Ubuntu: Setup Apache2, PHP5 and MySQL

Packages to install to run PHP:

sudo apt-get install apache2
sudo apt-get install php5
sudo apt-get install libapache2-mod-php5
sudo service apache2 restart

Some optional / useful php libraries to install:

sudo apt-get install php5-gd
sudo apt-get install php5-curl
sudo apt-get install php5-mysql
sudo service apache2 restart

To install MySQL:

sudo apt-get install mysql-server
sudo service mysql start
sudo apt-get install php5-mysql
sudo service apache2 restart