库密码
$mysql_database = &#39;test&#39;; //改成自己的mysql数据库名
$conn=mysqli_connect($mysql_server_name,$mysql_username,$mysql_password,$mysql_database); //连接数据库
//连接数据库错误提示
if (mysqli_connect_errno($conn)) {
die("连接 MySQL 失败: " . mysqli_connect_error());
}
mysqli_query($conn,"set names utf8"); //数据库编码格式
//1、连接redis数据库
$redis = new Redis();
$redis->connect(&#39;127.0.0.1&#39;, 6379);
$redis_name = &#39;goods_id_2&#39;;//比如商品id=2的商品参与秒杀
//2、将list队列中的数据读取出来然后执行入库
$redis_user_name = "goods_id_2_user_id";
while(true){
//判断抢购列表中是否已存在该用户,获取列表中所有的数据
$result = $redis->rpop($redis_user_name);
if($result){
$skill_arr = array_filter(explode("_", $result));
$sql = "insert into skill (user_id,timestamp) values({$skill_arr[0]},{$skill_arr[1]})";
mysqli_query($conn,$sql); 
}
}
echo "执行成功";

How to implement flash sale function in PHP mall
## The above is a simple scenario for realizing flash sales. The specific code must be based on the actual situation. logic to adjust. Recommended learning: "PHP Video Tutorial

"

The above is the detailed content of How to implement flash sale function in PHP mall. For more information, please follow other related articles on the PHP Chinese website!

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn