【发布时间】：2015-09-21 18:05:15
【问题描述】：
我是 paypal 和 php 的菜鸟，所以我在线学习了这个教程：https://www.developphp.com/video/PHP/PayPal-IPN-PHP-Instant-Payment-Notification-Script
我的问题是我的 IPN 结果都很好，但是我的 ipn.php 脚本无法连接到我的数据库，因此我可以存储结果。
IPN.PHP 代码
<?php
//connect to the database
include_once ('includes/connect_to_mysql.php');
// Check to see there are posted variables coming into the script
if ($_SERVER['REQUEST_METHOD'] != "POST") die ("No Post Variables");
// Initialize the $req variable and add CMD key value pair
$req = 'cmd=_notify-validate';
// Read the post from PayPal
foreach ($_POST as $key => $value) {
$value = urlencode(stripslashes($value));
$req .= "&$key=$value";
}
// Now Post all of that back to PayPal's server using curl, and validate everything with PayPal
// We will use CURL instead of PHP for this for a more universally operable script (fsockopen has issues on some environments)
$url = "https://www.sandbox.paypal.com/cgi-bin/webscr"; //USE SANDBOX ACCOUNT TO TEST WITH
//$url = "https://www.paypal.com/cgi-bin/webscr"; //LIVE ACCOUNT
$curl_result=$curl_err='';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,$url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $req);
curl_setopt($ch, CURLOPT_HTTPHEADER, array("Content-Type: application/x-www-form-urlencoded", "Content-Length: " . strlen($req)));
curl_setopt($ch, CURLOPT_HEADER , 0);
curl_setopt($ch, CURLOPT_VERBOSE, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_TIMEOUT, 30);
$curl_result = @curl_exec($ch);
$curl_err = curl_error($ch);
curl_close($ch);
$req = str_replace("&", "\n", $req); // Make it a nice list in case we want to email it to ourselves for reporting
// Check that the result verifies with PayPal
if (strpos($curl_result, "VERIFIED") !== false) {
$req .= "\n\nPaypal Verified OK";
mail("email@gmail.com", "Verified OK", "$req", "From: email@gmail.com" );
} else {
$req .= "\n\nData NOT verified from Paypal!";
mail("email@gmail.com", "IPN interaction not verified", "$req", "From: email@gmail.com" );
exit();
}
/* CHECK THESE 4 THINGS BEFORE PROCESSING THE TRANSACTION, HANDLE THEM AS YOU WISH
1. Make sure that business email returned is your business email
2. Make sure that the transaction’s payment status is “completed”
3. Make sure there are no duplicate txn_id
4. Make sure the payment amount matches what you charge for items. (Defeat Price-Jacking) */
// Check Number 1 ------------------------------------------------------------------------------------------------------------
$receiver_email = $_POST['receiver_email'];
if ($receiver_email != "email-facilitator@hotmail.com") {
$message = "Investigate why and how receiver_email variable sent back by PayPal does not match the buisness email set in cart.php. Email = " . $_POST['receiver_email'] . "\n\n\n$req";
mail("email@gmail.com", "Receiver Email is incorrect", $message, "From: email@gmail.com" );
exit(); // exit script
}
// Check number 2 ------------------------------------------------------------------------------------------------------------
if ($_POST['payment_status'] != "Completed") {
// Handle how you think you should if a payment is not complete yet, a few scenarios can cause a transaction to be incomplete
$message = "Investigate why payment was not completed. Email = " . $_POST['receiver_email'] . "\n\n\n$req";
mail("email@gmail.com", "Payment not complete", $message, "From: email@gmail.com" );
exit(); // exit script
}
// Check number 3 ------------------------------------------------------------------------------------------------------------
$this_txn = $_POST['txn_id'];
$sql = mysqli_query($conn, "SELECT id FROM transactions WHERE txn_id='$this_txn' LIMIT 1"); //check to see transaction id exists in the DB
$numRows = mysqli_num_rows($sql);
if ($numRows == 0) {
$message = "Duplicate transaction ID occured so we killed the IPN script. \n\n\n$req";
mail("email@gmail.com", "Duplicate transaction ID(txn_id) in the IPN system", $message, "From: email@gmail.com" );
exit(); // exit script
}
// Check number 4 ------------------------------------------------------------------------------------------------------------
$product_id_string = $_POST['custom'];
$product_id_string = rtrim($product_id_string, ","); // remove last comma
// Explode the string, make it an array, then query all the prices out, add them up, and make sure they match the payment_gross amount
$id_str_array = explode(",", $product_id_string); // Uses Comma(,) as delimiter(break point)
$fullAmount = 0;
foreach ($id_str_array as $key => $value) {
$id_quantity_pair = explode("-", $value); // Uses Hyphen(-) as delimiter to separate product ID from its quantity
