Hello,
I'm using paypal Instant payment notifications but each time I receive a
notification and do a HTTP connection back to the
paypal server it comes back with INVALID...I based the code on the paypal
sample
show below....
there code has bug on the Header line...as $header is not set, so the dot
needs to be removed.
anyone else been able to get IPN working with PHP?
all the other language examples use HTTPS?
does this work with HTTP?
Cheers
Bob
<?php
// read post from PayPal system and add 'cmd'
$postvars = array();
while (list ($key, $value) = each ($HTTP_POST_VARS)) {
$postvars[] = $key;
}
$req = 'cmd=_notify-validate';
for ($var = 0; $var < count ($postvars); $var++) {
$postvar_key = $postvars[$var];
$postvar_value = $$postvars[$var];
$req .= "&" . $postvar_key . "=" . urlencode ($postvar_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 ("www.paypal.com", 80, $errno, $errstr, 30);
// assign posted variables to local variables
// note: additional IPN variables also available -- see IPN documentation
$item_name = $HTTP_POST_VARS['item_name'];
$receiver_email = $HTTP_POST_VARS['receiver_email'];
$item_number = $HTTP_POST_VARS['item_number'];
$invoice = $HTTP_POST_VARS['invoice'];
$payment_status = $HTTP_POST_VARS['payment_status'];
$payment_gross = $HTTP_POST_VARS['payment_gross'];
$txn_id = $HTTP_POST_VARS['txn_id'];
$payer_email = $HTTP_POST_VARS['payer_email'];
if (!$fp) {
// HTTP ERROR
echo "$errstr ($errno)";
} else {
fputs ($fp, $header . $req);
while (!feof($fp)) {
$res = fgets ($fp, 1024);
if (strcmp ($res, "VERIFIED") == 0) {
// check the payment_status=Completed
// check that txn_id has not been previously processed
// check that receiver_email is an email address in your PayPal account
// process payment
}
else if (strcmp ($res, "INVALID") == 0) {
// log for manual investigation
}
}
fclose ($fp);
}
?>
