sanjaybhowmick/cancel.php

## cancel.php
<?php
echo "<h1>Welcome, Guest</h1>";
echo "<h1>Payment Canceled</h1>";
?>

## index.php
<?php
include 'paypal-pdt-functions.php';

$payment_data = isset($_GET['tx'])
? process_pdt($_GET['tx'])
: FALSE;

$success_url = 'http://www.yourdomain.com/success/';
$cancel_url = 'http://www.yourdomain.com/cancel/';
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>PayPal PDT Sample</title>
</head>
<body>
<h1>PayPal PDT Sample</h1>
<p>Click the Buy Now button and make a dummy payment. When you return the PDT data will be printed.</p>

<form action="https://www.sandbox.paypal.com/cgi-bin/webscr" method="post" accept-charset="utf-8">
<p>
<input type="hidden" name="cmd" value="_xclick" />
<input type="hidden" name="charset" value="utf-8" />
<input type="hidden" name="business" value="sanjay_1237380148_biz@programmer.net" />
<input type="hidden" name="item_name" value="WordPress Customization" />
<input type="hidden" name="item_number" value="WP001" />
<input type="hidden" name="amount" value="50.00" />
<input type="hidden" name="currency_code" value="USD" />
<input type="hidden" name="return" value="<?php echo $success_url; ?>" />
<input type="hidden" name="cancel_return" value="<?php echo $cancel_url; ?>" />
<input type="hidden" name="bn" value="Business_BuyNow_WPS_SE" />
<input type="image" src="https://www.paypal.com/en_US/i/btn/btn_buynowCC_LG.gif" name="submit" alt="Buy Now" />
</p>
</form>

</body>
</html>

## paypal-pdt-functions.php
<?php
function process_pdt($tx)
{
        // Init cURL
        $request = curl_init();
        $pdt_identity_token = 'gvK-79xTEGKi7vlJJnvlNuBz-lgJnWCmK8l2jryNGEe4P7sp4hEh2Mbf4yW';
        // Set request options
        curl_setopt_array($request, array
        (
                CURLOPT_URL => 'https://www.sandbox.paypal.com/cgi-bin/webscr',
                CURLOPT_POST => TRUE,
                CURLOPT_POSTFIELDS => http_build_query(array
                (
                        'cmd' => '_notify-synch',
                        'tx' => $tx,
                        'at' => $pdt_identity_token,
                )),
                CURLOPT_RETURNTRANSFER => TRUE,
                CURLOPT_HEADER => FALSE,
                //CURLOPT_SSL_VERIFYPEER => TRUE,
                //CURLOPT_CAINFO => 'cacert.pem',
        ));

        // Execute request and get response and status code
        $response = curl_exec($request);
        $status   = curl_getinfo($request, CURLINFO_HTTP_CODE);

        // Close connection
        curl_close($request);

        // Validate response
        if($status == 200 AND strpos($response, 'SUCCESS') === 0)
        {
                // Remove SUCCESS part (7 characters long)
                $response = substr($response, 7);

                // Urldecode it
                $response = urldecode($response);

                // Turn it into associative array
                preg_match_all('/^([^=\r\n]++)=(.*+)/m', $response, $m, PREG_PATTERN_ORDER);
                $response = array_combine($m[1], $m[2]);

                // Fix character encoding if needed
                if(isset($response['charset']) AND strtoupper($response['charset']) !== 'UTF-8')
                {
                        foreach($response as $key => &$value)
                        {
                                $value = mb_convert_encoding($value, 'UTF-8', $response['charset']);
                        }

                        $response['charset_original'] = $response['charset'];
                        $response['charset'] = 'UTF-8';
                }

                // Sort on keys
                ksort($response);

                // Done!
                return $response;
        }

        return FALSE;
}
?>

## success.php
<?php if($payment_data)
echo 'Payer Email: ' . $payment_data['payer_email'];
if($_GET):
?>
<hr/>
<h2>Details</h2>

