I have installed php 5.5 in ubuntu 14.04 but is not executing in the server. All the php code is showing in the browser. I really appreciate if any one will help me.
sudo apt-get install apache2 php5 libapache2-mod-php5
will install everything you need and will start the apache server with support for PHP.
To verify that the php module is loaded, type:
a2query -m php5
if not enabled, then load with:
sudo a2enmod php5
and restart apache:
sudo service apache2 restart
Note :- Even if it is not working than read carefully the errors in the terminal and install all the dependecy packages.