<? $brush = imagecreate(100,100); $brushtrans = imagecolorallocate($brush, 0, 0, 0); imagecolortransparent($brush, $brushtrans); for ($k = 1; $k < 18; ++$k) { $color = imagecolorallocate($brush, 255, $k * 15, 0); imagefilledellipse($brush, $k * 5, $k * 5, 5, 5, $color); } imagepng($brush); imagedestroy($brush); ?>