saprfc_export values not displaying

[peter_tedone]

	Hello, I cannot get the export values to display from the saprfc_export.  When I print the array, the fields show blank values, however when I output saprfc_function_debug_info, the fields and their values are all shown. So can anyone show me why the values in the export array are not displaying? $cust_params['PMNTTRMS'] not showing value in php thanks!
	// Create saprfc-instance

$login = array(

"ASHOST"=>"xxx.xxx.xxx.xxx"	// application server
,"SYSNR"=>"00"	// system number
,"CLIENT"=>"400"	// client
,"USER"=>"xxx"	// user

,"PASSWD"=>"xxx"

,"CODEPAGE"=>"1100"

// password

); // detailed debugging information

$rfc = saprfc_open ($login );

//We must know if the function really exists

          $fce = saprfc_function_discover($rfc, "ZZBAPI_SALESORDER_SIMULATE");

          if(!$fce){

               echo "<br>The function module has failed.<br><br>";

            echo "<br> rfc: " . $rfc;

            exit;

          } else {

			echo "<br>The function module connection successful!.<br>";
		}

$cust_params = '';

          //Pass import parameters

			$ORDER_HEADER_IN = array("DOC_TYPE"=>"ZOR",

                              "ORD_REASON" => "WWW",

"PURCH_NO_C" => "WEB ORDER",

                              "SALES_ORG"=>"0010");

          saprfc_import ($fce,"ORDER_HEADER_IN",$ORDER_HEADER_IN);

          //Pass table parameters

          saprfc_table_init ($fce,"ORDER_ITEMS_IN");

		$ORDER_ITEMS_IN = array("ITM_NUMBER"=>"10",
						"MATERIAL" => "000000000000029901",
"REQ_QTY"=>"3");

          saprfc_table_append ($fce,"ORDER_ITEMS_IN", $ORDER_ITEMS_IN);

         // $ORDER_ITEMS_IN = array (

                   // "MATERIAL"=>"P-101",

                  //  "REQ_QTY"=>"0000000001000"

             //  );

          // saprfc_table_append ($fce,"ORDER_ITEMS_IN", $ORDER_ITEMS_IN);

$ORDER_PARTNERS = array (

                    "PARTN_ROLE"=>"AG",

                    "PARTN_NUMB"=>"0000099996"

               );

          saprfc_table_append ($fce,"ORDER_PARTNERS", $ORDER_PARTNERS);

          saprfc_table_init ($fce,"ORDER_ITEMS_OUT");

		//saprfc_export ($fce,"ZBAPICUSTOMER",$cust_params);
		$cust_params = saprfc_export ($fce,"ZBAPICUSTOMER");

   echo ($cust_params);

   //$FULLNAME = saprfc_export ($fce,"FULLNAME");

   //echo ($FULLNAME[FIRST]." ".$FULLNAME[LAST]);

          //Call and execute the function

          $rc = saprfc_call_and_receive ($fce);

	echo "<br>HERE ZBAPICUSTOMER[PMNTTRMS]: " . $cust_params["PMNTTRMS"] . "<br>";
	echo "<br>HERE ZBAPICUSTOMER1: " . $cust_params . "<br>";
	echo "<br>HERE ZBAPICUSTOMER2: " . $cust_params[1] . "<br>";

	echo "<br>HERE ZBAPICUSTOMER3: " . $cust_params[PMNTTRMS] . "<br><br><br>";
	echo "<br>HERE ZBAPICUSTOMER4: " . $cust_params['PMNTTRMS'] . "<br>";
	print_r ($cust_params);
	echo "<br>----<br>";

saprfc_function_debug_info($fce);

foreach ($cust_params as $cust) {

        echo "<br>2HERE cust_params PMNTTRMS2:  " . $cust['PMNTTRMS'] . " - PMNTTRMS: " . $cust["PMNTTRMS"] . "<br>";

       }

[peter_tedone]

ahh ok so I realized what my problem was: The saprfc_export call needed to be made AFTER the saprfc_call_and_receive function..which makes sense..doh!

          $rc = saprfc_call_and_receive ($fce);

  $cust_params = saprfc_export ($fce,"ZBAPICUSTOMER");