Installing PHP5

Assuming that you already have apache2 installed, the next step is to install PHP5. It is recommended that you install phpmyadmin and mysql as well.
1) Start by selecting and installing your modules through the synaptic package manager.
OR by command line
sudo apt-get install php5 mysql phpmyadmin
*please install PHP5.gd is you intend to use drupal
2) To enable PHP5, sudo a2enmod PHP5 and restart apache2
3) Test whether php pages are parsed by entering http://localhost/ and click on phpadmin
4) If cannot access that page (greeted by save php or phtml page as) , then you need to edit /etc/apache2/apache2.conf
look for the line AddType ****
and add in "AddType application/x-httpd-php .php .phtml"
5) Restart apache2 and you should be able to access the phpmyadmin page