Parsing an XML response with namespaces - php

Question

I'm getting an XML response that I cannot parse. Here's the thing:
<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<soap:Body>
<soap:Fault>
<faultcode>soap:Client</faultcode>
<faultstring>Exception occurred</faultstring>
<faultactor>https://services.lso.com/partnershippingservices/v1_5/PricingService.asmx</faultactor>
<detail>
<webServiceException xmlns="https://services.lso.com/WebServiceException/v1">
<code>600121</code>
<action>To zip code is outside of service area.</action>
</webServiceException>
</detail>
</soap:Fault>
</soap:Body>
</soap:Envelope>
It's the response when an error occurs. What I want to get is the values of both code and action.
I know how to handle the response when the request was correctly processed, but I can't do much when an error is returned.
Just to give you an idea, this is what I'm doing with the response I can handle:
$responseRate = simplexml_load_string($xmlRateResponse);
$getTotalCharge = $responseRate->children('http://schemas.xmlsoap.org/soap/envelope/')
->Body->children()
->EstimatePriceResponse;
$totalCharge = (float)$getTotalCharge->EstimatePriceResult->TotalCharge;
echo $totalCharge;
With this, I can display the rate that is returned.
Any help will be appreciated. Thanks.

Answer 1

Alright, here's a solution.
$xmlResponse = new SimpleXMLElement($errorResponse);
$xmlResponse->registerXPathNamespace('soap','http://schemas.xmlsoap.org/soap/envelope/');
$result=$xmlResponse->xpath('//soap:Fault');
foreach ($result as $body) {
echo $body->detail->webServiceException->code . "<br>";
echo $body->detail->webServiceException->action . "<br>";
}
This is going to return "600121" and "To zip code is outside of service area.", which is what I want.