title: Dissapearing PHP Variables
body: <p>I am creating a 3D Secure PHP Project. I am having a rather bizzare issue in that the "MD" code is going missing when re-submitting the Array of data</p>
  
  <p>My code is as follows :</p>
  
  <pre><code>$paRes = $_REQUEST['PaRes'];
  $md = $_REQUEST['MD'];
  
  require "payment_method_3d.php";
  
  
  x_load('cart','crypt','order','payment','tests');
  
  /*
  * For Debugging Purposes
  * Only.
  
  echo "The Value Of PaRes is : ";
  echo $paRes;
  */
  
  $soapClient = new SoapClient("https://www.secpay.com/java-bin/services/SECCardService?wsdl");
  
  $params = array (
      'mid'           =&gt; '',
      'vpn_pswd'      =&gt; '',
      'trans_id'      =&gt; 'TRAN0095', // Transaction ID MUST match what was sent in payment_cc_new file
      'md'            =&gt; $md,
      'paRes'         =&gt; $paRes,
      'options'       =&gt; ''
  );
  </code></pre>
  
  <p>It seems that the $_REQUEST['MD'] string seems to go missing AFTER the soap call. Although I am having difficulty print this out to the screen. The strange thing is the $paRes variable works without issue.</p>
  
  <p>Any ideas why this would be the case?</p>