Mapping from controller ID to controller configurations.
Each name-value pair specifies the configuration for a single controller.
A controller configuration can be either a string or an array.
If the former, the string should be the class name or
{@link YiiBase::getPathOfAlias class path alias} of the controller.
If the latter, the array must contain a 'class' element which specifies
the controller's class name or {@link YiiBase::getPathOfAlias class path alias}.
The rest name-value pairs in the array are used to initialize
the corresponding controller properties. For example,
array(
'post'=>array(
'class'=>'path.to.PostController',
'pageTitle'=>'something new',
),
'user'=>'path.to.UserController',,
)
Note, when processing an incoming request, the controller map will first be
checked to see if the request can be handled by one of the controllers in the map.
If not, a controller will be searched for under the {@link getControllerPath default controller path}.