PHP paypal IPN code

[nick]

Hey guys. Here is the code for paypal IPN thing.

checkout.php

<?php
include("Includes/functions.php");
$dbc = dbconnect();
$pageid = $QUERY_STRING;
if ($QUERY_STRING == "")
{
$pageid = 1;
}
$arr = explode("x", $pageid);
$hid = $arr[0];
$catid = $arr[1];
$site_url = "http://www.hehehahahaha.com";
$order_total = 10;
$order_total = number_format($order_total, 2, ".", ",");
$order_id = "$hid" . "x" . "$catid";

$r = mysql_query("Select * from tblhost WHERE HID = '$hid'");
while ( $row = mysql_fetch_array ( $r ) )
{
$my_sFirstName = $row['User'];
$my_sLastName = $row['User'];
$hemail = $row['Email'];
$hname = $row['Host'];
}
$my_clientEmail = $hemail;
$business_paypal = "xxxxx@xxxxx.com";
$currency_id = "USD";
$sdate = time();
$r = mysql_query("INSERT INTO tblsponser (HID, CID, Sdate) VALUES ('$hid', '$catid', '$sdate')");


//redirect to paypal
header("location:https://www.paypal.com/xclick?business=$business_paypal&item_name=$hname$order_id&first_name=$my_sFirstName&last_name=$my_sLastName&email=$my_clientEmail&item_number=1&custom=$hid&amount=$order_total&currency_code=$currency_id&notify_url=$site_url/notify.php&return=$site_url/thankyou.php");
?>

Now for the IPN script:
notify.php

<?php

	// Assign posted variables to local variables
	$receiver_email = $_POST['receiver_email'];
	$payer_email = $_POST['payer_email'];
	$payer_status = $_POST['payer_status'];
	$payment_gross = $_POST['payment_gross'];
	$payment_fee = $_POST['payment_fee'];
	$payment_date = $_POST['payment_date'];
	$payment_type = $_POST['payment_type'];
	$payment_status = $_POST['payment_status'];
	$pending_reason = $_POST['pending_reason'];
	$txn_id = $_POST['txn_id'];
	$txn_type = $_POST['txn_type'];
	
	$custom = $_POST['custom'];

	if ($_REQUEST['payment_status'] == "Completed" || $_REQUEST['payment_status'] == "Pending") {

//Query for the payment recieved

include("Includes/functions.php");

$dbc = dbconnect();

$hid = $custom;



$r = mysql_query("Update tblsponser SET Payment = 'Y' WHERE HID = '$hid'");

////////////////////////////////////////


}
?>

Enjoy and have fun.