Okay, there are two payment options:

  • Somebody buys something on your website, you receive the notification by email and after that you can ship the product to the customer (or send it by email).
  • Somebody buys something on your website, then the website receives payment notification and automatically send the product to the customer.

I think the second way is absolutely better because it works without you — you can snowboarding or be asleep at this time 🙂

>> Three different WooCommerce hooks after payment completed

>> Create a Payment Gateway Plugin for WooCommerce

So, how to make it work?

Step 1. Everything begins with a form

That’s your payment form, more information about PayPal form parameters you can find here and here.

<form action="https://www.paypal.com/cgi-bin/webscr" method="post">
	<input type="hidden" name="cmd" value="_xclick">
	<!-- The PayPal account to pay -->
	<input type="hidden" name="business" id="business" value="YOUR PAYPAL EMAIL HERE" />
	<!-- Amount price -->
	<input type="hidden" name="amount" id="amount" value="9.00" />
	<!-- It will be shown on PayPal checkout page -->
	<input type="hidden" name="item_name" id="item_name" value="ITEM NAME" />
	<!-- Specify your product ID here to process it later -->
	<input type="hidden" name="item_number" id="item_number" value="1038" />
	<!-- Charset -->
	<input type="hidden" name="charset" value="utf-8">
	<!-- Thank You page, the customer will be redirected after the payment -->
	<input type="hidden" name="return" value="https://rudrastyh.com/thank-you">
	<button>Buy Now</button> 

Paypal IPN (Instant payment notifications) mechanism

Step 2. The IPN settings

Step 3. The code

The last step is to process PayPal notifications. This is the content of /shop/paypal.php file.

$r = array(
    'status' => $_POST['payment_status'],
    'payer_email'      => $_POST['payer_email']
if( isset( $_POST['item_number'] ) ) {
	$r['item_number'] = intval($_POST['item_number']);
} elseif ( isset( $_POST['item_number1'] ) ) {
	$r['item_number'] = intval($_POST['item_number1']);
if( strtolower( $_POST['payment_status'] ) == 'completed' && $r['item_number'] ) {
	 * On success - do some stuff here, you can:
	 * register new user
	 * send the product by email
	 * redirect customer to a product page
	 * etc
// uncomment the following lines if you want to receive the debug message each time
// $headers  = "Content-type: text/html; charset=utf-8 \r\n"; 
// $headers .= "From: paypal.php <[email protected]>\r\n";
// $msg = print_r($_POST, true);
// mail("[email protected]", 'IPN debug message', $msg, $headers);