I had to create a script that generated rainbow between 2 to 768 colors in the rainbow. It returns an array that can be referenced. It’s ideal for 5 to 700 results.
<?PHP
// Generate Rainbow Points.
function generatecolorcodes($numberofcolor)
{
// Find numbers to pick.
if ($numberofcolor > 0 && $numberofcolor <= 768)
{
$divis = round(768 / $numberofcolor);
$s = 0;
while ($s < $numberofcolor)
{
$cwheel = $s * $divis;
if ($cwheel >= 0 && $cwheel < 256)
{
$red = 255 - $cwheel;
$green = 0 + $cwheel;
$blue = 0;
}
if ($cwheel >= 256 && $cwheel < 513)
{
$red = 0;
$green = 255 - ($cwheel - 255);
$blue = 0 + ($cwheel - 255);
}
if ($cwheel >= 513 && $cwheel < 768)
{
$red = 0 + ($cwheel - 512);
$green = 0;
$blue = 255 - ($cwheel - 512);
}
$red = dechex($red);
$green = dechex($green);
$blue = dechex($blue);
if (strlen($blue)<2) {$blue = '0'.$blue;}
if (strlen($green)<2){$green = '0'.$green;}
if (strlen($red)<2){$red = '0'.$red;}
$outarray[$s] = "#" . $red . $green . $blue;
$s++;
}
}
return $outarray;
}
?>