php and xml

[dadamssg87]

I'm trying to figure out how to grab the last "customerPaymentProfileId" in return xml of authorize.net's api. There can be several customerPaymentProfileId's, i just want to grab the last one that appears. I'm good on executing the api call and getting the return xml and putting it in an $xml variable like so...

 

<?php 

$xml = new SimpleXMLElement($response); 
$this->paymentProfileId = (int) $xml->customerPaymentProfileId;

?>

 

I can get a single customerPaymentProfileId like i did above but I just don't know how to cycle through sections of the xml. I'd like to get all of the payment  profiles in an array and then grab the last one in the array.

 

You can see the full xml response on page 101-103 on the authnet api cim documentation here -> http://www.authorize.net/support/CIM_XML_guide.pdf

 

or i've copied it below

 

<?xml version="1.0" encoding="utf-8"?>
<getCustomerProfileResponse 
xmlns="AnetApi/xml/v1/schema/AnetApiSchema.xsd">
  <messages>
    <resultCode>Ok</resultCode>
<message>
      <code>I00001</code>
<text>Successful.</text>
    </message>
  </messages>
<profile>
    <merchantCustomerId>custId123</merchantCustomerId>
<description>some description</description>
<email>mark@example.com</email>
<customerProfileId>10000</customerProfileId>
  <paymentProfiles>
      <billTo>
        <firstName>John</firstName>
<lastName>Doe</lastName>
<company></company>
<address>123 Main St.</address>
<city>Bellevue</city>
<state>WA</state>
<zip>98004</zip>
<country>USA</country>
<phoneNumber>000-000-0000</phoneNumber>
        <faxNumber></faxNumber>
      </billTo>
<customerPaymentProfileId>20000</customerPaymentProfileId>
<payment>
        <creditCard>
          <cardNumber>XXXX1111</cardNumber>
<expirationDate>XXXX</expirationDate>
        </creditCard>
      </payment>
    </paymentProfiles>
<paymentProfiles>
      <customerPaymentProfileId>20001</customerPaymentProfileId>
<payment>
        <bankAccount>
          <accountType>checking</accountType>
<routingNumber>XXXX0000</routingNumber>
<accountNumber>XXXX0000</accountNumber>
<nameOnAccount>John Doe</nameOnAccount>
<bankName>Bank of Washington</bankName>
        </bankAccount>
      </payment>
    </paymentProfiles>
<shipToList>
     <firstName>John</firstName>
      <lastName>Doe</lastName>
<company></company>
<address>123 Main St.</address>
<city>Bellevue</city>
<state>WA</state>
<zip>98004</zip>
<country>USA</country>
<phoneNumber>000-000-0000</phoneNumber>
      <faxNumber></faxNumber>
    </shipToList>
<shipToList>
      <firstName>Jane</firstName>
<lastName>Doe</lastName>
<address>123 Main St.</address>
<city>Bellevue</city>
<state>WA</state>
<zip>98004</zip>
<country>USA</country>
<phoneNumber>000-000-0000</phoneNumber>
    </shipToList>
  </profile>
</getCustomerProfileResponse>

 

[dadamssg87]

got it using xpath().

 

<?php

		$payment_profiles = $xml->xpath('profile/paymentProfiles/customerPaymentProfileId');

		$most_recent = array_pop($payment_profiles);
?>