Generate colour from string

stringToRgb.php

<?php 

function stringToRgb($string, $s = 100, $l = 70){

    $h = floor((hexdec(substr(md5($string), 0, 2))/255)*360);
    
    $h /= 360;
    $s /= 100;
    $l /= 100;

    $r = $l;
    $g = $l;
    $b = $l;
    
    $v = ($l <= 0.5) ? ($l * (1.0 + $s)) : ($l + $s - $l * $s);
    
    if ($v > 0){
          $m;
          $sv;
          $sextant;
          $fract;
          $vsf;
          $mid1;
          $mid2;

          $m = $l + $l - $v;
          $sv = ($v - $m ) / $v;
          $h *= 6.0;
          $sextant = floor($h);
          $fract = $h - $sextant;
          $vsf = $v * $sv * $fract;
          $mid1 = $m + $vsf;
          $mid2 = $v - $vsf;

          switch ($sextant)
          {
                case 0:
                      $r = $v;
                      $g = $mid1;
                      $b = $m;
                      break;
                case 1:
                      $r = $mid2;
                      $g = $v;
                      $b = $m;
                      break;
                case 2:
                      $r = $m;
                      $g = $v;
                      $b = $mid1;
                      break;
                case 3:
                      $r = $m;
                      $g = $mid2;
                      $b = $v;
                      break;
                case 4:
                      $r = $mid1;
                      $g = $m;
                      $b = $v;
                      break;
                case 5:
                      $r = $v;
                      $g = $m;
                      $b = $mid2;
                      break;
          }
    }
    
    return "#".dechex(round($r * 255)).dechex(round($g * 255)).dechex(round($b * 255));
}