SimpleXML bug with the properties hash

I'm looking for feedback since this is my first commit to PHP and it changes
some behavior of SimpleXMLElement.
If no-one has an objections I'll go ahead and commit the code.

First, here is the original bug:

-------BEGIN------
$string = '<?xml version="1.0"?>
<foo><bar>

<p>Blah 1</p> <p>Blah 2</p> <p>Blah 3</p> <tt>Blah 4</tt> </bar></foo> ';

$foo = simplexml_load_string($string);
$p = $foo->bar->p;
echo count($p);
$p = (array)$foo->bar->p;
echo count($p);
--------END--------

The output should be 33 but is 31 instead.

If you do a var_dump() of $p you get this:
-------BEGIN------
array(1) {
[0]=>
string(6) "Blah 1"
}
--------END--------

With my updated code you get this:
-------BEGIN------
array(3) {
[0]=>
string(6) "Blah 1"
[1]=>
string(6) "Blah 2"
[2]=>
string(6) "Blah 3"
}
--------END--------

The same also applies if you do a var_dump() of "->p" directly (without the
cast).
In the current releases, the dump will contain only the first child node and
not
the second and third. But with my fix in place it will contain all child
nodes.

All the other behavior is unchanged. The code did break one test. The test
for bug #51615 expected the var_dump() to contain only one child node, where
the new code outputs (correctly, I think) all child nodes. So I also changed
that test to have the new expected output.

It does change in the behavior of var_dump() on SimpleXMLElement. Which may
break people who depend on this bug (if there is anyone).

However, I believe the new behavior is correct. Since in the current release
code,
var_dump() excludes valid object properties.

The way I fixed it was to detect if the node is part of node iterator (for
lack of
a better word) which is meant to loop over some but not all children of a
node.
If it is, then I use the SimpleXML iterator functions for traversal when
getting the
properties hash. If it isn't, then I just use the trusty "ptr->next" method.

Taking care to store and then restore the existing iterator data so as to
not break
any outer loops.

I attached a diff of my changes.

Any thoughts?

-- Andrew