Portable functions in OOP?

[eluser]tonanbarbarian[/eluser]
umm no use this

Code:

function login() {
        
        $this->load->model('student/auth_model');
            
            if(isset($_POST['submit'])){
                $email         = $_POST['email'];
                $password    = $_POST['password'];
            }
            
        $this->auth_model->login($email,$password);
        
    }