Add Custom Info on Invoice Pdf for Magento

如何在打印出来的Pdf里面增加额外信息，其实只要知道如何操纵数据，最终打印的handle还是Zend来执行，Magento内置了Zend_Pdf类，用他来打印PDF文件，下面是一个示例，比较简单易懂，在此抛砖引玉。以下代码加在Mage_Sales_Model_Order_Pdf_Invoice这个类中。

			/* Gfit Msg Notice */
			$freegiftboxHandle = "Free gift box set";
			$freestandardHandle = "Free gift box set and Free Standard Shipping";
			$freeDHLHandle = "Free gift box set & DHL shipping & Free Gift";
			
			//$payPrice = $this->helper('checkout')->formatPrice(Mage::getSingleton('checkout/cart')->getQuote()->getGrandTotal());;
			
			$_totalData = $order->getData();
			$_grand = $_totalData['grand_total'];
			$payPrice = $_grand;
			
			if($payPrice>65&&$payPrice<160){
				$additionalGift = $freegiftboxHandle;
			}
			if($payPrice>160&&$payPrice<200){
				$additionalGift = $freestandardHandle;
			}
			if($payPrice>=200){
				$additionalGift = $freeDHLHandle;
			}
			
			$page->drawText(Mage::helper('sales')->__('Additonal Gift:   ') . $additionalGift, 250, 780, 'UTF-8');
			/* end of Gift Msg Notice */	

附上效果，带额外信息还有带图打印，大家可以琢磨下，迟些做个高级打印模块出来供大家参考：

That's all ! Enjoy it~