Naming method inside of a Class

In MVC OOP  I am getting this warning:
Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; Data_model has a deprecated constructor in

Here is the class in my file data_model.php

Class Data_model extends CI_Model {

    function data_model() {
        $this->load->database();
        $this->table_name = 'data';
    }

Select all Open in new window

How would I call how would you do it?