Install apache,php in Terminal

Installing apache
          
                            Open Terminal. To open terminal click the Dash home from unity launcher. And type terminal in the search field.And click Terminal .(or) shortcut key Ctrl+Alt+T
Type this,

sudo apt-get install apache2

Type your password and enter,
Do you want to continue[y/n]? y
type 'y' and press enter..

After the successful installation  , open your browser

http://localhost/

Installing PHP

 sudo apt-get install php5 libapache2-mod-php5

Type your ubuntu password if needed.
Do you want to continue [y/n]? y
Type y and hit enter to confirm PHP installation.
After the successful installation restart Apache using the below code

sudo /etc/init.d/apache2 restart

Test PHP installation
To test PHP is installed, Type

sudo gedit /var/www/phpinfo.php

     in the terminal and type your ubuntu password if needed. It will open the phpinfo.php file in gedit.Type below code in the phpinfo.php file, save and exit it .

<?php phpinfo() ?>

Now open your favorite browser and type http://localhost/phpinfo.php in the address bar and press enter. If you will see the below page , then your php works fine.