$product_id = $id_quantity_pair[0]; // Get the product ID
$product_quantity = $id_quantity_pair[1]; // Get the quantity
$sql = mysqli_query($conn, "SELECT price FROM products WHERE id='$product_id' LIMIT 1");
while($row = mysqli_fetch_array($sql)){
$product_price = $row["price"];
}
$product_price = $product_price * $product_quantity;
$fullAmount = $fullAmount + $product_price;
}
$fullAmount = number_format($fullAmount, 2);
$grossAmount = $_POST['mc_gross'];
if ($fullAmount != $grossAmount) {
$message = "Possible Price Jack: " . $_POST['mc_gross'] . " != $fullAmount \n\n\n$req";
mail("email@gmail.com", "Price Jack or Bad Programming", $message, "From: email@gmail.com" );
exit(); // exit script
}
// END ALL SECURITY CHECKS NOW IN THE DATABASE IT GOES ------------------------------------
////////////////////////////////////////////////////
// Assign local variables from the POST PayPal variables
$custom = $_POST['custom'];
$payer_email = $_POST['payer_email'];
$first_name = $_POST['first_name'];
$last_name = $_POST['last_name'];
$payment_date = $_POST['payment_date'];
$mc_gross = $_POST['mc_gross'];
$payment_currency = $_POST['payment_currency'];
$txn_id = $_POST['txn_id'];
$receiver_email = $_POST['receiver_email'];
$payment_type = $_POST['payment_type'];
$payment_status = $_POST['payment_status'];
$txn_type = $_POST['txn_type'];
$payer_status = $_POST['payer_status'];
$address_street = $_POST['address_street'];
$address_city = $_POST['address_city'];
$address_state = $_POST['address_state'];
$address_zip = $_POST['address_zip'];
$address_country = $_POST['address_country'];
$address_status = $_POST['address_status'];
$notify_version = $_POST['notify_version'];
$verify_sign = $_POST['verify_sign'];
$payer_id = $_POST['payer_id'];
$mc_currency = $_POST['mc_currency'];
$mc_fee = $_POST['mc_fee'];
// Place the transaction into the database
$sql = mysqli_query($conn, "INSERT INTO transactions (product_id_array, payer_email, first_name, last_name, payment_date, mc_gross, payment_currency, txn_id, receiver_email, payment_type, payment_status, txn_type, payer_status, address_street, address_city, address_state, address_zip, address_country, address_status, notify_version, verify_sign, payer_id, mc_currency, mc_fee)
VALUES('$custom','$payer_email','$first_name','$last_name','$payment_date','$mc_gross','$payment_currency','$txn_id','$receiver_email','$payment_type','$payment_status','$txn_type','$payer_status','$address_street','$address_city','$address_state','$address_zip','$address_country','$address_status','$notify_version','$verify_sign','$payer_id','$mc_currency','$mc_fee')") or die ("unable to execute the query");
mysqli_close();
// Mail yourself the details
mail("email@gmail.com", "NORMAL IPN RESULT - Transaction Entered", $req, "From: email@gmail.com");
?>
在测试时，我给自己发送了一封电子邮件，其中包含 IPN 结果，这些结果被返回为已验证且 payment_status=Completed。
这是 IPN 输出：
cmd=_notify-validate
mc_gross=9.99
protection_eligibility=Eligible
address_status=confirmed
item_number1=
payer_id=BDK3Z8X34KY3Y
tax=0.00
address_street=1+Maire-Victorin
payment_date=13%3A51%3A16+Jul+06%2C+2015+PDT
payment_status=Completed
charset=windows-1252
address_zip=M5A+1E1
mc_shipping=0.00
mc_handling=0.00
first_name=test
mc_fee=0.59
address_country_code=CA
address_name=test+buyer
notify_version=3.8
custom=9-1%2C
payer_status=verified
business=email-facilitator%40hotmail.com
address_country=Canada
num_cart_items=1
mc_handling1=0.00
address_city=Toronto
verify_sign=A2YnYs6LuOd-R8BHIdbWTA6xHgalAu.DiwxDdytu5YxLaIvebtzbprOA
payer_email=email-buyer%40hotmail.com
mc_shipping1=0.00
tax1=0.00
txn_id=6HE31475W2614530U
payment_type=instant
last_name=buyer
address_state=Ontario
item_name1=Leather+Pouch
receiver_email=email-facilitator%40hotmail.com
payment_fee=
quantity1=1
receiver_id=SF4CCTMHQJMF8
txn_type=cart
mc_gross_1=9.99
mc_currency=CAD
residence_country=CA
test_ipn=1
transaction_subject=9-1%2C
payment_gross=
ipn_track_id=a7531c2eb1cec
Paypal Verified OK
我进一步调试了代码，因为我的选择语句没有返回任何值，这表明与数据库的连接失败。
谁能帮我解释为什么我无法使用 ipn.php 代码连接到我的数据库？我网站的所有其他页面都将使用相同的代码连接，除了这个页面，所以我只能认为它与 PayPal 调用这个页面而不是我的服务器有关。
这是我在connect_to_mysql.php中的连接代码：
<?php
/* PHP Database Connection */
$servername = "localhost";
$username = "user";
$password = "passs";
$database = "database";
// Create connection
$conn = mysqli_connect($servername, $username, $password, $database);
// Check connection
if (!$conn) {
die("Connection failed: " . mysqli_connect_error());
}
echo "Connected successfully";
?>
【问题讨论】：
-
mysql 已弃用。使用 mysqli 或 PDO。
-
好的，谢谢。我打算在一切都设置好并正常工作后切换到 mysqli，以免使调试过程复杂化。
标签： php mysql database paypal paypal-ipn