Chapa-PHP

Unofficial PHP library for Chapa Payment Gateway.

Description

Integrating Chapa to your app is simple as it is. So what benefit can you get from using this library? well, here are some of the benefits you can get by using this library.

• Allows you to focus on building your app instead of spending time on making the integration to work.
• It provides utility methods that can save you from writing some lines of codes. For example the library supports data validation out of the box, so that you don't have to manually sanitize users input.
• The library gives you an easy interface to manage any data send to or received from Chapa API in an object-oriented approach.

Documentation

Visit official Chapa's API Documentation

Installation

Go to your project directory and install the latest version of the library using following command

composer require yaphet17/chapa

Usage

Instantiate a Chapa class.

$chapa = new Chapa('{your-secrete-key}');

Create a PostData object that will represent your payment details.PostData class uses the Fluent Interface, so you can be able to chain setter methods.

$postData = new PostData();
$postData->amount('100')
    ->currency('ETB')
    ->email('[email protected]')
    ->firstname('Abebe')
    ->lastname('Bikila')
    ->transactionRef('transaction-ref')
    ->callbackUrl('https://chapa.co')
    ->customizations(
        array(
            'customization[title]' => 'I love e-commerce',
            'customization[description]' => 'It is time to pay'
        ) 
    );

You can also use a utility method provided by the library to generate a unique and convenient transaction reference token. Util class provides a method that can generate a token by combining your custom prefix such as company initials (optional), current timestamp and random string.

$transactionRef = Util::generateToken('acme'); // generated transaction reference will start with the prefix aceme

To initialize a transaction, all you have to do is call initializa method in side Chapa class. Pass the PostData object you created in the above step.

$response1 = $chapa->initialize($postData);

You can also verify your transaction using verify method inside Chapa class. This method takes a transaction reference token so that it can uniquely identify a specific transaction.

$response2 = $chapa->verify($transactionRef);

Both of the above two methods (i.e initialize and verify) returns an instance of ReponseData class. This class will allow you to access the data returned by Chapa API with an OOP approach. It has the same structure as the JSON data returned by Chapa API plus status code and a raw JSON data.

$statusCode = $resopnse1->getStatusCode();
$message = $response1->getMessage();
$success = $response1->getStatus();
$data = $response1->getData();

For some reason, if you want the raw JSON data you can easily access it using getRawJSON method.

$json = $response->getRawJson();

Below is the full implementation of the above steps.

$chapa = new Chapa('{your-secrete-key}');
$transactionRef = Util::generateToken();
$postData = new PostData();
$postData->amount('100')
    ->currency('ETB')
    ->email('[email protected]')
    ->firstname('test')
    ->lastname('user')
    ->transactionRef($transactionRef)
    ->callbackUrl('https://chapa.co')
    ->customizations(
        array(
            'customization[title]' => 'E-commerce',
            'customization[description]' => 'It is time to pay'
        )
    );

$response1 = $chapa->initialize($postData);
print_r($response1->getMessage());
print_r($response1->getStatus());
print_r($response1->getData());
echo $response->getRawJson();
$response2 = $chapa->verify($transactionRef);
if($response2->getStatusCode() == 200){
    echo 'Payment not verified because ' . $response2->getMessage()['message'];
}

Contribution

Any sort of contribution to this library is appreciated. Make a PR for minor changes or create an issue for breaking changes.

This open source library is licensed under the terms of the MIT License.

Enjoy.