[eluser]benjamin[/eluser]
Hi All,
I'm using PayPal's IPN, and whilst I'm aware that there is a CI library for it, I'm trying to understand something, and was hoping whether somebody could help me shed some light into this. If I use the CI library, requests are being sent and received (all OK). Now if I'm being playful, and simply create a controller (let's call it "paypal_ipn"), and re-direct my IPN to xyz/index.php/paypal_ipn/listener, then suddenyl paypal can no longer send any messages...However if I call the same URL from my browser, everything works fine (i.e. no syntax errors etc)...I guess there is a fundamental CI principle that I don't understand / missed? Thanks in advance.
Controller:
Code:
<?php
class PayPal_IPN extends CI_Controller {
/**
* Constructor.
*
* @since 1.0
*/
function __construct() {
parent::__construct();
}
/**
* The IPN listener. Processes IPN events.
*
* @since 1.0
*/
function listener() {
// read the post from PayPal system and add 'cmd'
$req = 'cmd=_notify-validate';
foreach ($_POST as $key => $value) {
$value = urlencode(stripslashes($value));
$req .= "&$key=$value";
}
// post back to PayPal system to validate
$header .= "POST /cgi-bin/webscr HTTP/1.0\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.paypal.com', 443, $errno, $errstr, 30);
// assign posted variables to local variables
$item_name = $_POST['item_name'];
$item_number = $_POST['item_number'];
$payment_status = $_POST['payment_status'];
$payment_amount = $_POST['mc_gross'];
$payment_currency = $_POST['mc_currency'];
$txn_id = $_POST['txn_id'];
$receiver_email = $_POST['receiver_email'];
$payer_email = $_POST['payer_email'];
if (!$fp) {
// HTTP ERROR
} else {
fputs($fp, $header . $req);
while (!feof($fp)) {
$res = fgets($fp, 1024);
if (strcmp($res, "VERIFIED") == 0) {
// confirm and process order...foo bar
} else if (strcmp($res, "INVALID") == 0) {
// log for manual investigation
}
}
fclose($fp);
}
}
}
?>
