I am using Paypal Sandbox account. I want to automatic page redirect my own website after payment successful order authorized.
Your transaction ID for this payment is: 8E7045675M462235P.
We'll send a confirmation email to ramesh#cognizsoft.com.
return to aman#cognizsoft.com
Go to PayPal account overview
Add funds from your bank
it's go to back on store when click on return to aman#cognizsoft.com
With Payments Standard there is no guarantee the user will make it back to your site. You can help things by enabling Auto-Return in your PayPal account profile, but even then the user could close the browser before the redirect happens and they would never make it there.
If you need to automate post-payment-processing tasks you can do that using IPN which will be triggered regardless of whether or not the user makes it back to your site.
If you would rather ensure that you will indeed end up on your site to finalize every checkout then you could switch to the Express Checkout API.
Related
I have a website that use can buy points. I use paypal for payment. My method is this.
- After paypal sucess redirect to a success?point=100
- In success page I will add point to user base on the point variable.
- But like this user can type direct in url or refresh the page. It also add point.
My question is how to prevent user type direct in url or refresh
Server language: PHP, Nodejs
Use the redirect page to notify the user that their payment has been completed, but do not take any action from that page.
Instead, set up a PayPal IPN (Instant Payment Notification) endpoint. PayPal will make a request to this endpoint with specific parameters to securely notify you that a payment has been received; use that to update the user's balance. Note that this notification may arrive either before or after the user views the redirect page, depending on how quickly their browser redirects and how long it takes PayPal to verify the payment and call your endpoint.
I am working on a project which will be able to accept paypal payments. The sequence I am using is as follows:
My current development sites' payment steps:
The user goes to my site,
Chooses to pay for something,
Is redirected to paypal,
The payment is completed on paypal,
Then the user gets redirected back to my sites success url.
This works fine, as I use an IPN listener to update my database in the background when paypal decides to confirm the committed payment and let the user know accordingly.
However, a few days ago, I was doing some online shopping of my own, and paid using paypal. I noticed that when I paid, I was redirected to paypal, where I logged in and saw the paypal invoice. I clicked confirm, and I was redirected back to the sellers website, where I so a summary and was told to commit the purchase!!!
So basically, the sequence was something like this:
My shopping experience from a different sellers site:
I wanted to pay for the items,
I was redirected to paypal,
I was the invoice and confirmed the payment,
I was redirected to the sellers site,
I was was shown a confirmation of the order and was asked to commit the payment,
I committed the payment and was told that the order has been completed.
The difference, my site commits the purchase on the paypal website and I listen for a reponse from paypal using their IPN system, but this second site seems to commit the payment on the sellers actual website.
I thought, wow, that felt so much more reassuring from a user experience point of view.
How is that done?
Sounds like you're currently using Payments Standard and you want Express Checkout.
Express Checkout is very similar to Standard except that it's API based and the user gets returned to your site prior to finalizing the payment.
It consists of 3 API calls...
1) SetExpressCheckout - gets a token back from PayPal that you append to the end of a redirect URL that sends the person over to PayPal to login and review the payment.
2) GetExpressCheckoutDetails - This allows you to pull the payer details (name, phone, shipping address, etc.) back into your app from PayPal. This is an optional step.
3) DoExpressCheckoutPayament - this finalizes the payment. No money is moved until this API call happens, and it doesn't happen, of course, until the user is already back at your site and within your own app flow again.
You can still use IPN the way you are, but you could also things directly within the flow as well since you get instant responses back from the API, and you can setup your own review however you want to.
My sent data to paypal is
"https://www.paypal.com/cgi-bin/webscr/cmd=_cart&upload=1&business=seller.email#something.com¤cy_code=USD&bn=BusinessName&return=http://www.sellersite.com&item_number_1=55&item_name_1=battery&amount_1=55&quantity_1=2&item_number_2=52&item_name_2=bat&amount_2=5&quantity_2=3"
And I want to show those sent data(item number, item name,amount,quantity) and the paypal transaction id to the buyer on "http://www.sellersite.com" after successful payment. (Suppose, the seller has the merchant account with paypal and he would enter that paypal id into database from admin section of the website. So,I would not think about his paypal account settings, my job is just to create the environment for paypal payment for the seller.)
