How to setup multi site that will use sub domains in the live server/web server like bluehost

[eluser]rei[/eluser]
I have setup a multisite w/c consists of 3 sites. I can access them using this links:

http://localhost/MultiSiteCI/application_site1/

http://localhost/MultiSiteCI/application_site2/

http://localhost/MultiSiteCI/application_site3/

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My question is, how can I make the url to be like this:

application_site1 - main site

application_site2.application_site1 - sub site

application_site3.application_site1 - another sub site


a more real world example of the url would be:

facebook.com - main site
blog.facebook.com - sub site
apps.facebook.com - another sub site

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Can someone please teach me how can I do that in the live server/web server like bluehost?

Thanks in advance

[eluser]cotsweb[/eluser]
You should be able to use Cpanel to set up subdomains (I don't use Bluehost but I believe they offer cpanel).

Code:

application_site1 - main site

application_site2.application_site1 - sub site

application_site3.application_site1 - another sub site

The subdomains for application_site2 and application_site3 will point to subdirectories under the main site.
application_site2.application_site1 and application_site1/application_site2 will point to the same place but having the subdomain set up means that vistors will be able to go directly to where you want them.

Hope this helps

[eluser]rei[/eluser]
Thank you so much! It makes sense now. But when I go to my subdomain - http://www.app2.makingfriends.elementfx.com/

It says - Directory access is forbidden.

How can I fix that? hmmm.

[eluser]cotsweb[/eluser]
Do you have a .htaccess file which is restricting access?
Either in the sub-directory being accessed or in the site root (which would apply to sub-directories)

[eluser]rei[/eluser]
At first I have a .htaccess file in the sub directory which my sub domain points to. I removed it because it is denying access when I'm on my localhost. After removing it, it worked then I uploaded the site to a web host and created a subdomain. When I'm on the main site it works and if I set the sub domain as the default app in the CI root index.php ( $application_folder = '../app2'; ) it works. But if I set the main site to be the default app, when I access the sub domain it dont work. It always says Directory access is forbidden.

[eluser]rei[/eluser]
I tried uploading the multi site to another web host. It worked! The problem is in the 1st web host where I uploaded the multi site. Maybe some permission issues or something but I set the permissions to 777. Dont know whats causing the problem. Maybe ill just send a support ticket in that web host. Nwei thanks for your help