Are there any best practices for updating PHP versions on a server with Apache2?

When updating PHP versions on a server with Apache2, it is important to ensure compatibility with existing code and configurations. Best practices include testing the new PHP version in a development environment before updating the production server, backing up all files and databases, and updating any necessary PHP extensions or modules. ```bash # Update PHP version on Ubuntu server with Apache2 sudo add-apt-repository ppa:ondrej/php sudo apt-get update sudo apt-get install php7.4 sudo a2dismod php7.2 sudo a2enmod php7.4 sudo service apache2 restart ```