Enumeration in Codeigniter: Undefined property: ProjectStatus_Enum::$Open

Question

I created a class in Library Folder.

class ProjectStatus_Enum {

    const Open          =   1;
    const InProgress    =   2;
}

and below is the code in Controller.

class ProjectController extends MY_Controller {

    function __construct()
    {
        parent::__construct();
        $this->load->library("ProjectStatus_Enum");
        echo $this->projectstatus_enum->Open;
    }
}

when this line executes...echo $this->projectstatus_enum->Open; I am getting below error..

Undefined property: ProjectStatus_Enum::$Open

Answer 1

Sample class in Library Folder.

class ProjectStatus_Enum {

    const Open          =   1;
    const InProgress    =   2;
}

Class variable will not be accessible directly.

class ProjectController extends MY_Controller {

    function __construct()
    {
        parent::__construct();
        $this->load->library("ProjectStatus_Enum");
        $ProjectStatus = $this->projectstatus_enum;//=> Direct variable call will not work
        echo $ProjectStatus::Open;
    }
}