Something Wrong with this...

Hi there, I've used the domxml and find that something is not right...for example. I run some code like this: xmlfile = "myxml.xml"; $xmldom = domxml_open_file( realpath($xmlfile) ) or die("Couldn't load xmlfile..."); root = $xmldom->document_element(); $node = $root->child_nodes(); echo count($node); // I got 7 children instead of 3 why is did I get 7 children instead of 3 where I suppose to have only 3 children in myxml.xml file therefore if I do something like this: echo $node[*]->get_attribute("Category"); where * is number 1 , 3 and 5 I get results....If the number is 2,4,6 and 7, there will be errors