* Examples: $array = Xml::toArray(file_get_contents('feed.xml'));
* $array = Xml::toArray(file_get_contents('feed.xml', true, 1, 'attribute'));
*
* Examples: $array = Xml::toArray(file_get_contents('feed.xml'));
* $array = Xml::toArray(file_get_contents('feed.xml', true, 1, 'attribute'));
*