PhonePe Payment Gateway SDK for PHP

The PhonePe Payment Gateway SDK for PHP provides a convenient way to integrate with PhonePe's payment gateway APIs in your PHP applications. This SDK simplifies the process of initiating payments, checking transaction statuses, and handling callbacks.

Requirements

• PHP 8.2 or later
• Composer for dependency management

Installation

Mandatory Setup

Before proceeding with the installation steps below, you must add the following repository details to your project’s root composer.json file. This step is required to fetch the PhonePe PHP SDK package.

{
 "repositories": [
      {
        "type": "package",
        "url": "./vendor/phonepe/pg-sdk-php/",
        "package": {
          "name": "phonepe/pg-php-sdk-v2",
          "version": "2.0.0",
          "dist": {
            "url": "https://phonepe.mycloudrepo.io/public/repositories/phonepe-pg-php-sdk/v2-sdk.zip",
            "type": "zip"
          },
          "autoload": {
            "classmap": ["/"]
          }
        }
      }
    ],

    "require": {
        "phonepe/pg-php-sdk-v2": "^2.0",
        "vlucas/phpdotenv": "^5.6",
        "netresearch/jsonmapper": "^4.4"
    }
}

You can add the PhonePe PG SDK for PHP as a dependency to your project using Composer.

composer install

Initialization

To start using the SDK, you need to initialize the StandardCheckoutClient. You'll need your clientId, clientSecret, and clientVersion from PhonePe.

use PhonePe\payments\v2\standardCheckout\StandardCheckoutClient;
use PhonePe\Env;

$clientId = "YOUR_CLIENT_ID";
$clientSecret = "YOUR_CLIENT_SECRET";
$clientVersion = "YOUR_CLIENT_VERSION";
$env = Env::UAT; // Or Env::PRODUCTION

$phonepeClient = StandardCheckoutClient::getInstance($clientId, $clientVersion, $clientSecret, $env);

Standard Checkout

The Standard Checkout flow allows you to redirect your users to the PhonePe payment page to complete their transactions.

1. Initiate a Payment

First, create a StandardCheckoutPayRequest with a unique order ID, the amount, and a redirect URL.

use PhonePe\payments\v2\models\request\builders\StandardCheckoutPayRequestBuilder;

$merchantOrderId = "ORDER-" . uniqid();
$amount = 1000; // Amount in paise (e.g., 1000 for ₹10.00)
$redirectUrl = "https://your-website.com/payment-redirect";
$message = "Payment for order " . $merchantOrderId;


$payRequest = (new StandardCheckoutPayRequestBuilder())
    ->merchantOrderId($merchantOrderId)
    ->amount($amount)
    ->redirectUrl($redirectUrl)
    ->message($message)
    ->build();

2. Make the pay API Call

Next, call the pay method with the request object to get a payment response.

try {
    $payResponse = $phonepeClient->pay($payRequest);
    $redirectUrl = $payResponse->getRedirectUrl();
    // Redirect the user to the $redirectUrl to complete the payment
    header("Location: " . $redirectUrl);
    exit();
} catch (PhonePe\common\exceptions\PhonePeException $e) {
    // Handle exceptions
    echo $e->getMessage();
}

The pay method will return a StandardCheckoutPayResponse containing a redirectUrl. You should redirect your user to this URL to complete the payment.

Check Order Status

You can check the status of a transaction using the getOrderStatus method with the merchant's order ID.

try {
    $statusResponse = $phonepeClient->getOrderStatus($merchantOrderId);
    // Process the status response
    echo "Payment state: " . $statusResponse->getState();
} catch (PhonePe\common\exceptions\PhonePeException $e) {
    // Handle exceptions
    echo $e->getMessage();
}

Handle Callbacks

PhonePe will send server-to-server callbacks to your specified callback URL to notify you of the payment status. The SDK provides a method to verify the authenticity of these callbacks.

// Get headers and body from the callback request
$headers = [];
foreach ($_SERVER as $key => $value) {
    if (strpos($key, 'HTTP_') === 0) {
        $headerKey = str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($key, 5)))));
        $headers[$headerKey] = $value;
    }
}
$requestBody = file_get_contents('php://input');
$username = "YOUR_CALLBACK_USERNAME";
$password = "YOUR_CALLBACK_PASSWORD";


try {
    $callbackResponse = $phonepeClient->verifyCallbackResponse($headers, $requestBody, $username, $password);
    // Process the callback response
    echo "Callback state: " . $callbackResponse->getState();
} catch (PhonePe\common\exceptions\PhonePeException $e) {
    // Handle exceptions
    echo $e->getMessage();
}

Note: The getallheaders() function is not available in all PHP environments (e.g., Nginx). The example above provides a more reliable way to get the headers. In the $headers array, the Authorization header key will be available as Authorization.

Refunds

You can initiate a refund for a transaction using the refund method.

1. Initiate a Refund

use PhonePe\payments\v2\models\request\builders\StandardCheckoutRefundRequestBuilder;

$merchantRefundId = "REFUND-" . uniqid();
$originalMerchantOrderId = "ORDER-12345"; // The original order ID
$amount = 500; // Amount to refund in paise

$refundRequest = (new StandardCheckoutRefundRequestBuilder())
    ->merchantRefundId($merchantRefundId)
    ->originalMerchantOrderId($originalMerchantOrderId)
    ->amount($amount)
    ->build();

try {
    $refundResponse = $phonepeClient->refund($refundRequest);
    // Process the refund response
    echo "Refund state: " . $refundResponse->getState();
} catch (PhonePe\common\exceptions\PhonePeException $e) {
    // Handle exceptions
    echo $e->getMessage();
}

2. Check Refund Status

You can check the status of a refund using the getRefundStatus method.

try {
    $refundStatusResponse = $phonepeClient->getRefundStatus($merchantRefundId);
    // Process the refund status response
    echo "Refund status: " . $refundStatusResponse->getState();
} catch (PhonePe\common\exceptions\PhonePeException $e) {
    // Handle exceptions
    echo $e->getMessage();
}

Documentation

For detailed API documentation, advanced features, and integration options:

• PHP SDK Documentation
• PhonePe Developer Portal

Contributing

Contributions to the PhonePe PG SDK for PHP are welcome. Here's how you can contribute:

1. Fork the repository
2. Create a feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add some amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

Please ensure your code follows the project's coding standards and includes appropriate tests.

License

This project is licensed under the Apache License 2.0 - see the LICENSE file for details.

Copyright 2025 PhonePe Private Limited

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.