PayPal响应得到"Fail"



我正在整合paypal到我的购物车这是我的转账表

      <h3>By Paypal</h3><hr/>
       <label>Click Here</label>
       <br/>
     <?php
      include 'controller/connection.php';
      $paypal_url = 'https://www.sandbox.paypal.com/cgi-bin/webscr';
      $paypal_id = 'my-sellerID_biz@yahoo.com';                                                                                                                                $cancel_url = 'http://my-website/index.php?action=cancel';
      $return_url = 'http://my-website/store.php';
      $i = 0;
      $products = array();
      $qry = mysql_query("select * from temp_cart where tokenId='$token'");
      while ($row = mysql_fetch_array($qry)) {
      $pid = $row[0];
      $pname = $row[1];
      $qty = $row[3];
      $price = $row[4];
      $amount = $row[5];
      $products[] = array('pid' => $pid, 'pname' => $pname, 'qty' => $qty, 'price' => $price, 'amount' => $amount);
       }
    ?>
     <form action="<?php echo $paypal_url;?>" method="post">
     <input type="hidden" name="cmd" value="_cart">
     <input type="hidden" name="upload" value="1">
     <input type="hidden" name="add" value="1">
     <input type="hidden" name="business" value="<?php echo $paypal_id;?>">
             <?php
             foreach ($products as $product) {
             $i++;
              //echo $product['amount'];
              ?>
             <input type="hidden" name="item_name_<?php echo $i;?>" value="<?php echo $product['pname']?>">
             <input type='hidden' name='item_number_<?php echo $i;?>' value='<?php echo $product['pid'] ?>' />
             <input type="hidden" name="amount_<?php echo $i;?>" value="<?php echo $product['amount']?>">
            <?php
              }
             ?>
        <input type='image' src='https://www.sandbox.paypal.com/en_US/i/btn/btn_buynow_SM.gif' name='submit' style='display:{$display_button}' />
   </form>

工作正常。但付款后,当我从贝宝重定向,我得到失败的回应。但在我的邮箱账户显示我完成。给我看购物车。我的代码从贝宝获得响应是:-

<?php
session_start();
//include('connection.php');
/*
 update: 06/27/2011
  - updated to use cURL for better security, assumes PHP version 5.3
*/
// read the post from PayPal system and add 'cmd'
$req = 'cmd=_notify-synch';
$tx_token = $_GET['tx'];
$pp_hostname = "www.sandbox.paypal.com"; 
// read the post from PayPal system and add 'cmd'
$req = 'cmd=_notify-synch';
$tx_token = $_GET['tx'];
$auth_token = "MY API TOKEN";
$req .= "&tx=$tx_token&at=$auth_token";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://$pp_hostname/cgi-bin/webscr");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $req);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 1);
//set cacert.pem verisign certificate path in curl using 'CURLOPT_CAINFO' field here,
//if your server does not bundled with default verisign certificates.
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt($ch, CURLOPT_HTTPHEADER, array("Host: $pp_hostname"));
$res = curl_exec($ch);
curl_close($ch);
if(!$res){
    //HTTP ERROR
}else{
     // parse the data
    $lines = explode("n", $res);
    $keyarray = array();
    echo $lines[0];
    echo "<br>";
    if (strcmp ($lines[0], "SUCCESS") == 0) {
       echo $lines[0];
        for ($i=1; $i<count($lines);$i++){
        list($key,$val) = explode("=", $lines[$i]);
        $keyarray[urldecode($key)] = urldecode($val);
    }
    //echo "skjdhckh";
    // check the payment_status is Completed
    // check that txn_id has not been previously processed
    // check that receiver_email is your Primary PayPal email
    // check that payment_amount/payment_currency are correct


