membuat pie 3D di php

<?
header("content-type:image/png");
$image=imagecreate(300,300);
imagecolorallocate($image,153,217,234);
$hitam=imagecolorallocate($image,0,0,0);
$abuabu=imagecolorallocate($image,127,127,127);
$orange=imagecolorallocate($image,181,230,29);
$kuning=imagecolorallocate($image,255,242,55);
$ungu=imagecolorallocate($image,163,73,164);
$hijau=imagecolorallocate($image,25,115,10);
$hijaumuda=imagecolorallocate($image,350,200,0);
for ($i = 200; $i > 150; $i--) {
imagefilledarc($image,150,$i,200,150,90,180,$hijau,IMG_ARC_PIE);
imagefilledarc($image,150,$i,200,150,0,90,$orange,IMG_ARC_PIE);
}
imagefilledarc($image,150,150,200,150,270,360,$ungu,IMG_ARC_PIE);
imagefilledarc($image,150,150,200,150,180,270,$hitam,IMG_ARC_PIE);
imagefilledarc($image,150,150,200,150,90,180,$hijaumuda,IMG_ARC_PIE);
imagefilledarc($image,150,150,200,150,0,90,$kuning,IMG_ARC_PIE);
imagepng($image);
?>