Install PHP 8.1 for Nginx on Debian 11
How to install PHP 8.1 for Nginx web server on Debian 11
Add repository for PHP
curl -sSL https://packages.sury.org/php/README.txt | sudo bash -x sudo apt update
Install PHP 8.1
apt install php8.1
Check php version
php -v
List installed php modules
dpkg -l | grep php8
Install PHP FastCGI and PHP MySQL
apt install php-fpm php-mysql
Install PHP extensions
In this example, we are installing Joomla 4 which requires these PHP extensions
apt install php8.1-zip php8.1-intl php8.1-xml php8.1-curl php8.1-mbstring php8.1-gd
Find php.ini configuration file
php -i | grep "Loaded Configuration File"
Enable PHP extensions
Edit php.ini and uncomment these lines to enable the extensions
nano /etc/php/8.1/fpm/php.ini
extension=curl
extension=gd
extension=mbstring
extension=mysqli
extension=openssl
Restart PHP FPM
service php8.1-fpm restart
Restart Nginx
service nginx restart
Add PHP to Nginx Server block
Edit Nginx server block
nano /etc/nginx/sites-available/yourdomain.com.conf
On most servers; this is usually fastcgi_pass 127.0.0.1:9000
# php config location ~ \.php$ { try_files $uri =404; fastcgi_split_path_info ^(.+\.php)(/.+)$; fastcgi_pass 127.0.0.1:9000; # fastcgi_pass unix:/var/run/php/php8.1-fpm.sock; fastcgi_index index.php; include fastcgi_params; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; include /etc/nginx/fastcgi.conf; }
Test Nginx configuration
nginx -t
Reload Nginx
service nginx reload
References:
by Author
deb.sury.org - Frequently Asked Questions
https://github.com/oerdnj/deb.sury.org/wiki/Frequently-Asked-Questions
Nginx PHP FastCGI Example
https://www.nginx.com/resources/wiki/start/topics/examples/phpfcgi
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