Ben devam edilmiş bir ödeme sonra PayPal ile geri arama yapmak için nasıl şimdi fazla 4 saat arandı.

The thing is, I have a site the sells tickets to a LAN Party, and the only way to pay is with PayPal.
Here is my PayPal buy button code:

<form target="paypal" action="https://www.sandbox.paypal.com/cgi-bin/webscr" method="post">
<input type="hidden" name="add" value="1">
<input type="hidden" name="cmd" value="_cart">
<input type="hidden" name="business" value="_MY_PAYPAL_EMAIL_">
<input type="hidden" name="item_number" value="<?php echo mktime(); ?>">
<input type="hidden" name="cn" value="<?php echo $_SESSION['userid']; ?>">
<input type="hidden" name="return" value="http://80.202.213.240/apps/tickets/buy/success/" />
<input type="hidden" name="cancel_return" value="http://80.202.213.240/apps/tickets/buy/cancelled/" />
<input type="hidden" name="notify_url" value="http://80.202.213.240/apps/tickets/buy/ipn/" />
<input type="hidden" name="lc" value="NO">
<input type="hidden" name="item_name" value="BitHack - Standard Ticket">
<input type="hidden" name="amount" value="100.00">
<input type="hidden" name="currency_code" value="NOK">
<input type="hidden" name="no_shipping" value="1">
<input type="hidden" name="button_subtype" value="Tickets">
<input type="hidden" name="add" value="1">
<input type="hidden" name="bn" value="PP-ShopCartBF:btn_cart_LG.gif:NonHostedGuest">
<input type="submit" value="Add to Cart" class="ticketShowButton submit" title="Payment via PayPal">

The info should then be inserted into a database, that part I have finished. Just need the callback system to work. Anyone know any good callback script examples?

BTW, bu özel girdileri kullanmak do mümkün mü?