background color imagefill

[thosecars82]

Hello

 

I would like to ask you 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