Recursion woes

[Anon]

In PHP 3, it appears that when I construct an object and pass it into a method, it gets copied and the method operates on the copy. This poses a problem where I wasnt to have a tree structure of nodes -

<?
class Node
{
var $kids;

function Node()
{
$this->kids = array();
}

function add_child($node)
{
// This adds a COPY of node and not
// the actual node to the kids list
$this->kids[] = $node;
}
}

$root = new Node();
$child = new Node();
// I want to add child to the root node
$root->add_child($child);
?>

Is there any way to convince PHP3 to pass the object by reference and avoid the copy being worked on or is this a reason to move to PHP4?

Thanks!

[Anon]

Whenever you get into object stuff, you definitely want to move to PHP4. Don't look back. It's much better than PHP3, although PHP4 is not GPL, but instead "PHP Licensed", which is similar to the QPL (troll-tech) license.

Don't know if you care about that stuff, but if you care about objects, PHP4 is definitely the way to go.

--Robert