class Delegate
{
  public $object = null;
  public $functionname = "";

  public function __construct(&$object, $functionname) 
  {
    $this->object = &$object; 
    $this->functionname = $functionname;
  }

  public function Invoke($value1, $value2 = null)
  {
    return call_user_func(array($this->object, $this->functionname), $value1, $value2);
  }
}

class Ebc
{
  public $SendDelegate = null;

  public function Receive($value)
  {
    $this->Send($value);
  }

  protected function Send($value)
  {
    if (!is_null($this->SendDelegate))
        return $this->SendDelegate->Invoke($value); 
  }
}

class FinalDestination
{
  public function Receive($value)
  {
    echo $value;
  }
}

$final = new FinalDestination();
$ebc = new Ebc();
$ebc->SendDelegate = new Delegate($final, "Receive");
$ebc->Receive("Hallo Welt");