I've installed PHP 5.6 on my Raspberry Pi (from the Jessie repo), as well as Apache2. When I access http://192.168.2.50/ (the Pi's IP-address) it's not serving the
service apache2 stop
service apache2 start
The requested URL / was not found on this server.
Apache/2.4.10 (Raspbian) Server at 192.168.2.50 Port 80
This was an easy 'fix'. The new PHP's root folder is
~/var/www/html/. All is working fine. Good luck future solution seekers ;)