Description:
------------
---
From manual page: http://www.php.net/function.imagepng
---
The bug occurs with imagepng(). It just displays an error. The code was completely copied from: http://php.net/manual/en/function.imagecreate.php

Test script:
---------------
<?php
header("Content-Type: image/png");
$im = @imagecreate(110, 20)
    or die("Cannot Initialize new GD image stream");
$background_color = imagecolorallocate($im, 0, 0, 0);
$text_color = imagecolorallocate($im, 233, 14, 91);
imagestring($im, 1, 5, 5,  "A Simple Text String", $text_color);
imagepng($im);
imagedestroy($im);
?>

Expected result:
----------------
An image is supposed to appear (the file path is correct).

Actual result:
--------------
Displays: The image “http://localhost:8080/myphpfile.php” cannot be displayed because it contains errors.