我正在研究电子商务应用程序，该应用程序要求PayPal支付网关通过信用卡/借记卡从客户那里获得付款。我已经通过开发人员网站上可用的所有PayPal API类型，但我找不到我需要的那个。谁能帮我摆脱这种混乱，哪一个是正确的API代码使用。
<form action="https://www.sandbox.paypal.com/cgi-bin/webscr" method="post">
<!-- Identify your business so that you can collect the payments. -->
<input type="hidden" name="business" value="info@companyname.com">
<!-- Specify a Buy Now button. -->
<input type="hidden" name="cmd" value="_xclick">
<!-- Specify details about the item that buyers will purchase. -->
<input type="hidden" name="item_name" value="Camera">
<input type="hidden" name="item_number" value="CAM0548">
<input type="hidden" name="amount" value="2.0">
<input type="hidden" name="currency_code" value="USD">
<!-- Specify URLs -->
<input type='hidden' name='cancel_return' value='http://localhost/paypal/cancel.php'>
<input type='hidden' name='return' value='http://localhost/paypal/success.php'>
<!-- Display the payment button. -->
<input type="image" name="submit" border="0"
src="https://www.paypalobjects.com/en_US/i/btn/btn_buynow_LG.gif" alt="PayPal - The safer, easier way to pay online">
<img alt="" border="0" width="1" height="1" src="https://www.paypalobjects.com/en_US/i/scr/pixel.gif" >
</form>
我想你应该试试Paypal Express Checkout，这是更好的方式。
参见演示:https://demo.paypal.com/us/demo/navigation?device=desktop&page=merchantHome
下载演示代码:https://demo.paypal.com/us/demo/download?capability=checkOutWithPaypal〈PHP
由paypal与HTML表单的经典集成如下。参考:Paypal html表单基础
<form action="https://www.paypal.com/cgi-bin/webscr" method="post">
<input type="hidden" name="cmd" value="_xclick">
<input type="hidden" name="business" value="seller@designerfotos.com">
<input type="hidden" name="item_name" value="Memorex 256MB Memory Stick">
<input type="hidden" name="item_number" value="MEM32507725">
<input type="hidden" name="amount" value="3">
<input type="hidden" name="tax" value="1">
<input type="hidden" name="quantity" value="1">
<input type="hidden" name="no_note" value="1">
<input type="hidden" name="currency_code" value="USD">
<!-- Enable override of buyers's address stored with PayPal . -->
<input type="hidden" name="address_override" value="1">
<!-- Set variables that override the address stored with PayPal. -->
<input type="hidden" name="first_name" value="John">
<input type="hidden" name="last_name" value="Doe">
<input type="hidden" name="address1" value="345 Lark Ave">
<input type="hidden" name="city" value="San Jose">
<input type="hidden" name="state" value="CA">
<input type="hidden" name="zip" value="95121">
<input type="hidden" name="country" value="US">
<input type="image" name="submit"
src="https://www.paypalobjects.com/en_US/i/btn/btn_buynow_LG.gif"
alt="PayPal - The safer, easier way to pay online">
</form>
并使用ipn侦听器更新服务器上的付款，如paypal文档中所述