PHP variables

I’m trying to get flash to retrive variables from a php file. The php file is nuumbers.php with this inside it.

<?php
$five = "5";
$one = "1";
?>

In the flash file I have a dynamic text box with the var name output.
And this code on the first keyframe.

onEnterFrame = function (){
 _root.loadVariables("http://www.breefield.com/graph/numbers.php","GET");
 _root.output = five;
}

But, guess what. Nothing is shown in the output text box.

What am I doing wrong?