How does codeigniter 2 handle classes and objects

Question

I'm new to CodeIgniter, and I was wondering how the system handles all classes and objects. If i have a lot of models, views and controllers does the system release them, when not in use or do i have to do it myself?

an example:

class Myclass extends CI_Controller {

 public function __construct(){
      parent::_construct();
 }

 public function some_function(){
    $this->load->view("some_view");
 }

}

I also got a question on the database part. Does CodeIgniter save query results, or do I have to release every query, I don't want to be saved with $query->free_result() ?

Answer 1

Active records does it automatically. for more details please check http://codeigniter.com/user_guide/database/results.html

And just to inform you that codeigniter has its own fantastic documentation for his core library. So, if you follow their guidlines then you will be codeigniter geek.