Why is my php not working?

Question

I followed all the instructions to get php to work and wrote a basic "Hello World" program.

This is what's written in the file:

<?php
echo "Hello World";
?>

And this is what appears when I open it with chrome:

<?php
echo "Hello World";
?>

I think it's pretty clear why I don't think this is working... Please help me!

EDIT

So I decided to try and uninstall xampp and instead use wampserver and that seems to have worked.

Answer 1

Always remember the extension of php, should be in .php like index.php, home.php. You are using . html extension that's why it's happening. Note: if you are running php you need a localhost server use xamp or wamp and start apache.

Answer 2

I have restarted apache nd even tried reinstalling xampp and still nothing works.
Also no, I have not been using the .html extension, I used .php