PHP not interpreted, showing in view source

Question

I\'m hoping that this will be a useful page for getting started running php code as well as solve the current problem I\'m having some very simple code as follows:

Answer 1

In my case I had the /var/www/ folder with wrong permissions.

I had to run:

sudo chown -R www-data /var/www/
sudo chgrp -R www-data /var/www/