View file image.php

<?php
error_reporting (0);
header ('content-type: image/gif');
$ref = base64_decode ($ref);
$ref = intval($ref);
if ($ref == '') $ref = 'no code';
$im = imagecreate (40,10);
$col = imagecolorallocate ($im,1,1,1);
$col2 = imagecolorallocate ($im,150,150,150);
imagestring ($im,1,1,1,"  ".$ref,$col2);
imagegif ($im);

?>