我无法让IPN正常工作。我已经多年了。希望你们中的一个可以帮助我。大部分代码都是从http://www.evoluted.net/thinktank/web-development/paypal-php-integration复制来帮助我开始，然后我在php中添加了我需要的代码。我没有使用functions.php。
<?php
// Database variables
$host = "hidden"; //database location
$user = "hidden"; //database username
$pass = "hidden"; //database password
$db_name = "hidden"; //database name
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
// assign posted variables to local variables
$data['item_name'] = $_POST['item_name'];
$data['item_number'] = $_POST['item_number'];
$data['payment_status'] = $_POST['payment_status'];
$data['payment_amount'] = $_POST['mc_gross'];
$data['payment_currency'] = $_POST['mc_currency'];
$data['txn_id'] = $_POST['txn_id'];
$data['receiver_email'] = $_POST['receiver_email'];
$data['payer_email'] = $_POST['payer_email'];
$data['playersname'] = $_POST['playersname'];
$data['item'] = $_POST['item'];
$data['price'] = $_POST['price'];
$item_name = $data['item'];
$item_amount = $data['price'];
$player_name = $data['playersname'];
// Create connection
$conn = new mysqli($host, $user, $pass, $db_name);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$sql = "INSERT INTO `payments` (txnid, payment_amount, payment_status, itemid, createdtime) VALUES (
'".$data['payment_currency']."' ,
'".$data['price']."' ,
'".$data['playersname']."' ,
'".$data['item'] ."' ,
'".date("Y-m-d H:i:s")."'
)";
if ($conn->multi_query($sql) === TRUE) {
echo "New records created successfully";
} else {
echo "Error: " . $sql . "<br>" . $conn->error;
}
$conn->close();
// PayPal settings
$paypal_email = 'thomasboyd2013-facilitator@hotmail.co.uk';
$return_url = 'https://28days.000webhostapp.com/Successful.html';
$cancel_url = 'https://28days.000webhostapp.com/Cancelled.html';
$notify_url = 'https://28days.000webhostapp.com/ipn.php';
// Check if paypal request or response
if (!isset($_POST["txn_id"]) && !isset($_POST["txn_type"])){
$querystring = '';
$data['item'] = $_POST['item'];
$data['price'] = $_POST['price'];
$item_name = $data['item'];
// so I can see who bought what:
if ($item_name == "500g") {
$item_amount = 1.00;
}
if ($item_name == "2000g") {
$item_amount = 3.00;
}
if ($item_name == "25level") {
$item_amount = 5.00;
}
if ($item_name == "35level") {
$item_amount = 8.00;
}
// Firstly Append paypal account to querystring
$querystring .= "?business=".urlencode($paypal_email)."&";
// Append amount& currency (£) to quersytring so it cannot be edited in html
//The item name and amount can be brought in dynamically by querying the $_POST['item_number'] variable.
$querystring .= "item_name=".urlencode($item_name)."&";
$querystring .= "amount=".urlencode($item_amount)."&";
//loop for posted values and append to querystring
foreach($_POST as $key => $value){
$value = urlencode(stripslashes($value));
$querystring .= "$key=$value&";
}
// Append paypal return addresses
$querystring .= "return=".urlencode(stripslashes($return_url))."&";
$querystring .= "cancel_return=".urlencode(stripslashes($cancel_url))."&";
$querystring .= "notify_url=".urlencode($notify_url);
// Append querystring with custom field///////////////////
$querystring .= "&custom=".$player_name;
// Redirect to paypal IPN
header('location:https://www.sandbox.paypal.com/cgi-bin/webscr'.$querystring);
exit();
}
//Database Connection
$link = mysql_connect($host, $user, $pass);
mysql_select_db($db_name);
// Response from Paypal
// read the post from PayPal system and add 'cmd'
$req = 'cmd=_notify-validate';
foreach ($_POST as $key => $value) {
$value = urlencode($value);
$value = preg_replace('/(.*[^%^0^D])(%0A)(.*)/i','${1}%0D%0A${3}',$value);// IPN fix
$req .= "&$key=$value";
}
// assign posted variables to local variables
$data['item_name'] = $_POST['item_name'];
$data['item_number'] = $_POST['item_number'];
$data['payment_status'] = $_POST['payment_status'];
$data['payment_amount'] = $_POST['mc_gross'];
$data['payment_currency'] = $_POST['mc_currency'];
$data['txn_id'] = $_POST['txn_id'];
$data['receiver_email'] = $_POST['receiver_email'];
$data['payer_email'] = $_POST['payer_email'];
$data['custom'] = $_POST['custom'];
$pitem = $data['item_name'] ;
$pname = $data['custom'];
// post back to PayPal system to validate
$header = "POST /cgi-bin/webscr HTTP/1.1\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.sandbox.paypal.com', 443, $errno, $errstr, 30);
if (!$fp) {
} else {
fputs($fp, $header . $req);
while (!feof($fp)) {
$res = fgets ($fp, 1024);
if (strcmp($res, "VERIFIED") == 0) {
// Validate payment (Check unique txnid & correct price)
$valid_txnid = check_txnid($data['txn_id']);
$valid_price = check_price($data['payment_amount'], $data['item_number']);
// PAYMENT VALIDATED & VERIFIED!
if ($valid_txnid && $valid_price) {
$orderid = updatePayments($data);
// My code
$conn = new mysqli($host, $user, $pass, $db_name);
$sql = "SELECT * FROM players";
$result = $conn->query($sql);
if ($result->num_rows > 0) {
// output data
while($row = $result->fetch_assoc()) {
if($row["Username"]==$pname) {
if ($pitem == "500g") {
$newgold = 500 + $row["Gold"];
$sql = "UPDATE players SET Gold=".$newgold." WHERE Username='".$name."'";
}
if ($pitem == "2000g") {
$newgold = 2000 + $row["Gold"];
$sql = "UPDATE players SET Gold=".$newgold." WHERE Username='".$name."'";
}
if ($pitem == "25level") {
$sql = "UPDATE `players` SET `HeadArmor` = '25', `BodyArmor` = '21', `FootArmor` = '13', `GloveArmor` = '4', `Bow` = '6', `Arrows` = '4', `Xbow` = '5', `Bolts` = '2', `Shield` = '15', `OneH` = '16', `TwoH` = '16', `XP` = '19410', `Level` = '25' WHERE Username='".$name."'; ";
}
if ($pitem == "35level") {
$sql = "UPDATE `players` SET `HeadArmor` = '33', `BodyArmor` = '27', `FootArmor` = '17', `GloveArmor` = '5', `Bow` = '7', `Arrows` = '5', `Xbow` = '6', `Shield` = '19', `OneH` = '21', `TwoH` = '21', `XP` = '54872', `Level` = '35' WHERE Username='".$name."'; ";
}
if ($conn->query($sql) === TRUE) {
echo "Record updated successfully";
} else {
echo "Error updating record: " . $conn->error;
}
}
}
}
$conn->close();
if ($orderid) {
// Payment has been made & successfully inserted into the Database
} else {
// Error inserting into DB
// E-mail admin or alert user
// mail('user@domain.com', 'PAYPAL POST - INSERT INTO DB WENT WRONG', print_r($data, true));
}
} else {
// Payment made but data has been changed
// E-mail admin or alert user
}
} else if (strcmp ($res, "INVALID") == 0) {
// PAYMENT INVALID & INVESTIGATE MANUALY!
// E-mail admin or alert user
// Used for debugging
}
}
fclose ($fp);
}
?>
这可能与sql有关。