What does redis mean in php

In PHP, the full name of redis is Remote Dictionary Server (remote data service). It is a memory cache database. Its data model is "key-value" and supports rich data structures, such as string and list. , hash, etc.; can be persisted to ensure data security.

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

Redis is Remote Dictionary Server (remote data service) The abbreviation of , a memory cache database developed by Italian Antirez (Salvatore Sanfilippo), it is written in C language, its data model is key-value, and supports rich data structures (types), such as string, list, hash , set, sorted sort. It is durable and ensures data security.

Redis is an open source log-type Key-Value database written in ANSI C language, supports network, can be memory-based and persistent, and provides APIs in multiple languages.

One of the main differences between Redis and other key-value databases is Redis's ability to store and manipulate advanced data types. These data types are the basic data structures that most developers are familiar with (lists, maps, sets, and sorted sets). Redis' superior performance, simplicity, and atomic operations on data structures help solve problems that are difficult to implement or perform poorly using traditional relational database implementations.

PHP uses Redis

Installation

Before starting to use Redis in PHP, we need Make sure that the redis service and PHP redis driver have been installed, and PHP can be used normally on your machine. Next, let us install the PHP redis driver: The download address is: https://github.com/phpredis/phpredis/releases.

PHP installation redis extension

The following operations need to be completed in the downloaded phpredis directory:

$ wget https://github.com/phpredis/phpredis/archive/2.2.4.tar.gz
$ cd phpredis-2.2.7                      # 进入 phpredis 目录
$ /usr/local/php/bin/phpize              # php安装后的路径
$ ./configure --with-php-config=/usr/local/php/bin/php-config
$ make && make install

If you are PHP7 version, then Need to download the specified branch:

git clone -b php7 https://github.com/phpredis/phpredis.git

Modify the php.ini file

vi /usr/local/php/lib/php.ini

Add the following content:

extension_dir = "/usr/local/php/lib/php/extensions/no-debug-zts-20090626"extension=redis.so

Restart php after the installation is complete- fpm or apache. Check the phpinfo information and you can see the redis extension.

Connect to redis service

<?php
    //连接本地的 Redis 服务
   $redis = new Redis();
   $redis->connect(&#39;127.0.0.1&#39;, 6379);
   echo "Connection to server sucessfully";
         //查看服务是否运行
   echo "Server is running: " . $redis->ping();
?>

Execute the script, the output result is:

Connection to server sucessfully
Server is running: PONG

---

Redis PHP String (string) Example

<?php
   //连接本地的 Redis 服务
   $redis = new Redis();
   $redis->connect(&#39;127.0.0.1&#39;, 6379);
   echo "Connection to server sucessfully";
   //设置 redis 字符串数据
   $redis->set("tutorial-name", "Redis tutorial");
   // 获取存储的数据并输出
   echo "Stored string in redis:: " . $redis->get("tutorial-name");
?>

Execute the script, the output result is:

Connection to server sucessfully
Stored string in redis:: Redis tutorial

---

Redis PHP List (list) instance

<?php
   //连接本地的 Redis 服务
   $redis = new Redis();
   $redis->connect(&#39;127.0.0.1&#39;, 6379);
   echo "Connection to server sucessfully";
   //存储数据到列表中
   $redis->lpush("tutorial-list", "Redis");
   $redis->lpush("tutorial-list", "Mongodb");
   $redis->lpush("tutorial-list", "Mysql");
   // 获取存储的数据并输出
   $arList = $redis->lrange("tutorial-list", 0 ,5);
   echo "Stored string in redis";
   print_r($arList);
?>

Execute the script, the output result is:

Connection to server sucessfully
Stored string in redis
Redis
Mongodb
Mysql

---

Redis PHP Keys instance

<?php
   //连接本地的 Redis 服务
   $redis = new Redis();
   $redis->connect(&#39;127.0.0.1&#39;, 6379);
   echo "Connection to server sucessfully";
   // 获取数据并输出
   $arList = $redis->keys("*");
   echo "Stored keys in redis:: ";
   print_r($arList);
?>

executes the script, and the output result is:

Connection to server sucessfully
Stored string in redis::
tutorial-name
tutorial-list

Recommended learning: "PHP Video Tutorial"

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