PayPal IPN - having trouble accessing session data?
- by Martin Bean
Hello, all. I'm having issues with PayPal IPN integration where it seems I cannot get my solution to read session variables.
Basically, in my shop module script, I store the customer's details as provided by PayPal to an orders table. However, I also wish to save products ordered in a transaction to a separate table linked by the order ID.
However, it's the second part of the script that's not working, where I loop through the products in the session and then save them to the orders_products table.
Is there a reason why the session data not being read?
The code within shop.php is as follows:
if ($paypal->validate_ipn()) {
$name = $paypal->ipn_data['address_name'];
$street_1 = $paypal->ipn_data['address_street'];
$street_2 = "";
$city = $paypal->ipn_data['address_city'];
$state = $paypal->ipn_data['address_state'];
$zip = $paypal->ipn_data['address_zip'];
$country = $paypal->ipn_data['address_country'];
$txn_id = $paypal->ipn_data['txn_id'];
$sql = "INSERT INTO orders (name, street_1, street_2, city, state, zip, country, txn_id)
VALUES (:name, :street_1, :street_2, :city, :state, :zip, :country, :txn_id)";
$smt = $this->pdo->prepare($sql);
$smt->bindParam(':name', $name, PDO::PARAM_STR);
$smt->bindParam(':street_1', $street_1, PDO::PARAM_STR);
$smt->bindParam(':street_2', $street_2, PDO::PARAM_STR);
$smt->bindParam(':city', $city, PDO::PARAM_STR);
$smt->bindParam(':state', $state, PDO::PARAM_STR);
$smt->bindParam(':zip', $zip, PDO::PARAM_STR);
$smt->bindParam(':country', $country, PDO::PARAM_STR);
$smt->bindParam(':txn_id', $txn_id, PDO::PARAM_INT);
$smt->execute();
// save products to orders relationship
$order_id = $this->pdo->lastInsertId();
// $cart = $this->session->get('cart');
$cart = $this->session->get('cart');
foreach ($cart as $product_id => $item) {
$quantity = $item['quantity'];
$sql = "INSERT INTO orders_products (order_id, product_id, quantity) VALUES ('$order_id', '$product_id', '$quantity')";
$res = $this->pdo->query($sql);
}
$this->session->del('cart');
mail('[email protected]', 'IPN result', 'IPN was successful on wrestling-wear.com');
} else {
mail('[email protected]', 'IPN result', 'IPN failed on wrestling-wear.com');
}
And I'm using the PayPal IPN class for PHP as found here: http://www.micahcarrick.com/04-19-2005/php-paypal-ipn-integration-class.html, but the contents of the validate_ipn() method is as follows:
public function validate_ipn()
{
$url_parsed = parse_url($this->paypal_url);
$post_string = '';
foreach ($_POST as $field => $value) {
$this->ipn_data[$field] = $value;
$post_string.= $field.'='.urlencode(stripslashes($value)).'&';
}
$post_string.= "cmd=_notify-validate"; // append IPN command
// open the connection to PayPal
$fp = fsockopen($url_parsed[host], "80", $err_num, $err_str, 30);
if (!$fp) {
// could not open the connection. If logging is on, the error message will be in the log
$this->last_error = "fsockopen error no. $errnum: $errstr";
$this->log_ipn_results(false);
return false;
} else {
// post the data back to PayPal
fputs($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)) {
$this->ipn_response.= fgets($fp, 1024);
}
fclose($fp); // close connection
}
if (eregi("VERIFIED", $this->ipn_response)) {
// valid IPN transaction
$this->log_ipn_results(true);
return true;
} else {
// invalid IPN transaction; check the log for details
$this->last_error = 'IPN Validation Failed.';
$this->log_ipn_results(false);
return false;
}
}
