<?php
/**
* @author Dick Munroe <[email protected]>
* @copyright copyright @ 2006 by Dick Munroe, Cottage Software Works, Inc.
* @license http://www.csworks.com/publications/ModifiedNetBSD.html
* @version 1.0.0
* @package paypalPDT
*/
/**
* If you notice, there is a great deal of similarity between the processing
* of PDT data and IPN data. Internally the only differences are:
*
* 1. The source of the data.
* IPN data is received at the IPN callback via a POST.
* PDT data is received at the PDT return via a GET and an interaction with Paypal.
*
* 2. httpPost needs to be different.
* It needs to interact with Paypal AND produce a source of data from which
* the PDT data can be extracted and processed.
*
* 3. processNotification needs to be different.
* Due to the change in interface for httpPost, the "front" end of processNotification
* has to be slightly different.
*
* All of which means that as written these classes are principally useful for sites which
* use either PDT or IPN, but not both.
*
* Since the actual processing of the PDT or IPN data is functionally identical (at least for
* most of the cases) it would be ideal if you could transparently plug in either the PDT or
* IPN base class and do the right thing with a minimum of code duplication.
*
* Unfortunately this sort of thing is best done with "mixins" or with delegated interfaces.
* Since PHP doesn't support multiple inheritance and since I REALLY dislike delagated
* interfaces the way to reduce to code duplication burden and, more or less transparently,
* do the same thing with either IPN or PDT invocations is to create a duplicate of the
* paypalPDTBase class that inherits from the application IPN class, eliminate all the
* member functions which would normally be overridden by a super class, and things should
* (more or less) work identically.
*
* I'm going to leave actually DOING this as an excersize to the reader, but rest assured that
* I have to do this as well, so the architecture of these classes will be such that it
* will be as easy as possible.
*/
include_once("SDD/class.SDD.php") ;
include_once("class.paypalPDTBase.php") ;
class examplePaypalPDT extends paypalPDTBase
{
function examplePaypalPDT($theReceiverEmail,
$thePDTIdentityToken,
$thePaypalURL = NULL,
$theSandboxURL = NULL)
{
$this->paypalPDTBase($theReceiverEmail, $thePDTIdentityToken, $thePaypalURL, $theSandboxURL) ;
}
function preprocess(&$theSource)
{
$theSource = array_merge(array('test_pdt' => '1'), $theSource) ;
echo 'preprocess:theSource = ',SDD::dump($theSource),SDD::newline() ;
return true ;
}
function preprocessPDT(&$thePDT)
{
echo 'preprocessPDT:thePDT = ',SDD::dump($thePDT),SDD::newline() ;
}
function checkTransactionId($theTransactionId)
{
echo 'checkTransactionId = ',SDD::dump($theTransactionId),SDD::newline(2) ;
return TRUE ;
}
function validateItem(&$thePDT)
{
echo 'validateItem:thePDT = ',SDD::dump($thePDT),SDD::newline(2) ;
return TRUE ;
}
function alternatePaymentStatus(&$thePDT)
{
echo 'alternatePaymentStatus:thePDT = ',SDD::dump($thePDT),SDD::newline(2) ;
return TRUE ;
}
function processPayment(&$thePDT)
{
echo 'processPayment:thePDT = ',SDD::dump($thePDT),SDD::newline(2) ;
return TRUE ;
}
function postprocess(&$thePDT, $theStatus)
{
echo 'postprocess:thePDT = ',SDD::dump($thePDT),SDD::newline(2) ;
echo 'postprocess:theStatus = '.SDD::dump($theStatus),SDD::newline(2) ;
}
} ;
/**
* The identity token gets handed to you when you enable PDT for your site.
* See your profile under Selling Preferences->Website Payment Preferences
* for how to enable PDT. The identity token is at the top of the page
* displayed AFTER you save your Website Payment Preferences. Don't loose it.
*
* @var string The Paypal Payment Data Transfer Identity Token
*/
$thePDTIdentityToken = 'XV20ACunItkcAQACjJOhIsWYUCt1D1Ce7HnqthqzwlmsHdAEddnp4si08OW' ;
$theSandbox = "sandbox." ;
$theReceiverEmail = "[email protected]" ;
if (count($_GET) > 0)
{
echo 'serialize($_GET) = ',SDD::dump(serialize($_GET)),SDD::newline(2) ;
echo '$_GET = ',SDD::dump($_GET),SDD::newline(2) ;
/*
* For reasons I don't understand, I can't communicate reliably with the https
* versions of paypal but the http versions work just fine and for testing
* it doesn't matter.
*/
$thePDT = new ExamplePaypalPDT($theReceiverEmail,
$thePDTIdentityToken,
'http://www.paypal.com/cgi-bin/webscr',
'http://www.sandbox.paypal.com/cgi-bin/webscr') ;
$thePDTData = array() ;
$theReturnStatus = $thePDT->processNotification($_GET, $thePDTData) ;
echo 'example.php:thePDT = ',SDD::dump($thePDT),SDD::newline(2) ;
echo 'example.php:theReturnStatus = ',SDD::dump($theReturnStatus),SDD::newline(2) ;
}
else
{
?>
<form action="https://www.<? echo $theSandbox ; ?>paypal.com/cgi-bin/webscr" method="post">
<p>
<input type="hidden" name="cmd" value="_xclick">
<input type="hidden" name="business" value="<? echo $theReceiverEmail ; ?>">
<input type="hidden" name="item_name" value="ESPlanner Individual (Download+CD)">
<input type="hidden" name="item_number" value="000002">
<input type="hidden" name="amount" value="164.00">
<input type="hidden" name="no_shipping" value="2">
<input type="hidden" name="no_note" value="1">
<input type="hidden" name="currency_code" value="USD">
<input type="hidden" name="bn" value="PP-BuyNowBF">
<input type="hidden" name="notify_url" value="">
<input type="hidden" name="return" value="<? echo $_SERVER['SCRIPT_URI'] ; ?>">
<input type="image" src="https://www.<? echo $theSandbox ; ?>paypal.com/en_US/i/btn/x-click-but23.gif" border="0" name="submit" alt="Make payments with PayPal - it's fast, free and secure!">
(Download+CD)..............164.00
<img alt="" border="0" src="https://www.<? echo $theSandbox ; ?>paypal.com/en_US/i/scr/pixel.gif" width="1" height="1">
</p>
</form>
<?php
}
?>
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