Why php imagefill always black?

Question

Hello guys This is driving me mad. I would really appreciate if you told me any idea about why I see this square in red color just in my local xampp installation. If I run the code in the remote server (http://www.arreglaordenador.com/numberimage2.php) I see the square in black color instead of red. Do you have any ideas?

<?php

$im = imagecreatetruecolor(100, 100);

// sets background to red
$red = imagecolorallocate($im, 255, 0, 0);
imagefill($im, 0, 0, $red);

header('Content-type: image/png');
imagepng($im);
imagedestroy($im);
?>

Thanks

Answer 1

Can you try allocating a different colour first?

$black = imagecolorallocate($im, 0, 0, 0);
$red = imagecolorallocate($im, 255, 0, 0);

I don't exactly see why, but this looks like a transparency issue to me (i.e. red being selected as a transparent colour for some reason).

Most probably, this is due to different GD versions. Can you compare which one you have locally and which one remotely?

Answer 2

Based on the imagecreatetruecolor() documentation, your server probably doesn't have the correct version of the GD image library installed.

Answer 3

This is definitely a GD issue on your server because your code works just fine on both my local WAMP and on my hosting account.

Answer 4

solved. imagefilltoborder works.