Image handling error on Apache

[Indian]

I have this code on a php script

PHP Code:

$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); 


Apache shows only bunch of garbage like

�PNG  ��� IHDR���n���
���V,����PLTE����[an����fIDAT�c`�`fx���`Ǡ���
�41����˖ݒ�q�@੤; {á0� �i

Can anyone help me on this, i don't know why this happens
Thank you

[Jamwa]

From the place where you copied the code, I see that they have included this line:

header("Content-type: image/png");

which you have omitted in your code.

Omitting that line also gives me the same results as you have.

[BandC]

To explain further, including the header command tells your web server to specify to the client browser that the content you are sending is a PNG image and not plain text. So the browser renders an image instead of just dumping the text on the screen.

[Indian]

Thanks i gues it was that

[Vector]

You will also get that if you have any extra spaces anywhere in your script. For example, any 'echo' or 'print' that you forgot to remove, or any whitespace before the opening php tag, or after the closing php tag. Those will all do it too, so be wary of them.