define("WIDTH", 300);
define("HEIGHT", 300);
$img = imagecreate(WIDTH,HEIGHT);
$bg = $white = imagecolorallocate($img, 0xFF, 0xFF, 0xFF);
$black = imagecolorallocate($img, 0, 0, 0);
$center_x = (int)WIDTH/2;
$center_y = (int)HEIGHT/2;
imagerectangle($img, 0, 0, WIDTH-1, HEIGHT-1, $black);
imagefilledarc($img,
$center_x,
$center_y,
WIDTH/2,
HEIGHT/2,
0,
90,
$black,
IMG_ARC_PIE);
header("Content-Type: image/png");
imagepng($img);
?>