php – Paypal支付数据传输(PDT)错误4002

我正在努力将我的网站与paypal集成并使其在沙盒模式下工作.我在Codeigniter(PHP)工作.我已经得到了完美的IPN通知,但似乎无法弄清楚我在哪里出错PDT(需要这个以显示正确的确认页面并返回).我已多次检查身份令牌,确保htaccess文件不限制回拨的访问权限,确保电子邮件已针对业务字段进行验证,确保一切都将进入沙箱,而不是实时站点,并且确保使用正确的参数启用自动返回,甚至询问技术支持(没有收到任何有用的帮助).但我一直得到“失败”的返回($响应),错误代码为4002.任何有关如何调试它的帮助将不胜感激.

这是我的表格：

<form class="paypal login" action="http://########.com/paypal/purchase" method="post" id="paypal_form">    
    <fieldset id="inputs">
        <input type="hidden" name="first_name" value=""> 
        <input type="hidden" name="last_name" value="">
        <input type="hidden" name="email" value="">
        <input type="hidden" name="quantity" value="">
        <input type="hidden" name="order_tc_id" value="###########">
    </fieldset>
    <fieldset id="actions">
        <input type="submit" id="paypal-btn" class="paypal-order" alt="Order" value="Purchase"/>
    </fieldset>
</form>

这是它的地方：

$querystring = '?';
$querystring .= "business=".urlencode("paypal@#######.net")."&";
$querystring .= "cmd=".urlencode("_xclick")."&";
$querystring .= "amount=".urlencode(krw_usd($items_no_tax_price))."&";
$querystring .= "rm=".urlencode(2)."&";
$querystring .= "quantity=".urlencode($quant)."&";
$querystring .= "first_name=".urlencode($first_name)."&";
$querystring .= "last_name=".urlencode($last_name)."&";
$querystring .= "email=".urlencode($email)."&";
$querystring .= "currency_code=".urlencode("USD")."&";
$querystring .= "return=".urlencode(stripslashes($return_url))."&";
$querystring .= "cancel_return=".urlencode(stripslashes($cancel_url))."&";
$querystring .= "notify_url=".urlencode(stripslashes($notify_url));

header('location:https://www.sandBox.paypal.com/cgi-bin/webscr'.$querystring);

这是返回网址：

$request = curl_init();

curl_setopt_array($request, array
(
  CURLOPT_URL => 'https://www.sandBox.paypal.com/cgi-bin/webscr',
  CURLOPT_POST => 1,
  CURLOPT_POSTFIELDS => http_build_query(array
    (
      'cmd' => '_notify-synch',
      'tx' => $tx,
      'at' => '#############################',
    )),
  CURLOPT_RETURNTRANSFER => 1,
  CURLOPT_HEADER => 0,
));

$response = curl_exec($request);
$status   = curl_getinfo($request, CURLINFO_HTTP_CODE);

curl_close($request);

$response = substr($response, 7);
$response = urldecode($response);

preg_match_all('/^([^=\s]++)=(.*+)/m', $response, $m, PREG_PATTERN_ORDER);
$response = array_combine($m[1], $m[2]);

if(isset($response['charset']) AND strtoupper($response['charset']) !== 'UTF-8')
{
  foreach($response as $key => &$value)
  {
    $value = mb_convert_encoding($value, 'UTF-8', $response['charset']);
  }
  $response['charset_original'] = $response['charset'];
  $response['charset'] = 'UTF-8';
}

ksort($response);

foreach($response as $k=>$v)
{
    echo "Key: " . $k . ", Value: " . $v;
    echo "<br>";
}

解决方法:

$tx_token = strtoupper($_ GET [‘tx’]),它的工作.

php – Paypal支付数据传输(PDT)错误4002

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