Are there best practices for ensuring a clean and successful PHP upgrade process on Linux systems?

To ensure a clean and successful PHP upgrade process on Linux systems, it is recommended to backup all important files and databases before proceeding with the upgrade. Additionally, make sure to check for any compatibility issues with existing code and third-party extensions. It is also advisable to follow the official PHP upgrade guide provided by PHP.net for a smooth transition. ```bash # Backup important files and databases sudo cp -r /var/www/html /var/www/html_backup sudo mysqldump -u root -p mydatabase > mydatabase_backup.sql # Check for compatibility issues php -l /path/to/your/php/files # Follow the official PHP upgrade guide https://www.php.net/manual/en/migration70.php ```