If you need the perfect/faultless functionality of your website then PHP version should be correct. If you will select exact PHP version it will not hamper the functionality of your website and your website will run smoothly.
Step1: Login to cPanel with your email address and password.
Step 2: After login you need to enter” PHP” in search bar. Here you will get many options, please select “Multi PHP Manager” and enter.
Step 3: Here in “MultiPHP Manager” you will get a tab of “PHP Version”. If you will click on the arrow you will see a dropdown list of PHP versions. Please select the required/ desired version and click apply.
By following these steps you can change the PHP version for your website.