public static function chargeInvoiceArbitraryAmount($contactId, $invoiceId, $cardId, $amount, $merchantAccountId, $invoiceNotes = 'API Arbitrary Payment')
 {
     //Create a new order (InvoiceService.blankOrder...
     $dummyInvoiceId = Infusionsoft_InvoiceService::createBlankOrder($contactId, $invoiceNotes . " Invoice: " . $amount, date('Ymd\\TH:i:s'));
     try {
         //Add an order item that is the correct amount you want to charge...
         Infusionsoft_InvoiceService::addOrderItem($dummyInvoiceId, 0, 3, $amount, 1, $invoiceNotes . " order", "");
         //Set orders custom field "_ChargeStatus" to "Pending"
         $invoice = new Infusionsoft_Invoice($dummyInvoiceId);
         $dummyOrder = new Infusionsoft_Job($invoice->JobId);
         $dummyOrder->OrderStatus = "Pending";
         $dummyOrder->save();
         //Try to charge the invoice
         $result = Infusionsoft_InvoiceService::chargeInvoice($dummyInvoiceId, $invoiceNotes . " payment", $cardId, $merchantAccountId, false);
     } catch (Exception $e) {
         Infusionsoft_InvoiceService::deleteInvoice($dummyInvoiceId);
         throw new Exception("Failed to charge partial payment. Infusionsoft says: " . $e->getMessage());
     }
     //Update order status "_ChargeStatus" to "Failed", or "Succeeded"
     if ($result['Successful']) {
         //add a credit to the order
         Infusionsoft_InvoiceService::addManualPayment($invoiceId, $amount, date('Ymd\\TH:i:s'), "Credit Card", $invoiceNotes . " partial payment", false);
         $dummyOrder->OrderStatus = "Successful";
         $dummyOrder->save();
     } else {
         //erase the invoice
         Infusionsoft_InvoiceService::deleteInvoice($dummyInvoiceId);
     }
     return $result;
     //Update order status to "Applied"
 }
 public function save($app = null)
 {
     if ($this->Id == '') {
         $invoices = Infusionsoft_DataService::query(new Infusionsoft_Invoice(), array('JobId' => $this->OrderId), 1000, 0, false, $app);
         if (count($invoices) == 0) {
             throw new Infusionsoft_Exception("Could not get invoice for order: " . $this->OrderId . " while creating adding an order item.");
         }
         /** @var Infusionsoft_Invoice $invoice */
         $invoice = array_shift($invoices);
         $result = Infusionsoft_InvoiceService::addOrderItem($invoice->Id, $this->ProductId, $this->ItemType, $this->PPU, $this->Qty, $this->ItemDescription, $this->Notes, $app);
         if (!$result) {
             throw new Infusionsoft_Exception("Couldn't save orderitem: " . json_encode($this->toArray()));
         }
         //Infusionsoft doesn't always use consecutive Ids, but it is very very very rare that the id won't be consecutive if a new record is inserted very quickly after the previous, so even though this isn't ideal, it's what we are doing.
         $newestOrderItems = Infusionsoft_DataService::queryWithOrderBy(new Infusionsoft_OrderItem(), array('OrderId' => $this->OrderId), 'Id', false, 1);
         $newestOrderItem = array_shift($newestOrderItems);
         $this->Id = $newestOrderItem->Id;
     }
     $result = parent::save($app);
     return $result;
 }
}
?>
"><br/>
            quantity: <input type="text" name="quantity" value="<?php 
if (isset($_REQUEST['quantity'])) {
    echo htmlspecialchars($_REQUEST['quantity']);
}
?>
"><br/>
            description: <input type="text" name="description" value="<?php 
if (isset($_REQUEST['description'])) {
    echo htmlspecialchars($_REQUEST['description']);
}
?>
"><br/>
            notes: <input type="text" name="notes" value="<?php 
if (isset($_REQUEST['notes'])) {
    echo htmlspecialchars($_REQUEST['notes']);
}
?>
"><br/>
    <input type="submit">
<input type="hidden" name="go">
</form>
<?php 
include '../infusionsoft.php';
include 'testUtils.php';
if (isset($_REQUEST['go'])) {
    $out = Infusionsoft_InvoiceService::addOrderItem($_REQUEST['invoiceId'], $_REQUEST['productId'], $_REQUEST['type'], $_REQUEST['price'], $_REQUEST['quantity'], $_REQUEST['description'], $_REQUEST['notes']);
    var_dump($out);
}