How to get the response code form the following

[OwenChatt]

I need to get the ResponseCode and ResponseDescription I am using PHP\[code\]<?xml version="1.0" encoding="utf-8"?><soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"> <soap:Body> <ProcessPaymentResponse xmlns="https://services.incard.com.au"> <ProcessPaymentResult> <ResponseCode>string</ResponseCode> <ResponseDescription>string</ResponseDescription> </ProcessPaymentResult> </ProcessPaymentResponse> </soap:Body></soap:Envelope>\[/code\]