PHP XMLReader xml:lang - php

Question

How can I read the xml:lang Value from this xml File???
<Catalog><Products>
<Product>
<Id>123</Id>
<Name xml:lang="en">name english product</Name>
<Description xml:lang="en">desc xyz</Description>
<Name xml:lang="de">name german</Name>
<Description xml:lang="de">desc germa</Description>
<Image num="1"><Url>pic.jpg</Url></Image>
<Image num="2"><Url>pic2.jpg</Url></Image>
</Product>
<Product>...
I want the value of the xml:lang="de" - Tag and the Image-Values.
Does anybody have an idea???
Thanx :-)
Update: I parse the xml like this, but how do i get this values???
$datei = "test.xml";
$z = new XMLReader;
$z->open($datei);
$doc = new DOMDocument;
while ($z->read() && $z->name !== 'Product');
$i = 0; while ($z->name === 'Product')
{ $i++;
$node = simplexml_import_dom($doc->importNode($z->expand(), true));
...

Answer 1

I think this should do it.
$simpleXml = new SimpleXMLElement(file_get_contents($datei));
foreach ($simpleXml->Products->Product as $product) {
$name = $product->xpath('Name[#xml:lang="en"]')[0];
echo $name . "\n";
foreach($product->Image as $img) {
echo $img->Url . "\n";
}
}

Answer 2

xpath use to many resurses. You can scan it, taking needed nodes. In the code you will see how take name and value of nodes and attributes, which have prefix.
$simpleXml = new SimpleXMLElement(file_get_contents($datei)));
foreach ($simpleXml->Products->Product as $products) // list of nodes with same name
foreach($products as $product) { // every node
if ($product->getName() === 'Image') { // for image take child
echo $product->Url->getName() . " = " . $product->Url ."\n";
$attrs = $product->attributes(); // Attribute without prefix
if(isset($attrs['num'])) echo " num = " . $attrs['num'] . "\n";
}
else echo $product->getName() . " = " . $product ."\n";
$attrs = $product->attributes('xml', true); // if 2nd true, 1st is prefix
if(isset($attrs['lang'])) echo " lang = " . $attrs['lang'] . "\n";
}
result
Id = 123
Name = name english product
lang = en
Description = desc xyz
lang = en
Name = name german
lang = de
Description = desc germa
lang = de
Url = pic.jpg
num = 1
Url = pic2.jpg
num = 2