<?php
  include_once("Summeerija.class.php");
  class MassiivisSummeerija implements Summeerija{
     private $arvud=array();
     function nulli(){$this->arvud=array();}
     function lisa($kogus){array_push($this->arvud, intval($kogus));}
     function kysiSumma(){return array_sum($this->arvud);} 
     function kysiHTML(){
         join(", ", $this->arvud);
     }
  }