Luckily, this is just down to an apache configuration file being overwritten and is easy to correct...
1. Edit Apache Configuration
sudo vi /private/etc/apache2/httpd.conf
a. Uncomment following line to re-enable virtual hosts: -
Include /private/etc/apache2/extra/httpd-vhosts.conf
b. Uncomment following line to re-enable PHP: -
LoadModule php5_module libexec/apache2/libphp5.so
2. Restart Apache
sudo apachectl restart
There was no need to change any of my MySQL installation, this continued working after the installation.
