Special files

• horde/lib/core.php: This file
  • sets some required PHP configuration settings
  • loads libraries required by all Horde applications
  • instantiates the global Browser object

There are several files with a special meaning that can be found in every Horde application:

• index.php: This script is loaded if a user enters an application. Usually this script doesn't have any functionality but simple loads the default view of the application, sometimes depending on the user's preferences.
• lib/base.php: This file is loaded from every script of the application. Its purpose is to:
  • define some global constants
  • load core.php
  • initialize the Registry
  • redirect to the login screen if the user is not authenticated and guest access is disabled
  • load common Horde libraries
  • initialize the Notification System
  • load common application specific libraries
  • initialize common global application specific objects and variables
  • start output compression
• lib/api.php: This files defines and implements all methods that an application is exposing through the Registry to the other Horde applications and the Horde RPC servers.
• lib/version.php: This files defines a single constant: the application's version number.
• templates/common-header.inc: This is the common page header template for all scripts of the application. All applications use the same page footer template horde/templates/common-footer.inc.
• themes/screen.css: This is a CSS file that defines all application specific style sheet rules.