Here is an example of how to set global configuration variables (e.g. title, homepage URL) for the subdomain. 

global $conf;
$conf['site_name']='The title of this domain';
$conf['site_frontpage']='node/244'; // The URL of the page to displayed on the front page of the domain.

The code should go to the 'Initialization code' field of the domain.

My sample multidomain

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druvision’s picture

druvision commented
Title: Readme addon: setting global config vars » Documention addon: setting global config vars

Continued:

My sample multidomain site is http://www.levavie.com.

Note: To fetch the site front page URL in the theme:

            global $conf;
            print '<h1><a href="'. check_url($conf['site_frontpage']) .'" title="'. $site_title .'">';

(The example is taken from the garland theme.

wayland76’s picture

wayland76 commented
Component: interface » documentation
Status: Reviewed & tested by the community » Active

1. No patch is attached
2. It goes under Documentation.