What steps should be taken to ensure a successful PHP update on the mentioned system configuration?

To ensure a successful PHP update on the mentioned system configuration, you should first make sure to backup all your files and databases. Then, you should check the compatibility of your current code with the new PHP version and make any necessary updates. Finally, you can update PHP by following the official documentation or using a package manager like apt or yum.

// Example PHP code snippet for updating PHP version using apt package manager on Ubuntu
sudo apt update
sudo apt upgrade php