XML : PHP Soap: Property of object set to an array becoming multiple copies of that object in XML

I'm putting together a SOAP web service using PHP's SoapServer class with a WSDL supplied by a third party. The app runs on Drupal, but this is a separate file that bootstraps Drupal's functions.

The app is on our internal network so I put the WSDL on Pastebin.

This is the code that's producing the anomaly:

  $r_userprods = db_query($q_userprods,array(':fid'=>$fid));  $products = array();    // Loop thru their authorized products  foreach($r_userprods as $prod) {        // Push the product onto the array of products that this teacher has access to      $product = new CogneroProduct;      $product->CogneroProductID = $prod->casid;      $product->DateAuthorizedEpochUTC = $prod->sdate;      $product->ProductTitle = $prod->pname;      $products[] = $product;  }    $Instructor->ArrayOfClassitem = $classes;  $Instructor->ArrayOfCogneroProductsAuthorized = $products;    

This is producing the following XML when the service is called:

  <ArrayOfCogneroProductsAuthorized>      <CogneroProductID>(prod id here)</CogneroProductID>      <ProductTitle>(prod name here)</ProductTitle>      <DateAuthorizedEpochUTC>(date here)</DateAuthorizedEpochUTC>  </ArrayOfCogneroProductsAuthorized>  <ArrayOfCogneroProductsAuthorized>      <CogneroProductID>(prod id here)</CogneroProductID>      <ProductTitle>(prod name here)</ProductTitle>      <DateAuthorizedEpochUTC>(date here)</DateAuthorizedEpochUTC>  </ArrayOfCogneroProductsAuthorized>  <ArrayOfCogneroProductsAuthorized>      <CogneroProductID>(prod id here)</CogneroProductID>      <ProductTitle>(prod name here)</ProductTitle>      <DateAuthorizedEpochUTC>(date here)</DateAuthorizedEpochUTC>  </ArrayOfCogneroProductsAuthorized>  ...    

It's actually supposed to be like this:

  <ArrayOfCogneroProductsAuthorized>      <item>          <CogneroProductID>(prod id here)</CogneroProductID>          <ProductTitle>(prod name here)</ProductTitle>           <DateAuthorizedEpochUTC>(date here)</DateAuthorizedEpochUTC>      </item>      <item>          <CogneroProductID>(prod id here)</CogneroProductID>          <ProductTitle>(prod name here)</ProductTitle>          <DateAuthorizedEpochUTC>(date here)</DateAuthorizedEpochUTC>       </item>      <item>          <CogneroProductID>(prod id here)</CogneroProductID>          <ProductTitle>(prod name here)</ProductTitle>          <DateAuthorizedEpochUTC>(date here)</DateAuthorizedEpochUTC>      </item>      ...  </ArrayOfCogneroProductsAuthorized>    

The ArrayOfCogneroProductAuthorized class has a single property called item, and I'm assigning the variable $products to that property, as I intend there to be one <ArrayOfCogneroProductsAuthorized> in the XML per the correct format above, but it's turning the one property into many copies of that tag.

How can I change the SoapServer code to make the XML match what is expected?

Thank you in advance for any assistance or guidance you can provide.