PHP Toolkit 2012.2 : Sample Code to Perform Advanced Search

Below is a sample function that accepts a search string and searches for items with item ID that contains the search string and returns the actual Item ID and Average Cost:
function itemsearchadv($srchstr){
 $service = new NetSuiteService();
 $service->setSearchPreferences(false, 20, true);
 
 $itemSearchField1 = new SearchStringField();
 $itemSearchField1->operator = "contains";
 $itemSearchField1->searchValue = $srchstr;
 $search = new ItemSearchAdvanced();
 $basic = new ItemSearchRowBasic();
 setFields($basic, array(averageCost=>"averageCost",itemId=>"itemId"));
 $search->criteria->basic->itemId = $itemSearchField1;
 $search->columns->basic = $basic;
 $request = new SearchRequest();
 $request->searchRecord = $search;
 $searchResponse = $service->search($request);
 
 $test = new NullField();
 $test = 'itemId';
 if (!$searchResponse->searchResult->status->isSuccess) {
  echo "SEARCH ERROR";
 }else{
  echo "<b>SEARCH SUCCESS</b>
  <p>Records Found: " . $searchResponse->searchResult->totalRecords . "</p>
  ";
  $i = 0;
  $records = $searchResponse->searchResult->searchRowList->searchRow;
  foreach ($records as $record)  {
   print "Item Name: " . $record->basic->itemId[0]->searchValue;print "<br/>";
   print "Average Cost: " . $record->basic->averageCost[0]->searchValue;print "<br/><br/>";
  }
 }
}