Question

If I want to set a variable that my whole controller can access, how do I do it?

Right now, in every function I am setting

$id = $this->session->userdata('id');

I’d like to be able to access $id from any function w/o defining it for each controller. 🙂

If there’s a better way, I’m all ears! I’m a noob!

Answer 1

To elaborate on Koo5’s response, you’ll want to do something like this:

class yourController extends Controller {

    // this is a property, accessible from any function in this class
    public $id = null;

    // this is the constructor (mentioned by Koo5)
    function __construct() {
        // this is how you reference $id within the class
        $this->id = $this->session->userdata('id');
    }

    function getID() {
        // returning the $id property
        return $this->id;
    }

}

See the manual for more information on PHP properties and constructors. Hope that helps!