Detailed explanation of how to install Redis extension under CentOS system

Detailed explanation of how to install the Redis extension under CentOS system

Redis is a high-performance key-value storage database that is widely used in web development, caching systems and other fields . Installing the Redis extension on the CentOS system can interact with the Redis database more conveniently and improve program performance and efficiency. This article will introduce in detail the steps to install the Redis extension under CentOS system, with specific code examples.

Step 1: Install the Redis service

Before installing the Redis extension, you first need to install the Redis service on the CentOS system. You can install Redis through the Yum package manager and execute the following command:

sudo yum install redis

After the installation is complete, start the Redis service and set it to start automatically at boot:

sudo systemctl start redis
sudo systemctl enable redis

Step 2: Install the PHP Redis extension

Next, we need to install the Redis extension for PHP so that the PHP program can connect to the Redis database. You can install the Redis extension through PECL and execute the following command:

sudo yum install php php-devel php-pear gcc make
sudo pecl install redis

There may be some prompts during the installation process. Just follow the prompts to confirm. After the installation is complete, you need to load the Redis extension in the PHP configuration file. You can add the following configuration by editing the php.ini file:

extension=redis.so

After saving the modifications, restart the PHP-FPM service:

sudo systemctl restart php-fpm

Step 3: Verify installation

In order to verify whether the Redis extension is installed successfully, you can create a test PHP file, such as test_redis.php, with the following content:

<?php
$redis = new Redis();
$redis->connect('127.0.0.1', 6379);
echo "Server is running: " . $redis->ping();
?>

After saving the file, access test_redis through the browser .php file, if the page displays "Server is running: PONG", it means that the Redis extension is successfully installed.

Summary

Through the above steps, we introduced in detail how to install the Redis extension under the CentOS system and provided specific code examples. Installing the Redis extension can improve the performance and efficiency of the program, and is very useful for projects that interact with the Redis database. I hope this article is helpful to you, and I wish you a happy use of Redis extensions!

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