Generate gradient color from PHP

Question

I want to know how to build a function that give the code of an color and display a gradient of this color. For example:

function generate_color(int colorindex)
{  .......
   .......
   Generate 10  pale colors of this color.


}

Please help me

Answer 1

The code Michael references is rather scary. But the solution is straightforward. It may be clearer if you consider simply a grey scale image:

 function create_pallette($start, $end, $entries=10)
 {
    $inc=($start - $end)/($entries-1);
    $out=array(0=>$start);
    for ($x=1; $x<$entries;$x++) {
      $out[$x]=$start+$inc * $x;
    }
    return $out;
 }

Only using a 3D vector (RGB) instead of a 1D vector.

C.