A brief analysis of how to install php5.6 and php-fpm on Linux

In today's Internet era, the Linux operating system is one of the most popular operating systems, and PHP is one of the most popular Web development languages. PHP-FPM is an improved version of PHP FastCGI, which can provide faster PHP execution speed, thereby improving the performance of web applications. Therefore, it is very important to install PHP 5.6 and its related components and extensions on Linux systems. This article will introduce the process of installing PHP 5.6 and PHP-FPM.

Prerequisites

Before installing PHP 5.6 and PHP-FPM, you need to ensure that LAMP (i.e. Linux, Apache, MySQL and PHP) is installed in the operating system or LEMP (i.e. Linux, Nginx, MySQL and PHP) stack. If this stack is not installed yet, we need to install them first.

Install PHP 5.6 and PHP-FPM

Once we have fulfilled the prerequisites, we can follow the steps below to install PHP 5.6 and PHP-FPM on the Linux system:

1. Add Webtatic repository

We need to add Webtatic repository to our system in order to get the required packages when installing PHP 5.6. Run the following command to add the Webtatic repository to our system:

sudo rpm -Uvh https://mirror.webtatic.com/yum/el7/webtatic-release.rpm

2. Install PHP 5.6 and its related components and extensions

Run the following command to install PHP 5.6 and its related components and Extension:

sudo yum install php56w php56w-opcache php56w-fpm php56w-mcrypt php56w-mbstring php56w-pdo php56w-mysql

3. Configure PHP-FPM

Before continuing, we need to configure PHP-FPM in order to manage the PHP process. We need to edit the php-fpm.conf file:

sudo vi /etc/php-fpm.conf

Find the following two lines and uncomment them:

pid = /run/php-fpm/php-fpm.pid
error_log = /var/log/php-fpm/error.log

Add the following lines to the last line to prevent PHP-FPM from creating too many orphan processes :

...
emergency_restart_threshold = 10
emergency_restart_interval = 1m
process_control_timeout = 10s
...

Save and close the file.

4. Start PHP-FPM

Run the following command to start the PHP-FPM service and set it to start automatically when the system starts:

sudo systemctl start php-fpm
sudo systemctl enable php-fpm

5. Test PHP -FPM

After successfully installing and configuring PHP 5.6 and PHP-FPM, we need to test whether PHP-FPM is working properly. We can test whether it is working properly by creating a phpinfo.php file and then accessing the file in a web browser.

Create the phpinfo.php file on the web server's default root directory (/var/www/html):

sudo vi /var/www/html/phpinfo.php

Add the following lines:

<?php phpinfo(); ?>

Save and close the file .

Visit the following URL in a web browser to check if PHP is working properly:

http://your_server_ip/phpinfo.php

Summary

Through this article, we have learned How to install PHP 5.6 and PHP-FPM on Linux systems. Installing PHP 5.6 and PHP-FPM can greatly improve the performance of your web applications. If you are a web developer, I believe this article clarifies how to install PHP 5.6 and PHP-FPM on Linux systems.

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