[nova912]

If I wanted a function to modify an existing object would the function look like this?

PHP Code:

function append_children_to(&$obj) {

// add one child, $child;

$obj->append_child($child);

}

$thing = new Thing();

$children = $thing->children_num(); // 1

append_children_to($thing);

$children = $thing->children_num(); // 2 

[nova912]

Nvm, after some testing it works as I thought =)