$uses=null vs. $uses=array matters
In daniel hoffster’s blog, he pointed out the difference of behavior when setting your $uses variable in your controllers to null against array().
If you try to do the same thing as daniel reported, you will encounter a PHP notice that says Notice: Undefined property: myController::$model .
klevo said,
October 31, 2007 @ 9:15 am
Very good find. Notices are often overlooked.