Paystack API PHP Library
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README.md

matscode/paystack-php

TODO - RoadMap

  • Use GuzzleHttp
  • Customers
  • Plans
  • Subscription
  • Transfers
  • Charges
  • others...
This package is for communicating with PAYSTACK RESTful API. Paystack

Having other resource point available on PAYSTACK API, Resources like;

  • Transaction
  • Customers
  • Plans
  • Subscription
  • Transfers
  • Charges
  • and many more

Just to name a few, it is only the Transaction Resource that is made available currently in this package. Development is ongoing while releases are Stable. Incase you find a BUG/Security Issue, Please, do be kind to open an issue or email matscode at Gmail dot Com.
PS: This library also works for you if you use paystack inline. You just have to use the verify() method, passing in your transaction $reference|$token|$id is compulsory.

Requirements

  • Curl

Install

Via Composer

$ composer require matscode/paystack

If you use a Framework, check your documentation for how vendor packages are autoloaded else Add this to the top of your source file;

require_once __DIR__ . "/vendor/autoload.php";

Making Transactions/Recieving Payment

Starting Up Paystack Transaction

use Matscode\Paystack\Transaction;
use Matscode\Paystack\Utility\Debug; // for Debugging purpose
use Matscode\Paystack\Utility\Http;

$secretKey = 'sk_test_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx';

// creating the transaction object
$Transaction = new Transaction( $secretKey );

Initializing Transaction

Set data/payload/requestBody to post with initialize request. Minimum required data are email and amount.

// Set data to post using array
$data = 
[
    'email'  => 'customer@email.com',
    'amount' => 500000 // amount is treated in kobo using this method
];
$response = $Transaction->initialize($data);

OR

// Set data to post using this method
$response =
        $Transaction
            ->setCallbackUrl('http://michaelakanji.com') // to override/set callback_url, it can also be set on your dashboard 
            ->setEmail( 'matscode@gmail.com' )
            ->setAmount( 75000 ) // amount is treated in Naira while using this method
            ->initialize();

If you want to get the 200OK raw Object as it is sent by Paystack, Set the 2nd argument of the initialize() to true, example below

// Set data to post using this method
$response =
        $Transaction 
            ->setEmail( 'matscode@gmail.com' )
            ->setAmount( 75000 ) // amount is treated in Naira while using this method
            ->initialize([], true);

Now do a redirect to payment page (using authorization_url)
NOTE: Recommended to Debug $response or check if authorizationUrl is set, and save your Transaction reference code. useful to verify Transaction status

// recommend to save Transaction reference in database and do a redirect
$reference = $response->reference;
// redirect
Http::redirect($response->authorizationUrl); 

Using a Framework? It is recommended you use the reverse routing/redirection functions provided by your Framework

Verifying Transaction

This part would live in your callback file i.e callback.php or whatsoever_you_name.php
It is also imperative that you create Transaction Obj once more.
This method would return the Transaction Obj but false if saved $reference is not passed in as argument and also cant be guessed. Using verify() would require you do a manual check on the response Obj

$response = $Transaction->verify();
// Debuging the $response
Debug::print_r( $response);

OR

// This method does the check for you and return `(bool) true|false` 
$response = $Transaction->isSuccessful();

The two methods above try to guess your Transaction $reference but it is highly recommended you pass the Transaction $reference as an argument on the method as follows

// This method does the check for you and return `(bool) true|false`
$response = $Transaction->isSuccessful($reference);

Moreso, you can also compare if amount paid by customer is the amount expected. This method only works after calling verify() or isSuccessful() in the same script. It is recommended to do this if you use paystack inline to initialize the transaction.

$amountExpected = 5000; // amount must be in kobo
// returns `(bool) true|false`
$Transaction->amountEquals($amountExpected);

Now you can process Customer Valuable.

You might wanna save Transaction $authorizationCode for the current customer subsequent Transaction but not a nessecity. It would only counts to future updates of this package or if you choose to extend the package.

// returns Auth_xxxxxxx 
$response = $Transaction->authorizationCode($reference); // can also guess Transaction $reference

Hire Me

I am available on contract if you need help integrating paystack into your Business Website or something.
Contact me via my email above - michaelakanji.com

Contributions

If you seem to understand the architecture, you are welcome to fork and pull else you can wait a bit more till when i provide convention documentation.

Licence

GNU GPLV3