[PHP] GD works - PNG not

[Frederico Gomes Barbosa]

Hi

    I´m using php version 4.2.3 with GD version 2.0.7 (with JPG and PNG Support 
enabled). When i try to a specific color in my map, nothing happenes. Why?


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

$im = ImageCreatefrompng ('mapa2.png');

$origem = imagecolorexact($im, 255, 255, 0);
ImageColorSet($im, $origem, 0, 0, 0);

$destino = imagecolorexact($im, 0, 255, 0);
ImageColorSet($im, $destino, 0, 0, 0);

Imagepng($im);
imageDestroy($im);

?>


[]´s
Fred
Goiânia - Brasil