README

Easily integrate M-PESA APIs into your PHP or Laravel applications using the kahsaygt/mpesa-sdk-php package.🌟

Features ✨

• 🔑 Easy Authentication: Generate access tokens effortlessly.
• 📲 STK Push (NI Push): Initiate customer-to-business payments with USSD prompts.
• 🏪 C2B Support: Register URLs and handle customer payments.
• 💸 B2C Payouts: Process business-to-customer disbursements.
• 🧩 Modular Design: Well-structured and extensible codebase.
• 🚨 Error Handling: Robust, developer-friendly error management.

Installation 📦

Install the SDK via Composer:

composer require kahsaygt/mpesa-sdk-php:dev-main

Using a Custom Repository 🌍

Since this package is hosted on GitHub, add the repository to your composer.json:

"repositories": [
    {
        "type": "vcs",
        "url": "https://github.com/kahsay-GT/mpesa-sdk-php.git"
    }
],
"require": {
    "kahsaygt/mpesa-sdk-php": "dev-main"
},


"minimum-stability": "dev"

Then run:

composer update

Laravel (Optional)

If using Laravel, publish the configuration file (if supported by your SDK):

php artisan vendor:publish --tag=mpesa-config

Requirements ✅

• 🐘 PHP 7.4 or higher
• 🌐 cURL extension enabled
• 📥 Composer

Usage 🛠️

This SDK provides a Client class for API interactions and service classes for each M-PESA API endpoint. Below are usage examples for authentication and various API operations.

1. Authentication 🔐

All API requests require an access token. Use Authentication.php to authenticate a Client instance:

require __DIR__ . '/vendor/autoload.php';
require __DIR__ . '/Authentication.php'; // Adjust path as needed

use Mpesa\Sdk\Client;

$client = getClient();
authenticate($client, __DIR__ . '/logs/auth.log');

// The client is now ready for API requests

2. STK Push (Lipa Na M-PESA Online) 📱

Initiate an STK Push payment request using StkPushService:

require __DIR__ . '/vendor/autoload.php';
require __DIR__ . '/Authentication.php';
require __DIR__ . '/StkPushService.php';

use Ramsey\Uuid\Uuid;

$service = new StkPushService();
$service->run();

3. Account Balance Query 📊

Check your account balance using AccountBalanceService:

require __DIR__ . '/vendor/autoload.php';
require __DIR__ . '/Authentication.php';
require __DIR__ . '/AccountBalanceService.php';

$service = new AccountBalanceService();
$service->run();

4. B2C Payout 💸

Initiate a B2C payout using B2CPayOutService:

require __DIR__ . '/vendor/autoload.php';
require __DIR__ . '/Authentication.php';
require __DIR__ . '/B2CPayOutService.php';

$service = new B2CPayOutService();
$service->run();

5. C2B URL Registration 🌐

Register C2B callback URLs using C2BRegisterService:

require __DIR__ . '/vendor/autoload.php';
require __DIR__ . '/Authentication.php';
require __DIR__ . '/C2BRegisterService.php';

$service = new C2BRegisterService();
$service->run();

6. Transaction Status Query 🔍

Query transaction status using TransactionStatusService:

require __DIR__ . '/vendor/autoload.php';
require __DIR__ . '/Authentication.php';
require __DIR__ . '/TransactionStatusService.php';

$service = new TransactionStatusService();
$service->run();

7. Transaction Reversal 🔄

Reverse a transaction using TransactionReversalService:

require __DIR__ . '/vendor/autoload.php';
require __DIR__ . '/Authentication.php';
require __DIR__ . '/TransactionReversalService.php';

$service = new TransactionReversalService();
$service->run();

8. B2C Simulation 🧪

Simulate a B2C transaction using SimulateTransactionService:

require __DIR__ . '/vendor/autoload.php';
require __DIR__ . '/Authentication.php';
require __DIR__ . '/SimulateTransactionService.php';

$service = new SimulateTransactionService();
$service->run();

Configuration in pure PHP ⚙️

The Authentication.php file centralizes configuration. Customize it with:

$config = [
    'base_url' => 'https://apisandbox.safaricom.et/mpesa/',
    'consumer_key' => 'your_consumer_key',
    'consumer_secret' => 'your_consumer_secret',
];
$securityCredential = 'your_security_credential';

