$animage = imagecreate (500, 500);
$white = imagecolorallocate ($animage, 255, 255, 255);
$black = imagecolorallocate ($animage, 0, 0, 0);
imagefilledrectangle ($animage, 0, 0, 500, 500, $black);
$blue = imagecolorallocate ($animage, 0, 0, 255);
$green = imagecolorallocate ($animage, 0, 255, 0);
$myvalues = array ("1","2","3","4","5","6");
$barwidth = (int) (500 / ((count ($myvalues) * 2)+ 1));
$barheightpernum = (int) (500 / 10);
imagefilledrectangle ($animage, 1, 300,498, $black);
imagepng ($animage);
header ("Content-type: image/png");
imagedestroy ($animage);
?>