Showing Two elements from XML file - php

Question

The file can be seen on the following URL: #
The above XML file consists of two elements which I want to be shown in order which are the "product" and "offer".
I use SimpleXML to load the XML feed.
$text = simplexml_load_file('feed.xml');
I also use foreach to show the data from the file
foreach ($text->categories->category->items->product as $product) {}
How is it possible to show the "product" and "offer" from the XML file using a for each statement or any other method?

Answer 1

Does <items> only ever contain <product> and <offer> elements? If so:
foreach ($text->categories->category->items->children() as $product_or_offer) {
// Do something
}
See http://php.net/simplexmlelement.children
If you want to be explicit about only ever getting the product/offer elements, a simple XPath expression could be employed.
$items = $text->categories->category->items;
$items->registerXPathNamespace('so', 'urn:types.partner.api.url.com');
foreach ($items->xpath('so:offer|so:product') as $product_or_offer) {
// Do something
}

Answer 2

Although I'm still don't really get what you would like to obtain I will post some examples of how to deal with this XML via xPath.
First of all select all product and offer nodes:
$xml = simplexml_load_file('feed.xml');
// Make sure to register custom namespace
$xml->registerXPathNamespace('ns', 'urn:types.partner.api.url.com');
$products = $xml->xpath('//ns:product');
$offers = $xml->xpath('//ns:offer');
echo count($products); // Number of all product nodes
echo count($offers); // Number of offer nodes
Basic iteration:
foreach ($products as $product) {
//echo '<pre>'; print_r($product); echo '</pre>';
echo '<pre>'; echo $product->name . ', ' . $product->minPrice; echo '</pre>';
}