Detailed tutorial on installing Opcache with PHP under CentOS

Detailed Tutorial on Installing Opcache in PHP under CentOS

In the web development process, performance optimization is a crucial part, and excellent caching tools are the key to improving website performance an effective way. In PHP development, Opcache is a very popular PHP code caching tool that can significantly improve the performance of PHP applications. This article will introduce in detail how to install and configure PHP Opcache on CentOS systems to improve website performance and response speed.

Step 1: Install PHP

First, make sure PHP is installed on the CentOS system. You can use the following command to view the PHP version installed in the system:

php -v

If PHP is not installed, you can use the following command to install it:

yum install php

Step 2: Install the Opcache extension

1. In the CentOS system, you can install the Opcache extension through the yum tool:

yum install php-opcache

2. After the installation is complete, you need to edit the PHP configuration file php.ini and add The following content enables the Opcache extension:

[opcache]
zend_extension=opcache.so
opcache.enable=1
opcache.enable_cli=1
opcache.memory_consumption=128
opcache.interned_strings_buffer=8
opcache.max_accelerated_files=10000
opcache.revalidate_freq=2
opcache.fast_shutdown=1
opcache.enable_file_override=1
opcache.save_comments=0

3. After editing, save and exit the editor, and restart the Apache server to apply the new configuration.

systemctl restart httpd

Step 3: Verify whether Opcache is installed successfully

You can create a phpinfo.php file containing the following content:

<?php
phpinfo();
?>

Put This file is placed in the root directory of the website and accessed in the browser. You can search for the "OPcache" keyword in the output information to verify whether Opcache has been successfully installed and enabled.

Step 4: Optimize the configuration

In addition to the basic configuration, you can also optimize the Opcache configuration parameters according to the actual situation to further improve performance. Parameters such as memory consumption and the number of cached files can be adjusted according to actual needs to adapt Opcache to the characteristics and needs of the current application.

Summary

Through the above steps, you can successfully install and configure the PHP Opcache extension on your CentOS system, thereby significantly improving the performance and response speed of your PHP applications. Remember to conduct adequate testing before making configuration changes to your production environment to ensure that the new configuration will not have a negative impact on the system. I hope this article is helpful to you, and I wish you good luck with your website performance optimization!

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