Php 贝宝不断得到无效的ipn

这是我的IPN处理程序：

<?php
include 'constants.php';
include 'classes/class.database.php';

$raw_post_data = file_get_contents('php://input');
$raw_post_array = explode('&', $raw_post_data);
$myPost = array();

foreach ($raw_post_array as $keyval) {
    $keyval = explode ('=', $keyval);
    if (count($keyval) == 2)
        $myPost[$keyval[0]] = urldecode($keyval[1]);
}

$req = 'cmd=_notify-validate';

if(function_exists('get_magic_quotes_gpc')) {
    $get_magic_quotes_exists = true;
}

foreach ($myPost as $key => $value) {
    if($get_magic_quotes_exists == true && get_magic_quotes_gpc() == 1) {
        $value = urlencode(stripslashes($value));
    } else {
        $value = urlencode($value);
    }
    $req .= "&$key=$value";
}

if(USE_SANDBOX == true) {
    $paypal_url = "https://www.sandbox.paypal.com/cgi-bin/webscr";
} else {
    $paypal_url = "https://www.paypal.com/cgi-bin/webscr";
}

$ch = curl_init($paypal_url);

if ($ch == FALSE) {
    return FALSE;
}

curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $req);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt($ch, CURLOPT_FORBID_REUSE, 1);

if(DEBUG == true) {
    curl_setopt($ch, CURLOPT_HEADER, 1);
    curl_setopt($ch, CURLINFO_HEADER_OUT, 1);
}

curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30);
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Connection: Close'));

$res = curl_exec($ch);

if (curl_errno($ch) != 0) // cURL error
    {
    if(DEBUG == true) { 
        error_log(date('[Y-m-d H:i e] '). "Can't connect to PayPal to validate IPN message: " . curl_error($ch) . PHP_EOL, 3, LOG_FILE);
    }
    curl_close($ch);
    exit;
} else {
    if(DEBUG == true) {
        error_log(date('[Y-m-d H:i e] '). "HTTP request of validation request:". curl_getinfo($ch, CURLINFO_HEADER_OUT) ." for IPN payload: $req" . PHP_EOL, 3, LOG_FILE);
        error_log(date('[Y-m-d H:i e] '). "HTTP response of validation request: $res" . PHP_EOL, 3, LOG_FILE);
    }
    curl_close($ch);
}

$tokens = explode("\r\n\r\n", trim($res));
$res = trim(end($tokens));

if (strcmp ($res, "VERIFIED") == 0) {
    $status = $_POST['payment_status'];
    $currency = $_POST['mc_currency'];
    $receiver = $_POST['receiver_email'];
    $buyer = $_POST['payer_email'];
    $buyer_name = $_POST['custom'];

    $db = new Database($sql_host, $sql_user, $sql_pass, $sql_data, "payments");
    $db->connect();

    for ($i = 0; $i < 10; $i++) {
        if (isset($_POST['item_name'.$i])) {
            $db->addPayment($_POST['item_name'.$i], $_POST['item_number'.$i], $status, $_POST['mc_gross_'.$i], $currency, $buyer, $receiver, $buyer_name);
        }
    }

    if(DEBUG == true)
        error_log(date('[Y-m-d H:i e] '). "Verified IPN: $req ". PHP_EOL, 3, LOG_FILE);
} else if (strcmp ($res, "INVALID") == 0) {
    if(DEBUG == true) {
        error_log(date('[Y-m-d H:i e] '). "Invalid IPN: $req" . PHP_EOL, 3, LOG_FILE);
    }
}?>

---

看起来您没有将IPN消息发回，在这种情况下，您需要检查与IPN脚本相关的日志，可能有一些错误消息表明存在某些连接问题，然后您可以相应地修复该问题
 您需要处于测试模式，IPN模拟器才能工作

确保设置
define（“使用沙盒”，1）。
那么你应该没事了
这并不能解决你的问题。当我第一次开始使用Paypal IPN时，我做了与您现在所做的完全相同的事情，但是当您必须编写另一个处理程序时会发生什么？您最终将编写（或复制粘贴）完全相同的代码。调试也成为一种痛苦。最后，我遇到了这样一个问题，它处理了所有的细节，并且运行良好。