php - 背景脚本错误

Question

我的目标是调试IPN或页面外用尽的任何脚本。通常，错误很容易处理，但是当它们在后台时，很难做到。当用户向 Paypal 付款时，脚本本身会被抵消。我无法在该页面上进行调试。

当您离开网站时，如何将错误记录在页面上(如本 Paypal 示例所示)。
到目前为止，我的想法

我已经添加
ini_set('log_errors', true);
ini_set('error_log', dirname(__FILE__).'/ipn_errors.log');
与名为ipn_errors.log的文件位于与我要调试的页面相同的文件夹中。

<?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";
$url = "https://www.paypal.com/cgi-bin/webscr";
$curl_result=$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
if (strpos($curl_result, "VERIFIED") !== false) {
    $req .= "\n\nPaypal Verified OK";
} else {
    $req .= "\n\nData NOT verified from Paypal!";
    mail("chris@test.com", "IPN interaction not verified", "$req", "From: chris@test.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 != "chris@test.com") {
    $message = "Investigate why and how receiver email is wrong. Email = " . $_POST['receiver_email'] . "\n\n\n$req";
    mail("chris@test.com", "Receiver Email is incorrect", $message, "From: chris@test.com" );
    exit(); // exit script
}
// Check number 2 ------------------------------------------------------------------------------------------------------------
if ($_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
}
// Connect to database ------------------------------------------------------------------------------------------------------
require_once 'db_conx.php';
// Check number 3 ------------------------------------------------------------------------------------------------------------
//
$this_txn = $_POST['txn_id'];
$sql = "SELECT id FROM transactions WHERE txn_id='$this_txn' LIMIT 1";
$query = mysqli_query($db_conx, $sql);
$numRows = mysqli_num_rows($query);
//
if ($numRows > 0) {
    $message = "Duplicate transaction ID occured so we killed the IPN script. \n\n\n$req";
    mail("chris@test.com", "Duplicate txn_id in the IPN system", $message, "From: chris@test.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 
    $sqlCommand = "SELECT price FROM products WHERE id='$product_id' LIMIT 1";
    $query = mysqli_query($db_conx, $sqlCommand);
    while($row = mysqli_fetch_array($query)){
        $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['payment_gross'] . " != $fullAmount \n\n\n$req";
        mail("chris@test.com", "Price Jack or Bad Programming", $message, "From: chris@test.com" );
        exit(); // exit script
} 

//
//



// END ALL SECURITY CHECKS NOW IN THE DATABASE IT GOES ------------------------------------
////////////////////////////////////////////////////
// Homework - Examples of assigning local variables from the POST variables
$txn_id = $_POST['txn_id'];
$payer_email = $_POST['payer_email'];
$custom = $_POST['custom'];
$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'];

 //
require_once 'db_conx.php';

//$username .= substr($email, 0, strpos($email, '@'));
$user_name = $_POST['first_name'];
// Place the transaction into the database   
   $sql = "INSERT INTO transactions (product_id_array, email, first_name, last_name, payment_date, mc_gross, payment_currency, txn_id, receiver_email, payment_type, payment_status, txn_type, payer_status, address_street, address_city, address_state, address_zip, address_country, address_status, notify_version, verify_sign, payer_id, mc_currency, mc_fee, ip, username)       
       VALUES('$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','$mc_fee','$ip','$user_name')";
$query = mysqli_query($db_conx, $sql);//or die (mysqli_error($myConnection)) add this before ; for error checking
$to      = $payer_email;  
$subject = '| Login Credentials';  
$message = ' 

Your officially all ready to go. To login use the information below.

Your account login information 
------------------------- 
Email: '.$payer_email.' 
Password: '.$password.' 
------------------------- 

You can now login at https://www.test.com/signin.php';  
$headers = 'From:noreply@test.com' . "\r\n";  

mail($to, $subject, $message, $headers);  
// Mail yourself the details
mail("chris@test.com", "NORMAL IPN RESULT YAY MONEY!", $req, "From: chris@test.com");

?>

Answer 1

ipn侦听器由任意事务触发，尽管不完整，无效等。在ipn侦听器本身中，您可以指定应该处理的内容，无论是错误记录还是将错误邮寄到指定的电子邮件地址。我已经实现了ipn处理程序来更新有效事务中的数据库值