classes/objects association: are they working ?

jlive

I wish to define a class where one local variable is an instance of another class.
Consider this a way to define a complex object by the composition of more less-complex objects.

Seems the way is 'classes/objects association' (see http://www.phpbuilder.com/manual/ref.objaggregation.php)
This feature is experimental, they say.
Seem to me it's not working.

Following that definition, I write:

class Myclass1 {
   var $a;
   var $b;
   function foo() { .... }
}
class Myclass2 {
   var $obj1 = new Myclass1;    //this line returns parser error
   var $notobject;
}

The parser gives an error where is the comment.

Does anybody use classes associations ? Are they working ?
Is there another way to do the same without problems ?

ahundiak

You can only assign constant values using var.
Try:

class Myclass2 {
   var $obj1;    //this line returns parser error
   var $notobject;

  function Myclass2()
  {
    $this->obj1 = new Myclass1;
  }
}

jlive

Great! Now it's working
Thank you

ahundiak

The warning is coming from using
$this->$v1 =
instead of
$this->v1

And of course you don't need the
$this->v1 = new Myclass1;
line at all anymore since
$this->v1 = $obj1;
Just overwrites the value.

jlive

Thank you again
I deleted the previous message since I found a workaround (using calls with predefined values to avoid the missing argument warning)
Now I see also another way in your last post.....
Thank you very mutch