PHP script to return the hex codes of the 216 "web safe" colors

WebSafe.php

<?php
function web_safe_colors() {
    $ray = array();
    $steps = array(
        '00',
        '33',
        '66',
        '99',
        'cc',
        'ff' );
    foreach ( $steps as $r ) {
        foreach ( $steps as $g ) {
            foreach ( $steps as $b ) {
                $ray[] = $r . $g . $b;
            }
        }
    }
    return $ray;
}