get_property_ptr

hey,

I'm working on simplexml (sources available in pecl), and I want it to
work in a foreach() loop without requiring the use of a temporary
variable, ie:

books.xml
<books>
<book>

<title>The Grapes of Wrath</title> <author>John Steinbeck</author> </book> <book> <title>The Pearl</title> <author>John Steinbeck</author> </book> </books>

books.php
<?php
$books = simplexml_load_file('books.xml');
$booklist = $books->book; // must assign to a temporary variable
foreach ($booklist as $book) {
echo "{$book->title}\n";
}
?>

So I'm trying to figure out how to use the get_property_ptr callback.
I've tried a few things:

1. zend_object_create_proxy. The docs say I can just return a proxy
   object, however, this causes a segfault for me:

return zend_object_create_proxy(object, member TSRMLS_CC);

2. Adding indirection. I just call property_read, and then return a
   pointer to the result of the property_read call. This also yields a
   segfault.

So, any insights on how I might be a smarter boy, and actually get this
thingy to work? :)

-Sterling

--
"Whether you think you can or think you can't -- you are right."
- Henry Ford