PHP (recursive acronym for PHP: Hypertext Preprocessor) is a widely-used open source general-purpose scripting language that is especially suited for web development and can be embedded into HTML. PHP intro whatis.

Install Nginx and PHP-FPM:

sudo apt update && sudo apt install nginx php-fpm -y

Find PHP socket file:

user@localhost:~$ file /var/run/php/php8.2-fpm.sock
/var/run/php/php8.2-fpm.sock: socket

Create directory for project:

sudo mkdir -p /var/www/your-project

Create "index.php" file in  /var/www/your-project directory:

sudo nano /var/www/your-project/index.html

Now add PHP code in "index.php":

<?php
$command = "echo \"CPU `LC_ALL=C top -bn1 | grep \"Cpu(s)\" | sed \"s/.*, *\([0-9.]*\)%* id.*/\1/\" | awk>
//echo shell_exec($command);
$output = shell_exec($command);
echo $output;
?>

This code get information about CPU, RAM and disk storage.

Change owner and group of "your-project" directory to "www-data":

sudo chown -R www-data:www-data /var/www/your-project/

Configuring Nginx. Create file /etc/nginx/sites-available/your-project file and insert this configs:

server {
    server_name your-project.com;
    listen 80;
    root /var/www/your-project;
    index index.php;
    location / {
        try_files $uri /index.php;
    }
    location ~ \.php$ {
        include snippets/fastcgi-php.conf;
        fastcgi_pass unix:/var/run/php/php8.2-fpm.sock;
    }
}

Close file and save changes.

Create symlink for configuration file:

sudo ln -s /etc/nginx/sites-available/your-project /etc/nginx/sites-enabled

Test new configurations:

sudo nginx -t

Output must be like this:

nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful

Restart Nginx for apply new configurations:

sudo systemctl restart nginx

Allow UFW to accep HTTP requests:

sudo ufw allow 'Nginx Full'

Testing. Enter in browser address of your project: http://your-project.com/