paypal支付网关集成

时间:2016-12-28 02:21:42

标签: php paypal

我正在将paypal支付网关整合到一个网站中。成功付款后,我将其重定向到success.php文件。在success.php文件中,我已包含所有插入参数和成功消息。它在付款后正确地重定向到success.php文件,但显示付款失败消息,并且没有数据插入数据库。以下是我的success.php网页代码

<?php
 include 'dbConfig.php';


//Get payment information from PayPal
$item_number = $_GET['item_number']; 
$txn_id = $_GET['tx'];
$payment_gross = $_GET['amt'];
$currency_code = $_GET['cc'];
$payment_status = $_GET['st'];

//Get product price from database
 $productResult = $db->query("SELECT price FROM products WHERE id = = '".$item_number."'"); 
$productRow = $productResult->fetch_assoc();
$productPrice = $productRow['price'];

if(!empty($txn_id) && $payment_gross == $productPrice){
//Check if payment data exists with the same TXN ID.
$prevPaymentResult = $db->query("SELECT payment_id FROM payments WHERE txn_id = '".$txn_id."'");

if($prevPaymentResult->num_rows > 0){
    $paymentRow = $prevPaymentResult->fetch_assoc();
    $last_insert_id = $paymentRow['payment_id'];
}else{
    //Insert tansaction data into the database
    $insert = $db->query("INSERT INTO   payments(item_number,txn_id,payment_gross,currency_code,payment_status) VALUES('".$item_number."','".$txn_id."','".$payment_gross."','".$currency_code."','".$payment_status."')");
    $last_insert_id = $db->insert_id;
}
 ?>
<h1>Your payment has been successful.</h1>
<h1>Your Payment ID - <?php echo $last_insert_id; ?></h1>
<?php }else{ ?>
<h1>Your payment has failed.</h1>
<?php } ?>

我做错了什么?

1 个答案:

答案 0 :(得分:0)

正如Van Hoa所建议的,当您将用户重定向到成功页面时,paypal不会将付款信息作为参数发送。 PayPal只会发回令牌和付款人ID。

  

将买家从paypal.com重定向回您的网站时,   PayPal会附加Express Checkout交易令牌和唯一身份   PayPal买家ID作为您的RETURN URL的GET参数;   这些GET参数名为令牌 PayerID

PayPal docs(强调补充)

您可以使用返回的令牌使用GetExpressCheckoutDetails获取付款详细信息,并将您从PayPal返回的令牌传递给它。