Ok ho trovato, adesso in pratica devo mettere il codice nel mio script giusto?

PS:
Codice PHP:

<?php




/////////////////////////////////////////////////
/////////////Begin Script below./////////////////
/////////////////////////////////////////////////

// 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";

$fp fsockopen ('ssl://www.paypal.com'443$errno$errstr30);


// assign posted variables to local variables
$item_name $_POST['item_name'];
$business $_POST['business'];
$item_number $_POST['item_number'];
$payment_status $_POST['payment_status'];
$mc_gross $_POST['mc_gross'];
$payment_currency $_POST['mc_currency'];
$txn_id $_POST['txn_id'];
$receiver_email $_POST['receiver_email'];
$receiver_id $_POST['receiver_id'];
$quantity $_POST['quantity'];
$num_cart_items $_POST['num_cart_items'];
$payment_date $_POST['payment_date'];
$first_name $_POST['first_name'];
$last_name $_POST['last_name'];
$payment_type $_POST['payment_type'];
$payment_status $_POST['payment_status'];
$payment_gross $_POST['payment_gross'];
$payment_fee $_POST['payment_fee'];
$settle_amount $_POST['settle_amount'];
$memo $_POST['memo'];
$payer_email $_POST['payer_email'];
$txn_type $_POST['txn_type'];
$payer_status $_POST['payer_status'];
$address_street $_POST['address_street'];
$address_city $_POST['address_city'];
$address_state $_POST['address_state'];
$address_zip $_POST['address_zip'];
$address_country $_POST['address_country'];
$address_status $_POST['address_status'];
$item_number $_POST['item_number'];
$tax $_POST['tax'];
$option_name1 $_POST['option_name1'];
$option_selection1 $_POST['option_selection1'];
$option_name2 $_POST['option_name2'];
$option_selection2 $_POST['option_selection2'];
$for_auction $_POST['for_auction'];
$invoice $_POST['invoice'];
$custom $_POST['custom'];
$notify_version $_POST['notify_version'];
$verify_sign $_POST['verify_sign'];
$payer_business_name $_POST['payer_business_name'];
$payer_id =$_POST['payer_id'];
$mc_currency $_POST['mc_currency'];
$mc_fee $_POST['mc_fee'];
$exchange_rate $_POST['exchange_rate'];
$settle_currency  $_POST['settle_currency'];
$parent_txn_id  $_POST['parent_txn_id'];
$pending_reason $_POST['pending_reason'];
$reason_code $_POST['reason_code'];


// subscription specific vars

$subscr_id $_POST['subscr_id'];
$subscr_date $_POST['subscr_date'];
$subscr_effective  $_POST['subscr_effective'];
$period1 $_POST['period1'];
$period2 $_POST['period2'];
$period3 $_POST['period3'];
$amount1 $_POST['amount1'];
$amount2 $_POST['amount2'];
$amount3 $_POST['amount3'];
$mc_amount1 $_POST['mc_amount1'];
$mc_amount2 $_POST['mc_amount2'];
$mc_amount3 $_POST['mcamount3'];
$recurring $_POST['recurring'];
$reattempt $_POST['reattempt'];
$retry_at $_POST['retry_at'];
$recur_times $_POST['recur_times'];
$username $_POST['username'];
$password $_POST['password'];

//auction specific vars

$for_auction $_POST['for_auction'];
$auction_closing_date  $_POST['auction_closing_date'];
$auction_multi_item  $_POST['auction_multi_item'];
$auction_buyer_id  $_POST['auction_buyer_id'];



//DB connect creds and email 
$notify_email =  "admin@top-zone.net";         //email address to which debug emails are sent to
$DB_Server "localhost"//your MySQL Server
$DB_Username ""//your MySQL User Name
$DB_Password ""//your MySQL Password
$DB_DBName ""//your MySQL Database Name


if (!$fp) {
// HTTP ERROR
} else {
fputs ($fp$header $req);
while (!
feof($fp)) {
$res fgets ($fp1024);
if (
strcmp ($res"VERIFIED") == 0) {



//create MySQL connection
$Connect = @mysql_connect($DB_Server$DB_Username$DB_Password)
or die(
"Couldn't connect to MySQL:
mysql_error() . "
mysql_errno());


//select database
$Db = @mysql_select_db($DB_DBName$Connect)
or die(
"Couldn't select database:
mysql_error(). "
mysql_errno());


$fecha date("m")."/".date("d")."/".date("Y");
$fecha date("Y").date("m").date("d");

//check if transaction ID has been processed before
$checkquery "select txnid from paypal_payment_info where txnid='".$txn_id."'";
$sihay mysql_query($checkquery) or die("Duplicate txn id check query failed:
mysql_error() . "
mysql_errno());
$nm mysql_num_rows($sihay);
if (
$nm == 0){

//execute query



    
if ($txn_type == "cart"){
    
$strQuery "insert into paypal_payment_info(paymentstatus,buyer_email,firstname,lastname,street,city,state,zipcode,country,mc_gross,mc_fee,memo,paymenttype,paymentdate,txnid,pendingreason,reasoncode,tax,datecreation) values ('".$payment_status."','".$payer_email."','".$first_name."','".$last_name."','".$address_street."','".$address_city."','".$address_state."','".$address_zip."','".$address_country."','".$mc_gross."','".$mc_fee."','".$memo."','".$payment_type."','".$payment_date."','".$txn_id."','".$pending_reason."','".$reason_code."','".$tax."','".$fecha."')";

