<?php
class c1{
function c1(){
echo 'c1';
}
}
class c2{
public $username;
function c2(){
echo '_c2';
}
function getUsername(){
echo $this->username;
}
}
$c[0] = new c1();
$c[1] = new c2();
$c[1]->username = "test";
$c[1]->getUsername();