<pre>GET: <?php print_r($_GET) ?></pre>
<pre>PDT: <?php print_r($payment_data) ?></pre>
<?php endif ?>
	<?php
	echo "<h1>Welcome, Guest</h1>";
	echo "<h1>Payment Canceled</h1>";
	?>
	<?php
	include 'paypal-pdt-functions.php';

	$payment_data = isset($_GET['tx'])
	? process_pdt($_GET['tx'])
	: FALSE;

	$success_url = 'http://www.yourdomain.com/success/';
	$cancel_url = 'http://www.yourdomain.com/cancel/';
	?>
	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="utf-8" />
	<title>PayPal PDT Sample</title>
	</head>
	<body>
	<h1>PayPal PDT Sample</h1>
	<p>Click the Buy Now button and make a dummy payment. When you return the PDT data will be printed.</p>

	<form action="https://www.sandbox.paypal.com/cgi-bin/webscr" method="post" accept-charset="utf-8">
	<p>
	<input type="hidden" name="cmd" value="_xclick" />
	<input type="hidden" name="charset" value="utf-8" />
	<input type="hidden" name="business" value="sanjay_1237380148_biz@programmer.net" />
	<input type="hidden" name="item_name" value="WordPress Customization" />
	<input type="hidden" name="item_number" value="WP001" />
	<input type="hidden" name="amount" value="50.00" />
	<input type="hidden" name="currency_code" value="USD" />
	<input type="hidden" name="return" value="<?php echo $success_url; ?>" />
	<input type="hidden" name="cancel_return" value="<?php echo $cancel_url; ?>" />
	<input type="hidden" name="bn" value="Business_BuyNow_WPS_SE" />
	<input type="image" src="https://www.paypal.com/en_US/i/btn/btn_buynowCC_LG.gif" name="submit" alt="Buy Now" />
	</p>
	</form>

	</body>
	</html>
	<?php
	function process_pdt($tx)
	{
	// Init cURL
	$request = curl_init();
	$pdt_identity_token = 'gvK-79xTEGKi7vlJJnvlNuBz-lgJnWCmK8l2jryNGEe4P7sp4hEh2Mbf4yW';
	// Set request options
	curl_setopt_array($request, array
	(
	CURLOPT_URL => 'https://www.sandbox.paypal.com/cgi-bin/webscr',
	CURLOPT_POST => TRUE,
	CURLOPT_POSTFIELDS => http_build_query(array
	(
	'cmd' => '_notify-synch',
	'tx' => $tx,
	'at' => $pdt_identity_token,
	)),
	CURLOPT_RETURNTRANSFER => TRUE,
	CURLOPT_HEADER => FALSE,
	//CURLOPT_SSL_VERIFYPEER => TRUE,
	//CURLOPT_CAINFO => 'cacert.pem',
	));

	// Execute request and get response and status code
	$response = curl_exec($request);
	$status = curl_getinfo($request, CURLINFO_HTTP_CODE);

	// Close connection
	curl_close($request);

	// Validate response
	if($status == 200 AND strpos($response, 'SUCCESS') === 0)
	{
	// Remove SUCCESS part (7 characters long)
	$response = substr($response, 7);

	// Urldecode it
	$response = urldecode($response);

	// Turn it into associative array
	preg_match_all('/^([^=\r\n]++)=(.*+)/m', $response, $m, PREG_PATTERN_ORDER);
	$response = array_combine($m[1], $m[2]);

	// Fix character encoding if needed
	if(isset($response['charset']) AND strtoupper($response['charset']) !== 'UTF-8')
	{
	foreach($response as $key => &$value)
	{
	$value = mb_convert_encoding($value, 'UTF-8', $response['charset']);
	}

	$response['charset_original'] = $response['charset'];
	$response['charset'] = 'UTF-8';
	}

	// Sort on keys
	ksort($response);

	// Done!
	return $response;
	}

	return FALSE;
	}
	?>
	<?php if($payment_data)
	echo 'Payer Email: ' . $payment_data['payer_email'];
	if($_GET):
	?>
	<hr/>
	<h2>Details</h2>

	<pre>GET: <?php print_r($_GET) ?></pre>
	<pre>PDT: <?php print_r($payment_data) ?></pre>
	<?php endif ?>