Description:
------------
XML_Unserializer works great for turning an XML file into an array, but I can't figure out how to get attributes.

Here's a hypothetical example using http://pear.php.net/rss.php as a base:

Array
(
    [channel] => Array
        (
            [language] => en
            [image] => Array
                (
                    [url] => http://pear.php.net/gifs/pearsmall.gif
                    [link] => http://pear.php.net/
                )
 ...

}

Now, I know this would be against the RSS spec (I just needed an example XML file), but what if "image" had width and height attributes?

[image] => Array
    (
        [url] => http://pear.php.net/gifs/pearsmall.gif
        [link] => http://pear.php.net/
        [attr_width] => 104
        [attr_height] => 50
    )

All is well and good there.  Now imagine that "link" has a "title" attribute:

[image] => Array
    (
        [url] => http://pear.php.net/gifs/pearsmall.gif
        [link] => Array
            {
                [0] => http://pear.php.net/
                [attr_title] => PEAR
            }
    }

Suddenly, "link" has changed from a string to an array.  If the attributes are optional, you could never be sure which it would be. The 0 is used as a key to avoid naming conflicts that could come up with "content" or "data".

One solution would be to make every value an array.  Strings would become arrays with only 1 element (key 0).

Reproduce code:
---------------
require_once 'XML/Unserializer.php';
$options = array('complexType' => 'array');
$unserializer = &new XML_Unserializer($options);

$unserializer->unserialize('http://pear.php.net/rss.php', true);    

$rss = $unserializer->getUnserializedData();
echo "<pre>";
print_r($rss);
echo "</pre>";