Paypal-IPN

Presenter: Supriti Panda, Mindfire Solutions
Date: 18/06/2014
Paypal IPN

About Me
Skills
Certifications
Connect me
PHP, Codeigniter, Zend Framework, Magento, Wordpress,
Javascript, Jquery, CSS3, Mysql, SOAP, REST
Contact me
ZEND PHP5.3
Magento Certified Developer - M70-101
LinkedIn : http://www.linkedin.com/in/supritipanda
Twitter : https://twitter.com/supritip
Facebook : https://www.facebook.com/supritipp
Email : supritip@mindfiresolutions.com / supritipp@gmail.com
Skype : mfsi_supritip

AGENDA
→ Why it is necessary?
→ What is IPN?
→ How it works?
→ Setup
→ Code Sample
→ IPN Simulator
→ Demo

Why it is necessary?

Customer is shopping online happily.

Customer will start complaining.

What is IPN?
→ Instant Payment Notification (IPN) is a message service
that automatically notifies merchants of events related to
PayPal transactions. Merchants can use it to automate
back-office and administrative functions, like fulfilling
orders and providing customers with order status.

What is IPN?
IPN is a message service that PayPal uses to notify you about
events like:
→ Instant payments
→ Authorizations
→ eCheck payments
→ Recurring payment / subscription
→ Chargebacks / refund
→ Adaptive Payment

How it works?

How it works?
STEPS:
1. A user clicks a PayPal button to kick off a checkout flow.
2. PayPal HTTP POSTs your listener an IPN message that
notifies you of this event.
3. Your listener returns an empty HTTP 200 response.
4. Your listener HTTP POSTs the complete, unaltered message
back to PayPal.
Note: This message must contain the same fields, in the same order, as the original IPN
from PayPal, all preceded by cmd=_notify-validate. Further, this message must use the
same encoding as the original.

How it works?
5. PayPal sends a single word back - either VERIFIED (if the
message matches the original) or INVALID (if the message
does not match the original).
An IPN message consists of variables that describe the
transaction. These variables contain information about you,
your customer, and the details of the transaction itself.

Paypal Setup
My Account->Selling Preferences->Instant Payment Notification Preferences

Code Sample
Sandbox Url:
https://www.sandbox.paypal.com/cgi-bin/webscr
Live Url:
https://www.paypal.com/cgi-bin/webscr
https://github.com/paypal/ipn-code-samples/blob/master/paypal_ipn.php

Code Sample
Note: Sometimes you have to write header('HTTP/1.1 200 OK'); on the top of your code to acknowledge Paypal.

Code Sample

IPN Simulator

DEMO

Question and
Answer

Thank you

References
https://developer.paypal.com/docs/classic/ipn/gs_IPN/
https://developer.paypal.com/webapps/developer/docs/classic/products/instant-payment-notification/
https://developer.paypal.com/docs/classic/ipn/ht_ipn
Image References
http://www.ydeveloper.com/blog/ecommerce/how-ecommerce-web-developer-can-help-you
http://www.someecards.com/usercards/viewcard/MjAxMi1hNzAzODE2N2ZlOTJjMDQ5
http://blog.manishchhabra.com/2013/10/programming-for-the-passion/
http://www.smallbusinessscope.com.au/customer-complaints-the-first-three-steps/
http://www.atakinteractive.com/blog/benefits-of-hiring-a-web-developer-for-your-ecommerce-website/
http://ecommercewebsitedevelopmentmelbourne.blogspot.in/2013/05/ecommerce-website-
developer-play-vital.html

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http://www.linkedin.com/company/mindfire-solutions
http://twitter.com/mindfires

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