     
$result mysql_query($strQuery) or die("Cart - paypal_payment_info, Query failed:
mysql_error() . "
mysql_errno());
     for (
$i 1$i <= $num_cart_items$i++) {
         
$itemname "item_name".$i;
         
$itemnumber "item_number".$i;
         
$on0 "option_name1_".$i;
         
$os0 "option_selection1_".$i;
         
$on1 "option_name2_".$i;
         
$os1 "option_selection2_".$i;
         
$quantity "quantity".$i;

         
$struery "insert into paypal_cart_info(txnid,itemnumber,itemname,os0,on0,os1,on1,quantity,invoice,custom) values ('".$txn_id."','".$_POST[$itemnumber]."','".$_POST[$itemname]."','".$_POST[$on0]."','".$_POST[$os0]."','".$_POST[$on1]."','".$_POST[$os1]."','".$_POST[$quantity]."','".$invoice."','".$custom."')";
         
$result mysql_query($struery) or die("Cart - paypal_cart_info, Query failed:
mysql_error() . "
mysql_errno());

     }
    }



    else{
     
$strQuery "insert into paypal_payment_info(paymentstatus,buyer_email,firstname,lastname,street,city,state,zipcode,country,mc_gross,mc_fee,itemnumber,itemname,os0,on0,os1,on1,quantity,memo,paymenttype,paymentdate,txnid,pendingreason,reasoncode,tax,datecreation) values ('".$payment_status."','".$payer_email."','".$first_name."','".$last_name."','".$address_street."','".$address_city."','".$address_state."','".$address_zip."','".$address_country."','".$mc_gross."','".$mc_fee."','".$item_number."','".$item_name."','".$option_name1."','".$option_selection1."','".$option_name2."','".$option_selection2."','".$quantity."','".$memo."','".$payment_type."','".$payment_date."','".$txn_id."','".$pending_reason."','".$reason_code."','".$tax."','".$fecha."')";
     
$result mysql_query("insert into paypal_payment_info(paymentstatus,buyer_email,firstname,lastname,street,city,state,zipcode,country,mc_gross,mc_fee,itemnumber,itemname,os0,on0,os1,on1,quantity,memo,paymenttype,paymentdate,txnid,pendingreason,reasoncode,tax,datecreation) values ('".$payment_status."','".$payer_email."','".$first_name."','".$last_name."','".$address_street."','".$address_city."','".$address_state."','".$address_zip."','".$address_country."','".$mc_gross."','".$mc_fee."','".$item_number."','".$item_name."','".$option_name1."','".$option_selection1."','".$option_name2."','".$option_selection2."','".$quantity."','".$memo."','".$payment_type."','".$payment_date."','".$txn_id."','".$pending_reason."','".$reason_code."','".$tax."','".$fecha."')") or die("Default - paypal_payment_info, Query failed:
mysql_error() . "
mysql_errno());
    }


    
// send an email in any case
 
echo "Verified";
     
mail($notify_email"VERIFIED IPN""$res\n $req\n $strQuery\n $struery\n  $strQuery2");
}
else {
// send an email
mail($notify_email"VERIFIED DUPLICATED TRANSACTION""$res\n $req \n $strQuery\n $struery\n  $strQuery2");
}

    
//subscription handling branch
    
if ( $txn_type == "subscr_signup"  ||  $txn_type == "subscr_payment"  ) {

      
// insert subscriber payment info into paypal_payment_info table
      
$strQuery "insert into paypal_payment_info(paymentstatus,buyer_email,firstname,lastname,street,city,state,zipcode,country,mc_gross,mc_fee,memo,paymenttype,paymentdate,txnid,pendingreason,reasoncode,tax,datecreation) values ('".$payment_status."','".$payer_email."','".$first_name."','".$last_name."','".$address_street."','".$address_city."','".$address_state."','".$address_zip."','".$address_country."','".$mc_gross."','".$mc_fee."','".$memo."','".$payment_type."','".$payment_date."','".$txn_id."','".$pending_reason."','".$reason_code."','".$tax."','".$fecha."')";
      
$result mysql_query($strQuery) or die("Subscription - paypal_payment_info, Query failed:
mysql_error() . "
mysql_errno());


         
// insert subscriber info into paypal_subscription_info table
        
$strQuery2 "insert into paypal_subscription_info(subscr_id , sub_event, subscr_date ,subscr_effective,period1,period2, period3, amount1 ,amount2 ,amount3,  mc_amount1,  mc_amount2,  mc_amount3, recurring, reattempt,retry_at, recur_times, username ,password, payment_txn_id, subscriber_emailaddress, datecreation) values ('".$subscr_id."', '".$txn_type."','".$subscr_date."','".$subscr_effective."','".$period1."','".$period2."','".$period3."','".$amount1."','".$amount2."','".$amount3."','".$mc_amount1."','".$mc_amount2."','".$mc_amount3."','".$recurring."','".$reattempt."','".$retry_at."','".$recur_times."','".$username."','".$password."', '".$txn_id."','".$payer_email."','".$fecha."')";
        
$result mysql_query($strQuery2) or die("Subscription - paypal_subscription_info, Query failed:
mysql_error() . "
mysql_errno());


             
mail($notify_email"VERIFIED IPN""$res\n $req\n $strQuery\n $struery\n  $strQuery2");

    }
}

// if the IPN POST was 'INVALID'...do this


else if (strcmp ($res"INVALID") == 0) {
// log for manual investigation

mail($notify_email"INVALID IPN""$res\n $req");
}
}
fclose ($fp);
}
?>