How to set up Nginx and PHP-FPM to handle custom error pages for PHP applications?

To set up Nginx and PHP-FPM to handle custom error pages for PHP applications, follow these steps:

1. Install Nginx and PHP-FPM:

   On Ubuntu, you can use the following commands to install Nginx and PHP-FPM:

   sudo apt update sudo apt install nginx php-fpm

2. Configure Nginx to use PHP-FPM:

   Open the Nginx configuration file in a text editor. On Ubuntu, the file is located at /etc/nginx/sites-available/default.

   Uncomment the server block and update the location ~ \.php$ section to include the following lines:

   location ~ \.php$ { include snippets/fastcgi-php.conf; fastcgi_pass unix:/run/php/php7.4-fpm.sock; }

   Replace php7.4-fpm.sock with the appropriate PHP-FPM socket version installed on your system.

3. Configure Nginx to handle custom error pages:

   Inside the server block, add the following lines to configure Nginx to handle custom error pages:

   error_page 404 /404.php; error_page 500 502 503 504 /50x.php; location = /404.php { root /path/to/your/php/app; internal; } location = /50x.php { root /path/to/your/php/app; internal; }

   Replace /path/to/your/php/app with the actual path to your PHP application's root directory.

4. Create the custom error pages:

   Inside your PHP application's root directory, create the 404.php and 50x.php files with your desired custom error page content.

5. Restart Nginx and PHP-FPM:

   After making the changes, save the Nginx configuration file and restart both Nginx and PHP-FPM using the following commands:

   sudo systemctl restart nginx sudo systemctl restart php7.4-fpm # Replace with the appropriate PHP-FPM version

Now, when a PHP application running on Nginx encounters a 404 error or a 500 series error, Nginx will use the custom error pages you created to handle these errors.