How to move xampp PHP from 5 to 7 ( Latest php ) ?

Basically, XAMPP built for specific PHP version to ensure all supported library work correctly.
So the best method to move PHP from 5 to 7 is download latest XAMPP, use given the link

Download XAMPP

The same method is applicable to the following versions

Downgrade PHP 5.5 to 5.3

Upgrade 5.6.40 to 7.1.26

Upgrade 5.6.40 to 7.2.14

Upgrade 5.6.40 to 7.3.1