Get information from PayPal after a transaction

Question

I want to create a simple transaction on my Web Site where after the person\'s transaction completes, I want paypal to redirect the user to go to a place on my site and I w

Answer 1

Notify URL should lead to the script that saves the returned data from PayPal, such as:

   /** Fetch order from PayPal (IPN reply)
    * @return int received ID of inserted row if received correctly, 0 otherwise
    */
   function FetchOrder()
   {
   $transactionID=$_POST["txn_id"];
   $item=$_POST["item_name"];
   $amount=$_POST["mc_gross"];
   $currency=$_POST["mc_currency"];
   $datefields=explode(" ",$_POST["payment_date"]);
   $time=$datefields[0];
   $date=str_replace(",","",$datefields[2])." ".$datefields[1]." ".$datefields[3];
   $timestamp=strtotime($date." ".$time);
   $status=$_POST["payment_status"];
   $firstname=$_POST["first_name"];
   $lastname=$_POST["last_name"];
   $email=$_POST["payer_email"];
   $custom=$_POST["option_selection1"];
   if ($transactionID AND $amount)
      {
      // query to save data
      return $this->insertID;
      }
   else
      {
      return 0;
      }
   }

You can also choose to verify an order later on:

/** Verify PayPal order (IPN)
    * PayPal returns VERIFIED or INVALID on request
    * @return bool verified 1 if verified, 0 if invalid
    */
   function VerifyOrder()
   {
   $_POST["cmd"]="_notify-validate";
   $ch=curl_init();
   curl_setopt($ch,CURLOPT_HEADER,0);
   curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
   curl_setopt($ch,CURLOPT_USERAGENT,"your agent - replace");
   curl_setopt($ch,CURLOPT_URL,"https://www.paypal.com/cgi-bin/webscr");
   curl_setopt($ch,CURLOPT_POST, 1);
   foreach ($_POST as $key=>$value)
      {
      $string.="&".$key."=".urlencode(stripslashes($value));
      }
   curl_setopt($ch, CURLOPT_POSTFIELDS, $string);
   $result=curl_exec($ch);
   if ($result=="VERIFIED") return 1;
   else return 0;
   }