首先，您需要创建一个custom WordPress page 并配置 Paypal IPN 脚本以发布和获取数据。在这样的页面上，您还可以添加功能以将数据存储在数据库中、通过邮件发送、添加 cron 作业或其他任何 IPN scripts ...
另外，您需要访问paypal网站和set the ipn link，然后将您网站的数据发布到那里，并将其配置为回传到wordpress网站的url，并带有接收paypal ipn post数据的页面...
这是一个页面example：
<?php
class PayPal_IPN{
function infotuts_ipn($im_debut_ipn) {
define('SSL_P_URL', 'https://www.paypal.com/cgi-bin/webscr');
define('SSL_SAND_URL', 'https://www.sandbox.paypal.com/cgi-bin/webscr');
$hostname = gethostbyaddr($_SERVER['REMOTE_ADDR']);
if (!preg_match('/paypal\.com$/', $hostname)) {
$ipn_status = 'Validation post isn\'t from PayPal';
if ($im_debut_ipn == true) {
// mail test
}
return false;
}
// parse the paypal URL
$paypal_url = ($_REQUEST['test_ipn'] == 1) ? SSL_SAND_URL : SSL_P_URL;
$url_parsed = parse_url($paypal_url);
$post_string = '';
foreach ($_REQUEST as $field => $value) {
$post_string .= $field . '=' . urlencode(stripslashes($value)) . '&';
}
$post_string.="cmd=_notify-validate"; // append ipn command
// get the correct paypal url to post request to
$paypal_mode_status = $im_debut_ipn; //get_option('im_sabdbox_mode');
if ($paypal_mode_status == true)
$fp = fsockopen('ssl://www.sandbox.paypal.com', "443", $err_num, $err_str, 60);
else
$fp = fsockopen('ssl://www.paypal.com', "443", $err_num, $err_str, 60);
$ipn_response = '';
if (!$fp) {
// could not open the connection. If loggin is on, the error message
// will be in the log.
$ipn_status = "fsockopen error no. $err_num: $err_str";
if ($im_debut_ipn == true) {
echo 'fsockopen fail';
}
return false;
} else {
// Post the data back to paypal
fputs($fp, "POST $url_parsed[path] HTTP/1.1\r\n");
fputs($fp, "Host: $url_parsed[host]\r\n");
fputs($fp, "Content-type: application/x-www-form-urlencoded\r\n");
fputs($fp, "Content-length: " . strlen($post_string) . "\r\n");
fputs($fp, "Connection: close\r\n\r\n");
fputs($fp, $post_string . "\r\n\r\n");
// loop through the response from the server and append to variable
while (!feof($fp)) {
$ipn_response .= fgets($fp, 1024);
}
fclose($fp); // close connection
}
// Invalid IPN transaction. Check the $ipn_status and log for details.
if (!preg_match("/VERIFIED/s", $ipn_response)) {
$ipn_status = 'IPN Validation Failed';
if ($im_debut_ipn == true) {
echo 'Validation fail';
print_r($_REQUEST);
}
return false;
} else {
$ipn_status = "IPN VERIFIED";
if ($im_debut_ipn == true) {
echo 'SUCCESS';
}
return true;
}
}
function ipn_response($request){
mail("sanjeev00733@gmail.com","My subject",print_r($request,true));
$im_debut_ipn=true;
if ($this->infotuts_ipn($im_debut_ipn)) {
// if paypal sends a response code back let's handle it
if ($im_debut_ipn == true) {
$sub = 'PayPal IPN Debug Email Main';
$msg = print_r($request, true);
$aname = 'infotuts';
//mail send
}
// process the membership since paypal gave us a valid +
$this->insert_data($request);
}
}
function issetCheck($post,$key){
if(isset($post[$key])){
$return=$post[$key];
}
else{
$return='';
}
return $return;
}
function insert_data($request){
require_once('dbconnect.php');
$post=$request;
$item_name=$this->issetCheck($post,'item_name');
$amount=$this->issetCheck($post,'mc_gross');
$currency=$this->issetCheck($post,'mc_currency');
$payer_email=$this->issetCheck($post,'payer_email');
$first_name=$this->issetCheck($post,'first_name');
$last_name=$this->issetCheck($post,'last_name');
$country=$this->issetCheck($post,'residence_country');
$txn_id=$this->issetCheck($post,'txn_id');
$txn_type=$this->issetCheck($post,'txn_type');
$payment_status=$this->issetCheck($post,'payment_status');
$payment_type=$this->issetCheck($post,'payment_type');
$payer_id=$this->issetCheck($post,'payer_id');
$create_date=date('Y-m-d H:i:s');
$payment_date=date('Y-m-d H:i:s');
mysqli_query($con,"INSERT INTO infotuts_transection_tbl (item_name,payer_email,first_name,last_name,amount,currency,country,txn_id,txn_type,payer_id,payment_status,payment_type,create_date,payment_date)
VALUES ('$item_name','$payer_email','$first_name','$last_name','$amount','$currency','$country','$txn_id','$txn_type','$payer_id','$payment_status','$payment_type','$create_date','$payment_date')");
mysqli_close($con);
}
}
$obj = New PayPal_IPN();
$obj->ipn_response($_REQUEST);
?>