Bravo List - paypal ipn

how do i deal with subscription payments via the paypal.php so that members get correct credits currently the paypal.php only deals with donations and not subscriptions
Code:

require "include/bittorrent.php";

require_once("ircbot.php");        

dbconn();





$donb=0;

// 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.paypal.com', 80, $errno, $errstr, 30);

// assign posted variables to local variables

$id = mysql_insert_id();

$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'];

$clid = $_POST['custom'];

$payment_type = $_POST['payment_type'];

$ip =  $_SERVER['REMOTE_ADDR'];

$trans_id = $_POST['txn_id'];

$os2 = $_POST['option_selection2'];

$payment_gross = $_POST['mc_gross'];

$payment_fee = $_POST['payment_fee'];

$os1 = $_POST['option_selection1'];

if (!$txn_id) die; 

if (!$clid) die;

if ($receiver_email != "****@*****") die; #Your Paypal Emial here



// block pending echecks. paypal posts payments again when echecks clear, blocks double credits.

if ($payment_type == "echeck" && $payment_status == "Pending") die;



if (!$fp){

}

else

{

fputs ($fp, $header . $req);

while (!feof($fp))

{

$res = fgets ($fp, 1024);

if (strcmp ($res, "VERIFIED") == 0)

{

// process payment



///Sort Upload and Donor time amounts

if ($payment_amount == 2)

{$days = 1*1;}

if ($payment_amount == 5)

{$days = 1*2;}

elseif ($payment_amount == 10)

{$days = 1*4;}

elseif ($payment_amount == 20)

{$days = 1*8;}

elseif ($payment_amount == 25)

{$days = 1*16;}

elseif ($payment_amount == 40)

{$days = 1*32;}

elseif ($payment_amount == 30)

{$days = 1*52;}

elseif ($payment_amount == 45)

{$days = 1*704;}

else {$days = 1*1;}



//set donor upload upgrade

if ($payment_amount == 2)

{$donb = 5368709120; }

if ($payment_amount == 5)

{$donb = 10737418240; }

elseif ($payment_amount == 10)

{$donb = 21474836480; }

elseif ($payment_amount == 20)

{$donb = 42949672960; }

elseif ($payment_amount == 25)

{$donb = 128849018880; }

elseif ($payment_amount == 40)

{$donb = 171798691840; }

elseif ($payment_amount == 30)

{$donb = 257698037760; }

elseif ($payment_amount == 45)

{$donb = 322122547200; }

else {

$donb = 1073741824*$payment_amount;}



//Set User Invites

if ($payment_amount == 2)

{$invites = 1; }

if ($payment_amount == 5)

{$invites = 2; }

elseif ($payment_amount == 10)

{$invites = 4; }

elseif ($payment_amount == 20)

{$invites = 6; }

elseif ($payment_amount == 25)

{$invites = 8; }

elseif ($payment_amount == 40)

{$invites = 10; }

elseif ($payment_amount == 30)

{$invites = 12; }

elseif ($payment_amount == 45)

{$invites = 14; }

else {

$invites = 0;}



//Set User Seedbonus

if ($payment_amount == 2)

{$seedbonus = 1000; }

if ($payment_amount == 5)

{$seedbonus = 15625; }

elseif ($payment_amount == 10)

{$seedbonus = 31250; }

elseif ($payment_amount == 20)

{$seedbonus = 62500; }

elseif ($payment_amount == 25)

{$seedbonus = 125000; }

elseif ($payment_amount == 40)

{$seedbonus = 250000; }

elseif ($payment_amount == 30)

{$seedbonus =500000; }

elseif ($payment_amount == 45)

{$seedbonus = 1000000; }

else {

$seedbonus = 0;}



//get user information from DB

$query = "SELECT * FROM users WHERE id='".$clid."'";

$result = mysql_query($query);

$row = mysql_fetch_array($result);

$username = $row['username'];

$old=date($row['donoruntil']);

$class = $row['class'];

$dona = $row['uploaded'];



//Set class to VIP if lower then VIP

if ($class <= 32)

{$class = 32;}

$r = @mysql_query("SELECT * FROM users WHERE id=$clid") or sqlerr();

$user = mysql_fetch_array($r) or bark("No user with ID.");

//Reset download upload post and reset to zero H&R's

$query = "UPDATE users SET donor='yes', downloadpos='yes', class=$class, timeswarned = 0,warned ='no',invites=invites+$invites,seedbonus=seedbonus+$seedbonus WHERE id='".$clid."'";

$result = mysql_query("$query");





//Get Donor time if already some left from before

If ($old<>"0000-00-00 00:00:00")

{

$old1=strtotime($old)- gmtime();

$donateuntil = get_date_time((gmtime() + $days * 604800) +$old1);

}

else

{$donateuntil = get_date_time(gmtime() + $days * 604800);}

//add Upload bonus for amount given at 1Gb per ?1

$bonus = $donb + $dona;

$donordif =strtotime($donateuntil)- gmtime();

//add to mod comment for staff to check if payment made via here

$modcomment = gmdate("d-m-Y [H:i]") . " Donation Made Auto Promoted to Vip.\n". $modcomment;

//$modcomment = gmdate("d-m-Y H:i") . " Donation Made Auto Promoted to Vip";

$modcom = sqlesc($modcomment);

//update users total and bonus totals

$query = "UPDATE users SET uploaded='".$bonus."', modcomment = CONCAT($modcom,modcomment), donoruntil='$donateuntil', donated=$payment_amount,total_donated=total_donated+$payment_amount WHERE id='".$clid."'";

$result = mysql_query($query);



//Send Message to Site Owners

$sysop = mysql_query("SELECT id FROM users WHERE id=9") or sqlerr(__FILE__, __LINE__); 

while ($sysopid = mysql_fetch_assoc($sysop)){

//$sysopmsg = "User: ".$username." | Amount : $$payment_amount | Email: $payer_email";

//new_msg(0, $sysopid['id'], $sysopmsg);

}

}}



$day = date("d");

$month = date("m");

$year = date("Y");

$time = time();

//Update users User Level.                                

$query = "INSERT into donations 

(ip,txn_id,name,donation,fees,dnuid,time,username)

VALUES

('$ip','$trans_id','$os2','$payment_gross','$payment_fee','$os1','$time','$username')";

$result = mysql_query($query);

//bot signup end

/** shoutbox announce new signup **/

$message = "Thanks  ".$username." for supporting GT & adding £$payment_amount to the site fund ";

autoshouts($message);

/** end **/

/** irc announce new donation **/

$msgs = array();

$msgs[] = "\0036$username Added \0038£$payment_amount To The Site Fund";

IRCSendMsg($msgs);

/** end **/



header("Location: http://****/");



fclose ($fp);

}

stdfoot();

?>
Thanks in advance