    $user_email = 'myID@gmail.com';
     $site_name = 'Company name';
     $eol = "rn";
     $headers  = 'MIME-Version: 1.0' . $eol;
     $headers .= 'Content-type: text/html; charset=iso-8859-1' . $eol;
     $headers .= 'From:' . $site_name . ' <mailID@gmail.com>'. $eol;
     $headers .= 'Reply-To:' . $site_name . ' <mailID@gmail.com>' . $eol;
     $headers .= 'Return-Path:' . $site_name . ' <mailID@gmail.com>' . $eol;
     $eol = "rn<br />";
     $thanks_text = $eol.$eol.'Thanks!'. $eol;
    if(isset($_SESSION['user']) && ($_SESSION['token']))
        {
                include('connection.php');
                $user=$_SESSION['user'];
                $_SESSION['user']=$user;
                $token=$_SESSION['token'];
                $_SESSION['token']=$token;
                //$sub=$_SESSION['coursename'];
                date_default_timezone_set('Australia/Melbourne'); 
                $date = date('y-m-d h:i:s a', time());
                $qry="update allorder set status='completed',date='$date'  where token='$token' and name1='$user'";
                $run_qry=mysql_query($qry);
                    if($run_qry)
                    {
    /*$select_id="select email from register where username='$username'";
    $run_qry2=mysql_query($select_id);
     if($row=mysql_fetch_row($run_qry2))
    {   */
      $email=$row[0];   
      $email_tpl = 'Hello Buyer,' . $eol;
      $email_tpl .= "We have received your payment of $amount $cc." . $eol;
      $email_tpl .= "Thanks for the purchase." . $eol;
      $email_tpl .= $eol . $thanks_text;
    mail ($email, 'Payment Received', $email_tpl, $headers);
    echo $email;
    $_SESSION['username']=$user;
                ?>
                 <script language="javascript" type="text/javascript">
            // Print a message
            alert('Thank you for your purchase! your Payment was successfull. Now You can print and download your certificate');
                // Redirect to some page of the site.
            window.location = 'index.php';
                </script>
                <?php
    //}
                }
                    else
                    {
                    echo mysql_error();
                    }
    }
    }
    else if (strcmp ($lines[0], "FAIL") == 0) {
       echo 'Transaction Failed';
    }
}
?>

一切都工作正常,但我得到失败响应。如果我忘了什么,请帮助我。

Thanks in advance

如果您正在使用沙箱进行测试,请确保您正在使用测试沙箱卖家帐户中的PDT令牌。

reason FOR FAIL, 4002, or, 4003 RESPONSE

  • 确保你回"tx","cmd",和Auth值对于PayPal返回成功和交易细节,您的PDT脚本需要从返回字符串中提取"tx"变量,使用cmd"_notify-sync"从您的帐户发送验证令牌到PayPal。

  • 无效的认证令牌检查令牌以确保它是准确的,并且被正确地传递回来。确保您的标记是一个连续的字符串,并且在脚本中没有换行符。

  • 确保你没有发送回错误的URL。如果在Sandbox中进行测试,则需要确保将脚本发送回www.sandbox.paypal.com。如果您在活动站点上,则脚本应该发送回www.paypal.com。你将收到失败,如果你是在沙盒测试和你的脚本张贴回现场网站(反之亦然)

  • 验证相同的"tx"超过5次检查用户行为。获得FAIL的另一种方法是,如果您引用相同的"tx"超过5次。示例:如果用户在查看详细信息后刷新PDT页面5次,他们将在最后一次刷新时看到FAIL。这不是一个错误。这样做的目的是为了安全,这样PDT创建的URL就不能被无限期地访问以检索特定于事务的数据。

  • 无效或缺少"tx"值"tx"值是用于收集付款信息的事务ID。如果此参数无效或不存在,您将得到一个FAIL响应,因为无法检索支付数据。

未收到PDT

  • 与付款相关的电子邮件地址要使PDT工作,必须确认按钮代码中用作业务值的电子邮件地址。如果未确认此电子邮件地址,则PDT将无法工作,因为您将看不到附加到返回URL的PDT查询字符串。

  • 确保你使用了一个格式正确的返回URL。当启用PDT时,用作默认自动返回URL的URL必须是有效的主机名或IP地址,而不是内部intranet URL,否则用户将不会自动返回到该URL。确保你使用一个有效的URL作为你希望用户返回的URL,否则你将看不到预期的结果。

  • 订阅样式的支付按钮PDT不是为订阅而设计的,如果您订阅了免费试用版,那么您将在返回页面/PDT过程中看不到任何数据。这是因为PDT传输支付数据,如果在注册时,如果没有支付,那么就没有支付数据要传输。

  • 用户行为PDT是客户登录PayPal账户进行支付时,通过选择返回按钮或不选择任何东西的返回方式激活客户。这意味着买方可以更改退货流程或退出浏览器,而不会传输任何数据。

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