Reference na objekt

class Pokus 
{
   private $x = null;
   public function __construct(Pokus1 &$obj)
   {
       $this->x = $obj;
   }
   
   
   public function GetPokus1($i)
   {
       $this->x->SetCislo($i);
       return $this->x->GetCislo();
   }
}

class Pokus1
{
    private $int;
    public function __construct($i)
    {
        $this->int = $i;
    }
    
    public function SetCislo($i)
    {
        $this->int = $i;
    }
    
    
    public function GetCislo()
    {
        return $this->int;
    }
}

include "Pokus.php";
$p1 = new Pokus1(10);
echo $p1->GetCislo()."<br>"; //Vrátí 10

$pokus = new Pokus(&$p1);
echo $pokus->GetPokus1(100)."<br>"; //Vrátí 100

echo $p1->GetCislo()