If you already have XAMPP and only want to switch the PHP version: XAMPP - Browse /XAMPP Windows/7.1.33 at SourceForge.net
: Best for a fresh, full installation.
If you do not have XAMPP installed or don't mind a clean start: download php 7.1 for xampp
: Best if you want to run it without a formal installation or keep it separate from other XAMPP versions. Method 1: Fresh Installation (Recommended) If you already have XAMPP and only want