Embedding objects in objects

[Dummkopf]

Hi,

I´d like to give my object a reference of another object, but it doesnt want to work. Can anybody tell me, where I have to put '&'s, and which alternative is considered best programming-style?

class A {
var $Obj;
function A($obj) { // &$obj ??
$this->Obj = $obj; // &$obj ??
}
}

class refObj {
function refObj() { }
}

$refO = new refObj();
$Obj = new A($refO); // &$refO ??

Any changings made in class A should also change $refO in the main-programm.

I´d be thankful for any help !!

[ahundiak]

class A
{
  var $obj;
  function A(&$obj)
  {
    $this->obj =& $obj;
  }
}
class refObj 
{
  function refObj() { }
}
$refO =& new refObj();
$Obj =& new A($refO); // &$refO ??

It's a bit strange but it grows on you. PHP 5 is supposed to make all this better.

[Dummkopf]

I´ve changed it the way you considered it right, but it still doesn´t want to function.

The object given to class A in the contructor is still another one than the object made in the main-programm. (A copy, as it seems, not a reference.)

The class refObj of course does have some content, too, and I changed it with the A-object and printed the result with the main-programm -> without results.

If I print the changed value with the A-object (from where the changings were also made), everything is fine.

Which of these '&'s is wrong, now ??

[ahundiak]

I think there may have been a typo in the original code. This works:

<?php
class A
{
  var $obj;

  function A(&$obj)
  {
    $this->obj =& $obj;
  }
  function print_obj()
  {
    echo $this->obj->content;
    $this->obj->content = 'Changed again';
  }
}
class refObj 
{
  function refObj() { }
}

$ref =& new refObj();
$ref->content = 'Content Before';

$obj =& new A($ref);

$ref->content = 'Content After';
$obj->print_obj();
echo $ref->content;
?>

I really wish I could figure out how to get rid of all those extras blank lines. Don't forget the $this when changing content inside of the A object.