没有错误只显示白色屏幕

Question

I'm trying to work locally on my mac with the Mamp software and have a fresh install of Codeigniter set up in a subdirectory of my sites folder and when I try and load my Home controller I'm not getting any errors or have anything being displayed on the screen and I'm trying to find out why that could be.

- Documents
    -Sites
        -mysite
            -application
                -controllers
                    home.php

I'm started the apache and mysql servers and went to http://localhost/mysite/ . The default controller that I have set up in the routes is home and I'm getting a white screen. This is the following code I have inside the home controller.

<?php

class Home extends CI_Controller {
    public function __construct() {
        parent::__construct();
    }

    public function index() {
        public $data = array();
        echo 'this is the index function';
        //$this->load->view('homepage', $data, TRUE);
    }
}

Answer 1

If you don't load a helper/controller/library but you use some of the functions in it, you will get a white screen too.

That is the first thing I check when I get white screens.