To install Nginx and PHP on your server, follow the instructions based on your operating system:

On Ubuntu/Debian:

Step 1: Install Nginx

1. Update package index:

sudo apt update

2. Install Nginx:

sudo apt install nginx

3. Start Nginx service:

sudo systemctl start nginx

4. Enable Nginx to start on boot:

sudo systemctl enable nginx

5. Check Nginx status:

sudo systemctl status nginx

Step 2: Install PHP

1. Install PHP:

sudo apt install php-fpm

2. Check PHP version:

php -v

On CentOS/RHEL:

Step 1: Install Nginx

1. Install Nginx:

sudo yum install epel-releasesudo yum install nginx

1. Start Nginx service:

sudo systemctl start nginxsudo systemctl enable nginx

Step 2: Install PHP

1. Install PHP:

sudo yum install php php-fpm

2. Start PHP-FPM service:

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

Configure Nginx to Use PHP

1. Edit Nginx configuration for your site (e.g., /etc/nginx/sites-available/default):

sudo nano /etc/nginx/sites-available/default

2. Update the location:
   Update the location ~ \.php$ block with the correct PHP-FPM socket (or port):

   server {
       listen 80;
       server_name your_domain_or_ip;

       root /var/www/html;
       index index.php index.html index.htm;

       location / {
           try_files $uri $uri/ =404;
       }

       location ~ \.php$ {
           include snippets/fastcgi-php.conf;
           fastcgi_pass unix:/var/run/php/php8.3-fpm.sock;  # Ensure this matches the PHP-FPM socket path
           fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
           include fastcgi_params;
       }

       # Other necessary Nginx configuration
   }

3. Test the Nginx configuration:

sudo nginx -t

4. Reload Nginx to apply the changes:

sudo systemctl reload nginx

Verify PHP is Working

• Create a phpinfo() test file to verify PHP is working:

sudo nano /var/www/html/info.php

• Add the following PHP code:

<?php
   phpinfo();
?>

• Visit the test file in your browser:

http://your_server_ip/info.php