paypal ipn script not editing database after payment

[dolcezza]

This is the page that paypal returns to after payment

it's supposed to change the database foeld "verified" to 1

I am pretty new at this and would appreciate any help.

 

<?php
require_once("db_connect.php");

// 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 ('www.sandbox.paypal.com', 80, $errno, $errstr, 30);
//$fp = fsockopen ('www.paypal.com', 80, $errno, $errstr, 30);

// assign posted variables to local variables
$item_name = $_POST['item_name'];
$caregivers_id = $_POST['custom'];
$payment_status = $_POST['payment_status'];
$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 ($res, "VERIFIED") == 0) {
// check the payment_status is Completed
 if (strcmp ($payment_status, "Completed") == 0) {
	// check that txn_id has not been previously processed
 	// check that receiver_email is your Primary PayPal email
	  if (strcmp($receiver_email,"digita_1197353879_biz@gmail.com")!=0)
	     {
	     $bad_txn = 1;
	     $reason .= "Invalid receiver email address<br>";
	     }
// check that payment_amount/payment_currency are correct
		if ($bad_txn == 1) {
			//send email error message
			mail($payer_email, "An Error Occurred...", "Dear Customer,\n an error occurred while PayPal was processing your order. It will be investigated by a human at the earliest opportunity.\n\nWe apologise for any inconvenience.", "From: ipn@caregivingsocal.com\nReply-To: sales@caregivingsocal.com");

				mail($receiver_email, "Invalid PayPal TX...", "An invalid transaction requires your attention. $reason");
} else {
	//change verified value
$update = mysql_query("UPDATE caregivers SET verified = 1 WHERE caregivers_id = '$caregivers_id' LIMIT 1") or die(mysql_error());

 $message .= "Dear Customer,\n Thankyou for your order.\n\nYour listing will be posted shortly.  If you have any problems, please contact us: \n\nsales\@caregivingsocal.com";

mail($payer_email, "Thank You...", $message, "From: ipn@caregivingsocal.com\nReply-To: sales@caregivingsocal.com");
} else if {
	 $message .= "Dear Customer,\n Thankyou for your order.\n\nYour listing will be posted as soon as the funds have cleared.\n\nThankyou \n\nsales\@caregivingsocal.com";

	mail($payer_email, "Thank You...", $message, "From: ipn@caregivingsocal.com\nReply-To: sales@caregivingsocal.com");

	mail($receiver_email, "Incomplete PayPal TX...", "An incomplete transaction requires your attention.");

}
}
else if (strcmp ($res, "INVALID") == 0) {
// log for manual investigation
}
}
fclose ($fp);
}
?>


?>