https://github.com/patrickkerrigan/paypal-ewp

A PHP library for generating encrypted PayPal buttons (EWP)
https://github.com/patrickkerrigan/paypal-ewp

encryption ewp paypal paypal-button php

Last synced: 7 months ago
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A PHP library for generating encrypted PayPal buttons (EWP)

• Host: GitHub
• URL: https://github.com/patrickkerrigan/paypal-ewp
• Owner: patrickkerrigan
• License: bsd-3-clause
• Created: 2017-12-30T13:14:57.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2024-11-25T14:24:30.000Z (over 1 year ago)
• Last Synced: 2025-11-28T01:47:19.946Z (7 months ago)
• Topics: encryption, ewp, paypal, paypal-button, php
• Language: PHP
• Size: 39.1 KB
• Stars: 8
• Watchers: 1
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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# paypal-ewp

A PHP library for generating encrypted PayPal buttons (EWP)

## Prerequisites

To use this library you should first follow the [instructions given by PayPal](https://developer.paypal.com/docs/classic/paypal-payments-standard/integration-guide/encryptedwebpayments/#id08A3I0P20E9) on generating a merchant certificate and key pair and obtaining PayPal's public certificate.

You'll need the following data to generate a button:

* Your Certificate ID issued by PayPal after you uploaded your certificate

* The path to your certificate in PEM format on disk

* The path to your private key in PEM format on disk

* The passphrase for your private key (if you set one)

* The path to PayPal's public certificate in PEM format on disk

* The [HTML Variables](https://developer.paypal.com/docs/classic/paypal-payments-standard/integration-guide/Appx_websitestandard_htmlvariables/) you wish to add to your button

## Installation

The recommended way to install this library is via Composer:

```bash

composer require pkerrigan/paypal-ewp ^1

```

## Usage

Below is a complete example which generates an encrypted button for submitting a shopping cart:

```php

 '_cart',

    'upload' => '1',

    'amount_1' => '1.00',

    'item_name_1' => 'Test Item',

    'business' => 'test@example.org',

    'currency_code' => 'GBP'

];

 

$encryptedCart = $buttonGenerator->encrypt($paypalCert, $merchantCert, $buttonVariables);

 

?>

 

    

    

    

```