PHP generate image - problems with background transparency

Hi,

I've got this code generating an image with some specified text on top of a specified background. The background is a .png image whith a transparent background. However, the php-generated image does not have the transparent background as the original image had - it's filled with black instead.

The second picture is the original while the first is a screenshot of the php result:

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

$image = imagecreatefrompng("seddel.png");

//imagecolorallocate($image, R, G, B) in HEX values
$font_black = imagecolorallocate($image, 2, 1, 8);

$string = "your text 1";


//($image, fontsize, rightindent, downindent, data, txtcolour)
imagestring($image, 3, 7, 30, $string, $font_black);


imagepng($image);
imagedestroy($image);

?>

Does anybody know why this is caused and how to fix it?

PHP can't retain transparent backgrounds....

so you'll just have to edit it to white or something because currently PHP just makes they black :mad:

Damn, that sucks :mad: But thanks, it makes scense now.

EDIT: There is not any other way to preserve transparency in PNG images while doing what I want?
Also, if the answear is no, how would I then go around having only the text and NO background-color or image?