php - Paypal IPN 返回无效

Question

这是我用来解释 PayPal 通知的代码。我一直收到来自 Paypal 的“无效”。很抱歉，这个问题本质上只是一个代码片段，但我已经研究了这么久，似乎无法取得任何进展。

如果有人有任何想法，但需要查看一些调试信息，那么我设法获得它的方法是通过 php mail() 函数 - 所以只要问我就可以得到它。

<?php
    $debugmessage = "";

    require($_SERVER['DOCUMENT_ROOT'] . '/xxxx.php');
    mysql_connect("$server", "$user", "$password") or die(mysql_error());
    mysql_select_db("$database") or die(mysql_error());

    // read the post from PayPal system and add 'cmd'
    $req = 'cmd=_notify-validate';
    foreach ($_POST as $key => $value) {
        $value = urlencode(stripslashes($value));
        $req .= "&$key=$value";
    }

    // post back to PayPal system to validate
    $header = "POST /cgi-bin/webscr HTTP/1.0\r\n";
    $header .= "Content-Type: application/x-www-form-urlencoded\r\n";
    $header .= "Content-Length: " . strlen($req) . "\r\n\r\n";
    $fp = fsockopen ('ssl://www.paypal.com', 443, $errno, $errstr, 30);

    if (!$fp) {
        // HTTP ERROR
        echo "http error";
    } else {
        fputs ($fp, $header . $req);
        while (!feof($fp)) {
            $res = fgets ($fp, 1024);
            $debugmessage .= "|".$res;
            $debugmessage .= "|".strlen($req);
            if (strcmp ($res, "VERIFIED") == 0) {
                // PAYMENT VALIDATED & VERIFIED!
                $debugmessage .= "|"+"payment VALID";

                $email = $_POST['payer_email'];
                $password = mt_rand(100000, 999999);
                mysql_query("INSERT INTO users (email, password) VALUES('". mysql_escape_string($email) ."', '".md5($password)."' ) ") or die(mysql_error());
                $to      = $email;
                $subject = 'Download Area | Login Credentials';
                $message = '
                Thank you for your purchase!
                Your account information
                -------------------------
                Email: '.$email.'
                Password: '.$password.'
                -------------------------
                You can now login at xxxxxxxxxxxx';
                $headers = 'From:xxxxxxx@xxxxxxx.com' . "\r\n";
                mail($to, $subject, $message, $headers);
            }
            else if (strcmp ($res, "INVALID") == 0) {
                $debugmessage .= "|"."payment INvalid";
                // PAYMENT INVALID & INVESTIGATE MANUALY!
                $to      = 'xxxxxx@xxxxxxx.com';
                $subject = 'Download Area | Invalid Payment';
                $message = '
                Dear Administrator,
                A payment has been made but is flagged as INVALID.
                Please verify the payment manualy and contact the buyer.
                Buyer Email: '.$email.'
                ';
                $headers = 'From:xxxxxx@xxxxxxx.com' . "\r\n";
                mail($to, $subject, $message, $headers);

            }
        }
        fclose ($fp);
    }
    mail("xxxxxxx@gmail.com",$debugmessage,"");
?>

以防万一有人理解那可怕的困惑，$debugmessage 在脚本运行后包含这个:

|HTTP/1.0 200 OK |840|X-Frame-Options: SAMEORIGIN |840|Strict-Transport-Security: max-age=14400 |840|Strict-Transport-Security: max-age=14400 |840|Content-Type: text/html; charset=UTF-8 |840|Date: Tue, 05 Mar 2013 04:42:09 GMT |840|Content-Length: 7 |840|Connection: close |840| |840|INVALID|840|payment INvalid

我读过有关不使用 fsockopen 以及使用称为“CURL”的内容的内容，但我对这些内容不太有信心。

非常感谢任何帮助。

Answer 1

5 小时后...我的解决方案是丢弃代码并使用 this tutorial 重做它.

强烈推荐。