Double check your file for the whitspace like the others have stated.
I tried your example and had no problems with it...
Dani wrote:
>Hi again,
>
>I have got this script :
><?PHP
>//setup image
>$height = 200;
>$width = 200;
>
>$im = ImageCreate($width,$height);
>$white = ImageColorAllocate($im, 255, 255, 255);
>$black = ImageColorAllocate($im, 0, 0, 0);
>
>//Draw on image
>ImageFill($im, 0, 0, $black);
>ImageLine($im, 0, 0, $width, $height, $white);
>ImageString($im, 4, 50, 150, "Sales", $white);
>
>//output image
>Header ("Content-type: image/png");
>ImagePng ($im);
>
>//Clean up
>ImageDestroy($im);
>
>?>
>
>but when I execute the script I got this ERROR MESSAGE:
> Cannot add header information - headers already sent by (output started
>at D:\graphic_practise\index.php:10) in D:\graphic_practise\index.php on
>line 25
>
>Any advise?
>
>thanks!
>
>
>
>
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