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simplexml and xpath - Need some help


rg66

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Hello,

 

I am trying to parse an xml which comes back from Amazon and I am trying to know how many Browsenodes are shown within the XML.

 

I am using the classs Tarzan to get the xml from Amazon and the returned data is automatically placed into simplexml.

 

So currently I have this script

 

	$nodeinfo = $pas->browse_node_lookup($node);

$xmlNode = $nodeinfo ->body->BrowseNodes->BrowseNode->xpath('/Ancestors');
$nodeCount = count ( $xmlNode );
if($nodeCount){
echo "NodeCount".$nodeCount."\n";
}

 

The $nodeinfo holds the following xml structure and I am only showing the part for the Nodes

           [browseNodes] => SimpleXMLElement Object
                (
                    [Request] => SimpleXMLElement Object
                        (
                            [isValid] => True
                            [browseNodeLookupRequest] => SimpleXMLElement Object
                                (
                                    [browseNodeId] => 16197
                                )

                        )

                    [browseNode] => SimpleXMLElement Object
                        (
                            [browseNodeId] => 16197
                            [Name] => Epic
                            [Ancestors] => SimpleXMLElement Object
                                (
                                    [browseNode] => SimpleXMLElement Object
                                        (
                                            [browseNodeId] => 16190
                                            [Name] => Fantasy
                                            [Ancestors] => SimpleXMLElement Object
                                                (
                                                    [browseNode] => SimpleXMLElement Object
                                                        (
                                                            [browseNodeId] => 25
                                                            [Name] => Science Fiction & Fantasy
                                                            [Ancestors] => SimpleXMLElement Object
                                                                (
                                                                    [browseNode] => SimpleXMLElement Object
                                                                        (
                                                                            [browseNodeId] => 1000
                                                                            [Name] => Subjects
                                                                            [isCategoryRoot] => 1
                                                                            [Ancestors] => SimpleXMLElement Object
                                                                                (
                                                                                    [browseNode] => SimpleXMLElement Object
                                                                                        (
                                                                                            [browseNodeId] => 283155
                                                                                            [Name] => Books

 

with the Xpath I am trying to get the number how often "Ancestors" is shown.  With this count I am able to goto my next programming script.

 

With my script this is not working, it always gives me a 1.

 

Is there a better way then how I have tried to solve it to count the Ancesters node?

 

Is there also a way how to read the Nodes backway to front?  Amazon gives the Structure of an item from the lowest group to the highest.

 

I am kind of new with Simplexml and would really need some help.

 

Hope some one can help me out.

 

Best regards,

 

Robert

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