在开源QuickBooks PHP DevKit中的发票中添加多个行项目

我正在GitHub上使用开源QuickBooks PHP DevKit。我使用示例“example\u invoice\u add.php”添加了针对客户的发票，并添加了一行。如何一次使用同一示例在发票中添加多个行项目。请帮帮我

添加第二行（第三行、第四行、第五行等）与添加第一行完全相同

创建

行

对象，然后调用

$Invoice->addLine（$Line）

例如：

// First line item
$Line = new QuickBooks_IPP_Object_Line();
$Line->setDetailType('SalesItemLineDetail');
$Line->setAmount(12.95 * 2);
$Line->setDescription('Here is my first line item.');

$SalesItemLineDetail = new QuickBooks_IPP_Object_SalesItemLineDetail();
$SalesItemLineDetail->setItemRef('8');
$SalesItemLineDetail->setUnitPrice(12.95);
$SalesItemLineDetail->setQty(2);

$Line->addSalesItemLineDetail($SalesItemLineDetail);

$Invoice->addLine($Line); // Add the line item


// Now let's do the exact same thing again, to add the second line item 
$Line = new QuickBooks_IPP_Object_Line();
$Line->setDetailType('SalesItemLineDetail');
$Line->setAmount(12.95 * 2);
$Line->setDescription('Here is my *SECOND* line item.');

$SalesItemLineDetail = new QuickBooks_IPP_Object_SalesItemLineDetail();
$SalesItemLineDetail->setItemRef('8');
$SalesItemLineDetail->setUnitPrice(12.95);
$SalesItemLineDetail->setQty(2);

$Line->addSalesItemLineDetail($SalesItemLineDetail);

$Invoice->addLine($Line); // Add the line item 


// Hrm, let's keep going. Add another line item by doing the exact same thing again...
$Line = new QuickBooks_IPP_Object_Line();
$Line->setDetailType('SalesItemLineDetail');
$Line->setAmount(12.95 * 2);
$Line->setDescription('Here is my *THIRD* line item.');

$SalesItemLineDetail = new QuickBooks_IPP_Object_SalesItemLineDetail();
$SalesItemLineDetail->setItemRef('8');
$SalesItemLineDetail->setUnitPrice(12.95);
$SalesItemLineDetail->setQty(2);

$Line->addSalesItemLineDetail($SalesItemLineDetail);

$Invoice->addLine($Line);