If I write a script like
$T_ID=$_REQUEST['tx']; // or $T_ID=$_GET['tx']; **ref(tx):- "https://cms.paypal.com/us/cgi-bin/?cmd=_render-content&content_ID=developer/howto_html_paymentdatatransfer"
$item=$_REQUEST['item_number_1']; // or $item=$_GET['item_number_1'];
Then would I get those data from paypal ?
Please tell me.
-Thanks.
It's not going to be quite that simple. You'll need to setup Payment Data Transfer (PDT) in order to get details sent back to your return URL after the buyer completes the payment.
This is useful if you're simply going to display details back to the user, but it's not recommended for updating your own database, sending out email notifications, etc. because there is no guarantee this page will ever be reached so the code won't always run.
For that sort of thing you'll want to use Instant Payment Notification (IPN). This works very similar to PDT except that it will always POST data to your IPN listener on your server regardless of whether or not the user makes it back to your return URL, and it happens outside of your checkout system all together.
I'm doing a project involving Paypal, more specifically with the NVP API in PHP. But I just can't seem to figure what to use the IPN feature for.
I mean, when the user has been redirected to Paypal to confirm the purchase, he is redirected back to my website's "Paypal-succes-page", when the transaction is complete. And just to be sure that he actually payed i could use the "PaymentDetails" operation.
Now where does IPN fit in this process? and what is the benefit of it?
Thanks
The integrate with PayPal's services you will notice there are three main channels (and IMO it's important to know this so you can decide the benefits for your application):
IPN: Instant Payment Notification
PDT: Payment Data Transfer
PayPal's API
To use PayPal's IPN you need to add a 'listener' script (example) and add the address to your PayPal account. Whenever an event occurs PayPal will send a message directly to your server via your listener and you then update your accounts appropriately. This is especially useful for running subscription services as events will occur in the background without user intervention and you can capture successful/failed recurring payments etc.
PayPal's PDT is a system for accepting data when a user is redirected back to your site from PayPal. For example, a user clicks 'Buy', they are directed to PayPal, enter information etc. Then, once the payment has been taken, they are redirected back to your site. PayPal can pass details about the transaction including whether it was successful or not so you can display the appropriate success/failed page from your site.
PayPal's API allows you to integrate more deeply with PayPal's services, and you would use this if you were managing payments directly from your site.
These services aren't mutually exclusive, so you can use any combination with your application.
I hope this helps
The IPN feature is a very useful feature which you should use to update your database in my opinion. Sure the user is redirected to your success-page after the purchase where you can validate the payment details.
But what if he closes (by accident or not) the browser before reaching your success page? You will never know the result of the transaction and you will never update your database or process his order accordingly.
When using the IPN you can be sure that the transaction result will always reach you because PayPal will keep on making an offline request to your IPN page until it has reached your servers.
Instant Payment Notification
The typical usage of the IPN is to validate the purchase and to let your script or management system know that the transaction is complete so your system can update any records you may have for your service.
But the most important part is that the transaction is validated.
IPN send all data about transaction to your server - price, items, contacts ... so you can check, if someone don't pay you only 1$ instead of 100$ and confirm your order. It prevets thiefs, cheaters, ... USE IT! ;)
I am using sandbox mode.
I click buy item on my shop, and after i pay with sanndbox account it takes me to "Thank you for your payment - Paypal" but doesn't redirect back to my site! I already have IPN setup!
I dont understand, do I need to contact paypal first ? or is there some section on paypal where you can enter your shopping site URL to get it authorized ?
IPN sends the notification to your server behind the scenes, whether the end user is redirected or not.
PDT, is a different (though somewhat similar) technology offered by PayPal, which sends the data when it redirects. Are you sure you are not receiving IPN notifications?
good comparison of the various methods here: https://www.x.com/message/108223#108223
when using IPN, the transaction information will be posted to your ipn handler url directly from paypal in the background. the ipn url can be specified with the "notify_url" parameter or in your profile.
the customer will be redirected back to your site. the target url can be set in your profile or specified in the transaction using the "return" parameter.