<?php
function ChangeStyle($rcaw, $things, $voice) {
    if($rcaw == 't' && $things == 't' && $voice == 't') {
        return 'rcaw-banner-full-mode ';
    }

    if($rcaw == 'f' && $things == 'f' && $voice == 'f') {
        return 'all-in-none-mode ';
    }

    $key = 0;

    $classMap = [
        1 => 'rcaw-banner-none-mode',
        3 => 'things-banner-none-mode',
        4 => 'classA classB',
        5 => 'voice-banner-none-mode',
        6 => 'classC classB',
        8 => 'class dayoos'
    ];

    $key += $rcaw == 't' ? 1 : 0;
    $key += $things == 't' ?  3 : 0;
    $key += $voice == 't' ? 5 : 0;

    return $classMap[$key];
}