Question

I’m trying to create a simple example php script, there is a user class and then two controllers.

Imagine it as an MVC with no view.

At the moment I cannot get getUserId() to work within showUserId() in usercontroller, what am I doing wrong?

PHP

<?
class user{

    function getUserId(){

        return 1; //Simple Example
    }
}

class controller{

    function __construct(){

        $user = new User();
    }
}

class usercontroller extends controller{

    function __construct(){

        $user = new User();
    }

    function showUserId() {

        echo $user->getUserId();
    }
}
?>

Answer 1

class usercontroller extends controller{

    private $user;

    function __construct(){

        $this->user = new User();
    }

    function showUserId() {

        echo $this->user->getUserId();
    }
}

You need to define the $user as class attribute of the controller class, define it in constructor, then you can use it in all functions..

Edit;

Yes you can define in oarent and call parent’s constructor in child constructor, and use it..

<?
class user{   
    function getUserId(){    
        return 1; //Simple Example
    }
}

class controller{
    protected $user;
    function __construct(){    
        $this->user = new User();
    }
}

class usercontroller extends controller{

    function __construct(){
        parent::__construct();
        //$user = new User();
    }

    function showUserId() {    
        echo $this->user->getUserId();
    }
}

$controller_instance = new usercontroller();
$controller_instance->showUserId();    
?>