How to Parse XML with Namespaces Using SimpleXML: Looping Through Nodes with Specific Namespace Prefixes?

How to Parse XML with Namespaces Using SimpleXML

This question addresses the difficulty of parsing XML with namespaces using SimpleXML. Specifically, the asker seeks to loop through nodes with a specific namespace prefix and display the values.

To achieve this, it's essential to understand that registering namespaces is not required in SimpleXML. The provided XML can be parsed directly without using registerXPathNamespace().

The corrected code to loop through the event:event nodes and extract the event:sessionKey values is:

$xml = new SimpleXMLElement($r);

foreach($xml->xpath('//event:event') as $event) {
    var_export($event->xpath('event:sessionKey'));
}

By specifying the full namespace prefix in the XPath queries, SimpleXML can correctly identify and retrieve the desired elements without any namespace registration.

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