Configuration in Laravel ⚙️

Configuration is managed via config/mpesa.php in Laravel projects. After publishing the config file with php artisan vendor:publish --tag=mpesa-config, customize it with your credentials. Use environment variables in your .env file:

APP_ENV=development #production
DEV_MPESA_BASE_URL=https://apisandbox.safaricom.et/
DEV_MPESA_CONSUMER_KEY=your_consumer_key
DEV_MPESA_CONSUMER_SECRET=your_consumer_secret
DEV_SECURITY_CREDENTIAL=your_security_credential

PROD_MPESA_BASE_URL=https://apisandbox.safaricom.et/
PROD_MPESA_CONSUMER_KEY=your_consumer_key
PROD_MPESA_CONSUMER_SECRET=your_consumer_secret
PROD_SECURITY_CREDENTIAL=your_security_credential

---

## Laravel Integration ⚙️

In a Laravel controller:

```php
<?php

namespace App\Http\Controllers;

use Mpesa\Sdk\Authentication as MpesaAuth;
use Mpesa\Sdk\Client;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\Log;

class MpesaController extends Controller
{
    private function getClient(): Client
    {
        $env = env('APP_ENV', 'development');
        $config = config("mpesa.{$env}", [
            'base_url' => 'https://apisandbox.safaricom.et/mpesa/',
            'consumer_key' => 'YOUR_CONSUMER_KEY',
            'consumer_secret' => 'YOUR_CONSUMER_SECRET',
        ]);
        return new Client(array_merge($config, [
            'timeout' => 1, 'retries' => 5, 'retry_delay' => 10,
        ]));
    }

    private function authenticate(Client $client): string
    {
        $auth = new MpesaAuth($client);
        $token = $auth->generateToken();
        Log::info("M-Pesa Auth Success", ['token' => $token->accessToken]);
        return $token->accessToken;
    }

    private function getAccessToken(): string
    {
        return Cache::remember('mpesa_access_token', 3599, fn() => $this->authenticate($this->getClient()));
    }

    public function testSdk()
    {
        try {
            return response()->json(['token' => $this->getAccessToken()]);
        } catch (\Exception $e) {
            return response()->json(['error' => $e->getMessage()], 500);
        }
    }
}

Api Route

Route::get('/test-mpesa', [MpesaController::class, 'testSdk']);

Route::prefix('mpesa')->group(function () {
    Route::get('/auth', [MpesaController::class, 'getToken']);
    Route::post('/balance', [MpesaController::class, 'checkBalance']);
    Route::post('/b2c/payout', [MpesaController::class, 'b2cPayout']);
    Route::post('/c2b/register', [MpesaController::class, 'c2bRegister']);
    Route::post('/c2b/simulate', [MpesaController::class, 'simulateTransaction']);
    Route::post('/stk/push', [MpesaController::class, 'stkPush']);
    Route::post('/reverse', [MpesaController::class, 'reverseTransaction']);
    Route::post('/status', [MpesaController::class, 'transactionStatus']);
});

Notes 📝

• Service Classes: Each service class (e.g., StkPushService) encapsulates an API operation. Copy the full implementations from your project files.

• Logging: Logs are written to the logs/ directory. Ensure it exists and is writable.

• UUID: Some examples use ramsey/uuid. Install it with:

  composer require ramsey/uuid

• Sandbox vs Production: Update base_url in Authentication.php for production use:

  'base_url' => 'https://apisandbox.safaricom.et/mpesa'

Instructions

1. Open your README.md file in your project.
2. Copy the entire content above.
3. Paste it into your README.md, replacing the existing content.
4. Save the file.

Testing Examples

This package uses Php for testing. To run the tests, use the following command:

   php  examples/Authentication.php
   php  examples/StkPush.php
   php  examples/C2BRegister.php
   php  examples/C2BValidate.php
   php  examples/C2BConfirm.php
   php  examples/SimulateTransaction.php
   php  examples/B2CPayOut.php
   php  examples/TransactionStatus.php
   php  examples/AccountBalance.php
   php  examples/TransactionReversal.php
   .

Customization

• Paths: Adjust require paths based on where you place Authentication.php and service files.
• Credentials: Replace placeholders (your_consumer_key, your_security_credential) with your actual values.
• Extra Sections: Need "Contributing," "License," or "Troubleshooting" sections? Let me know, and I’ll expand it!

Support 📧

• For issues or questions, open an issue on GitHub or contact kahsay21a@gmail.com
• Reach out on Telegram: @KahsayG21 📩