我知道这个问题已被多次询问，但是通过查看所有解决方案，它们似乎都不适合我。 我一直在PayPal网站上使用IPN模拟器将订阅集成到我的网站，但IPN总是返回无效。 我已经尝试了多种方法来实现这一点，但这是我目前的方法：
<?php
class IpnListener {
public $use_curl = true;
public $force_ssl_v3 = false;
public $follow_location = false;
public $use_ssl = true;
public $use_sandbox = false;
public $timeout = 30;
private $post_data = array();
private $post_uri = '';
private $response_status = '';
private $response = '';
const PAYPAL_HOST = 'www.paypal.com';
const SANDBOX_HOST = 'www.sandbox.paypal.com';
protected function curlPost($encoded_data) {
if ($this->use_ssl) {
$uri = 'https://'.$this->getPaypalHost().'/cgi-bin/webscr';
$this->post_uri = $uri;
} else {
$uri = 'http://'.$this->getPaypalHost().'/cgi-bin/webscr';
$this->post_uri = $uri;
}
$ch = curl_init();
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt($ch, CURLOPT_CAINFO, dirname(__FILE__)."/cacert.pem");
curl_setopt($ch, CURLOPT_URL, $uri);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $encoded_data);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, $this->follow_location);
curl_setopt($ch, CURLOPT_TIMEOUT, $this->timeout);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HEADER, true);
if ($this->force_ssl_v3) {
curl_setopt($ch, CURLOPT_SSLVERSION, 3);
} else {
curl_setopt($ch, CURLOPT_SSLVERSION, 4);
}
$this->response = curl_exec($ch);
$this->response_status = strval(curl_getinfo($ch, CURLINFO_HTTP_CODE));
if ($this->response === false || $this->response_status == '0') {
$errno = curl_errno($ch);
$errstr = curl_error($ch);
throw new Exception("cURL error: [$errno] $errstr");
}
}
protected function fsockPost($encoded_data) {
if ($this->use_ssl) {
$uri = 'ssl://'.$this->getPaypalHost();
$port = '443';
$this->post_uri = $uri.'/cgi-bin/webscr';
} else {
$uri = $this->getPaypalHost(); // no "http://" in call to fsockopen()
$port = '80';
$this->post_uri = 'http://'.$uri.'/cgi-bin/webscr';
}
$fp = fsockopen($uri, $port, $errno, $errstr, $this->timeout);
if (!$fp) {
// fsockopen error
throw new Exception("fsockopen error: [$errno] $errstr");
}
$header = "POST /cgi-bin/webscr HTTP/1.1\r\n";
$header .= "Host: ".$this->getPaypalHost()."\r\n";
$header .= "Content-Type: application/x-www-form-urlencoded\r\n";
$header .= "Content-Length: ".strlen($encoded_data)."\r\n";
$header .= "Connection: Close\r\n\r\n";
fputs($fp, $header.$encoded_data."\r\n\r\n");
while(!feof($fp)) {
if (empty($this->response)) {
// extract HTTP status from first line
$this->response .= $status = fgets($fp, 1024);
$this->response_status = trim(substr($status, 9, 4));
} else {
$this->response .= fgets($fp, 1024);
}
}
fclose($fp);
}
private function getPaypalHost() {
if ($this->use_sandbox) return self::SANDBOX_HOST;
else return self::PAYPAL_HOST;
}
public function getPostUri() {
return $this->post_uri;
}
public function getResponse() {
return $this->response;
}
public function getResponseStatus() {
return $this->response_status;
}
public function getTextReport() {
$r = '';
// date and POST url
for ($i=0; $i<80; $i++) { $r .= '-'; }
$r .= "\n[".date('m/d/Y g:i A').'] - '.$this->getPostUri();
if ($this->use_curl) $r .= " (curl)\n";
else $r .= " (fsockopen)\n";
// HTTP Response
for ($i=0; $i<80; $i++) { $r .= '-'; }
$r .= "\n{$this->getResponse()}\n";
// POST vars
for ($i=0; $i<80; $i++) { $r .= '-'; }
$r .= "\n";
foreach ($this->post_data as $key => $value) {
$r .= str_pad($key, 25)."$value\n";
}
$r .= "\n\n";
return $r;
}
public function processIpn($post_data=null) {
$encoded_data = 'cmd=_notify-validate';
if ($post_data === null) {
// use raw POST data
if (!empty($_POST)) {
$this->post_data = $_POST;
$encoded_data .= '&'.file_get_contents('php://input');
} else {
throw new Exception("No POST data found.");
}
} else {
// use provided data array
$this->post_data = $post_data;
foreach ($this->post_data as $key => $value) {
$encoded_data .= "&$key=".urlencode($value);
}
}
if ($this->use_curl) $this->curlPost($encoded_data);
else $this->fsockPost($encoded_data);
if (strpos($this->response_status, '200') === false) {
throw new Exception("Invalid response status: ".$this->response_status);
}
if (strpos($this->response, "VERIFIED") !== false) {
return true;
} elseif (strpos($this->response, "INVALID") !== false) {
return false;
} else {
throw new Exception("Unexpected response from PayPal.");
}
}
public function requirePostMethod() {
// require POST requests
if ($_SERVER['REQUEST_METHOD'] && $_SERVER['REQUEST_METHOD'] != 'POST') {
header('Allow: POST', true, 405);
throw new Exception("Invalid HTTP request method.");
}
}
然后是Payment.php类，这也是PayPal发送请求的地方。
/*The Database Connection Code Is Here*/
include('ipnlistener.php');
$listener = new IpnListener();
$listener->use_sandbox = true;
//$listener->use_curl = false;
try {
$verified = $listener->processIpn();
} catch (Exception $e) {
file_put_contents("paymentdev.php", $e->getMessage()." ".date("H:i"));
//file_put_contents("paymentdev.php", "fudge");
exit(0);
}
if ($verified) {
file_put_contents("paymentdev.php", "test");
$data = $_POST;
$user_id = json_decode($data['custom'])->user_id;
$subscription = ($data['mc_gross_1'] == '49.95') ? 2 : 1;
$txn_id = $data['txn_id'];
$user_id = $user_id;
$paypal_id = $data['subsc_id'];
$subscription = $subscription;
$expires = date('Y-m-d H:i:s', strtotime('+1 Month'));
$sql = "SELECT * FROM payments WHERE user_id=$user_id";
$payment = $mysqli->query($sql);
if(isset($payment) && $payment->num_rows > 0)
{
$sql = "DELETE FROM payments WHERE user_id=$user_id";
$delete = $mysqli->query($sql);
}
$sql = "INSERT INTO payments (txn_id, user_id, paypal_id, expires, subscription) VALUES ('$txn_id', $user_id, '$paypal_id', '$expires', $subscription)";
$insertpayment = $mysqli->query($sql);
file_put_contents("paymentdev.php", $mysqli->error);
} else {
file_put_contents("paymentdev.php", "Transaction not verified ".date("H:i")."<br>".$listener->getTextReport());
echo "Error: Transaction not verified";
}
提前感谢所有帮助人员！
答案 0 :(得分：0)
原来我使用的代码很好，我更新了服务器只是为了确保它使用最新的cURL并打开ssl，但即使如此，沙盒总是会返回INVALID。我尝试了实时版本，订阅价格为0.01美元，付款通过，有效且我的数据库已更新
必须是IPN模拟器/沙箱的奇怪之处