Wsrtjtyk

My Directory structure is

app
- index.php
home
- index.php
index.php


I want users to view home/index.php every time they visit http://example.com but I want users to access http://example.com also if they navigate using the navigation also.

My question is, can I configure apache to make website default homepage other than the root directory. I don't mind if users get redirected to home/index.php first time.

Sure you can. Just setup a vhost to have a DocumentRoot statement pointing to whatever you want your root directory to be.
For example:

<VirtualHost *:80>

  ServerName example.com

  DocumentRoot "/var/www/my_site/home"

</VirtualHost>

But note that after this, whatever will be updir from the DocumentRoot path, will be outside the reach of Apache. You can however include files updir using require/include functions from PHP.

You may also want to have a Directory statement for specifying access rights to that dir. An example of that can be:

<VirtualHost *:80>

  ServerName example.com

  DocumentRoot "/var/www/my_site/home"



  <Directory "/var/www/my_site/home">

    Options Indexes FollowSymLinks

    AllowOverride All

    Order allow,deny

    allow from all

  </Directory>



</VirtualHost>

Also don't forget to restart Apache after any change made in the vhost config file.