How to configure apache2.2 .x and php5.x?

As a newbie to PHP, I was trying to run a simple php file which I wrote on web browser. But it was displaying the php script contents instead of executing it. Then I found the need to configure php interpreter to Apache. Here is the link which explains very well about configuring apache & php
http://www.thesitewizard.com/php/install-php-5-apache-windows.shtml

In simple, we need to copy php.ini-recommended file as php.ini inside php directory and after that modify httpd.conf file as described in link and then restart Apache.