Choosing the right PHP version for your website is one of the most impactful performance and security decisions you can make. cPanel makes switching between PHP versions straightforward, but understanding when and why to upgrade — and how to handle compatibility issues — requires more than just clicking a dropdown menu. Whether you are running a legacy WordPress site on PHP 7.4 or deploying a modern Laravel application that needs PHP 8.3, this guide covers every step of the process from start to finish.