print file content

[eluser]Qiao[/eluser]
Hi guys!

I want to read file (af.txt near index.php) and echo it content.

controller af.php:

Code:

<?php
class Af extends Controller{
    function Af()
    {
        parent::Controller();
    }

    $this->load->helper('file');

    function index()
    {
        $content = read_file('af.txt');
        $this->load->view('af', $content);
    }
}
?>

view af.php:

Code:

<?=$content?>

The result is a blank page.
What am i doing wrong?