How to Install PHP 8.2 for Nginx on CentOS Stream 9

To install PHP 8.2 for Nginx on CentOS Stream 9, follow the detailed steps below.

Step 1 : Begin by updating your system to ensure you have the latest packages and dependencies.

sudo dnf update

Step 2 : Install the Remi repository, which provides up-to-date PHP packages.

sudo dnf install https://rpms.remirepo.net/enterprise/remi-release-9.rpm

Step 3 : Check the available PHP modules to ensure compatibility with your system.

sudo dnf module list php

Step 4 : Enable the PHP Remi repository for PHP 8.2.

sudo dnf module enable php:remi-8.2

Step 5 : Install the PHP 8.2 core package.

sudo dnf install php

Step 6 : Install essential PHP extensions commonly used in web applications.

sudo dnf install -y php-{fpm,mysqlnd,curl,gd,mcrypt,json,pear,common,xml,zip,devel,xsl,soap,bcmath,mbstring,gettext,imagick}

Explanation:

- php-fpm: PHP FastCGI Process Manager.

- php-cli: Command-line interface for PHP.

- php-mysqlnd: MySQL Native Driver.

- php-curl: cURL support for PHP.

- php-gd: GD Graphics Library for PHP.

- php-mcrypt: Mcrypt library for PHP (deprecated in PHP 7.2 and higher).

- php-json: JSON support for PHP.

- php-pear: Package and dependency management framework for PHP.

- php-common: Common files for PHP.

- php-xml: XML support for PHP.

- php-zip: ZIP support for PHP.

- php-devel: PHP development package for compiling additional extensions.

- php-xsl: XSL support for PHP.

- php-soap: SOAP support for PHP.

- php-bcmath: Bcmath support for PHP.

- php-mbstring: Mbstring support for PHP.

- php-gettext: Gettext support for PHP.

- php-imagick: Imagick support for PHP.

Step 7 : Edit the www.conf file to configure PHP-FPM to use the Nginx user and group.

sudo nano /etc/php-fpm.d/www.conf
# Change user and group to 'nginx'

Step 8 : Enable PHP-FPM to start on boot and start the service.

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

Step 9 : Confirm the installed PHP version.

php -v

Step 10 : Set up Nginx configuration to process PHP files for your domain.

server {
    listen 80;
    server_name example.com;

    location / {
        root /usr/share/nginx/html;
        index index.php index.html index.htm;
    }

    location ~ \.php$ {
        fastcgi_pass unix:/var/run/php-fpm/www.sock;
        fastcgi_index index.php;
        include fastcgi_params;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
    }
}

Step 11 : Test Nginx Configuration

sudo nginx -t

Step 12 : Restart Nginx to apply the new configuration.

sudo systemctl restart nginx

Step 13 : Create a simple PHP file for testing purposes.

sudo echo "<?php phpinfo(); ?>" > /usr/share/nginx/html/info.php

Step 14 : Visit your domain to view the PHP info

Congratulations! You have successfully installed PHP 8.2 for Nginx on CentOS Stream 9.