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This enables us
to modify the output before sending it; for example, we can add a link to a JavaScript
file in the document header at almost any point during the application lifetime.
Getting Started
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The application object is always stored in the $mainframe variable. The application
object is a global variable, which can be accessed from within functions and methods
by declaring $mainframe global:
/**
* Pass-through method to check for admin application.
*
* @access public
* @return boolean True if application is JAdministrator
*/
function isAdmin()
{
global $mainframe;
return $mainframe->isAdmin();
}
Unlike the application, to access the global document object we use the static
JFactory::getInstance() method:
$document =& JFactory::getDocument();
Note that we use the =& assignment operator to retrieve the document.
This ensures that we get a reference to the global document object and
that we do not create a copy of the object.
Request to Response
Frontend and backend requests are placed with the root index.


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