Displaying Status Image

Hmmm, I'v got this

Code:

<?php
    header("Content-Type: image/png");
    if(fsockopen("127.0.0.1", "25565")) {
        echo file_get_contents("on.png");
    } else {
        echo file_get_contents("off.png");
    }
?>

The only problem is it doesn't show the offline image, whats the problem? And yes it is named right!