Return highlight hex color for string. Can be used in loop. Return same color for same strings and different for others

get_highlight

<?php
function get_highlight($str) {
    $colors = array('#ccddee', '#ffdddd', '#ddccee',
        '#ddeecc', '#eeccdd', '#cceedd',
        '#eeddcc', '#ddddff', '#ddffdd');
    shuffle($colors);
    static $prev_color = '';
    static $arr = array();
    if (!in_array($str, $arr)) {
        $arr[] = $str;
        foreach ($colors as $color) {
            if ($color != $prev_color) {
                $prev_color = $color;
                break;
            }
        }
        $arr[$str] = $prev_color;
    }
    return $arr[$str];
}
?>