<?php
class Dtb {
    public static $funcionarios = ['M','G','N','I'] ;
    public static $atividades = 'Sistemas';
    public static $temp = 12;
}
echo print_r(Dtb::$funcionarios);
echo Dtb::$atividades;
echo Dtb::$temp;

//https://pt.stackoverflow.com/q/499107/101