How to enable php with apache on linux?

Purpose : Enable php engine in apache
OS Environement : Linux [RHEL, Centos]
Application : php, apache httpd
Prerequisites : Make sure php is installed in the system first.
Implementation Steps : 

1. Locate libphp5.so

In most of cases, libphp5.so will be present inside /etc/httpd/modules

2. Add following in httpd.conf :

# Use for PHP 5.x:
LoadModule php5_module modules/libphp5.so
AddHandler php5-script .php

# Add index.php to your DirectoryIndex line:
DirectoryIndex index.html index.php

AddType text/html .php

# PHP Syntax Coloring
# (optional but useful for reading PHP source for debugging):

AddType application/x-httpd-php-source phps

3. Restart apache web server :

$ /etc/init.d/httpd restart

4. Verification :

$ httpd -t|grep -i php

5. Create a php file inside web directory. Put the following content in that file like :

vi info.php


phpinfo();
?>

6. Access the file through browser like http://localhost/info.php. If it shows all the enables php directives or modules then php works fine.