for ($y=0;$y{
echo n;for ($x=0;$x{
$abs00=sqrt(($x*$x)+($y*$y));
if ($abs00>16)
$abs00=16;
$abs01=sqrt(($x*$x)+((16-$y)*(16-$y)));
if ($abs01>16)
$abs01=16;
$abs10=sqrt(((16-$x)*(16-$x))+($y*$y));
if ($abs10>16)
$abs10=16;
$red=((16-$abs00)*16)-1;
if ($red$red=0;
$green=((16-$abs01)*16)-1;
if ($green$green=0;
$blue= ((16-$abs10)*16)-1;
if ($blue$blue=0;
$col = sprintf(%02x%02x%02x,$red,$green,$blue);
echo
($red,$green,$blue=$col) n;
}echo
n;
}
?>