[PHP] objects in functions?

[Peter Van Dijck]

Hi,
I want to make a recursive function generating a hierarchy using a class.

The following code works fine when I don't wrap the function around it,
but when I do it fails. I can't figure out why...
I'm thinking I may need to make some vars global, or maybe you can't use 
objects inside functions? (No, couldn't be)

Here's the code:
.........
$root  = $tree->open_tree ($title, "");

    function generate_nodes($id) {

        $sql = "select * from hierarchy where parent = $id";
        $res = mysql_debug_query($sql);
        while ($row = mysql_fetch_array($res)) {
             $node = "node" . $count;
             $$node = $tree->add_folder ($root, $row["name"] . " <font 
size=1>" . $row["id"] . "</font>", "");

             $count++;
        }
    }
    generate_nodes($id);
........
Thanks for any hints...
Peter
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