Instant Payment Notification
Instant payment notification (IPN) is a way to allow online retailers to handle real-time purchase confirmation and server-to-server communication. This allows the retailer to store transaction or order information in its own database to track its own sales data internally.
PayPal notifies a specified URL by an HTTP POST method, the URL should point to an IPN script that should process payment notifications. The first thing that must be done in the script is to validate the notification with PayPal.
The following Image should Illustrate how IPN works:
Read more about Instant Payment Notification: Distributing Goods
Famous quotes containing the words instant and/or payment:
“we two
With life forever old yet new,
Changed not in kind but in degree,
The instant made eternity—”
—Robert Browning (1812–1889)
“Latin America is very fond of the word “hope.” We like to be called the “continent of hope.” Candidates for deputy, senator, president, call themselves “candidates of hope.” This hope is really something like a promise of heaven, an IOU whose payment is always being put off. It is put off until the next legislative campaign, until next year, until the next century.”
—Pablo Neruda (1904–1973)