Payu Payment Gateway in Laravel

18-Mar-2025

Hello developers in this tutorial we will discuss about how to integrate Payu payment gateway

S.no	Contents-topics
1	What is payment gateway
2	Get the Payu Keys
3	Create PayuController
4	Route file
5	Create the payu.blade.php
6	Setup the .env
6	Run the code

1:What is Payment Gateway

A payment gateway is a technology that facilitates online payments by securely processing transactions between customers and businesses. It acts as a bridge between a merchant's website or app and the payment processor (bank, credit card network, or other financial institution).

How It Works:

Customer Initiates Payment → A buyer enters their payment details (credit/debit card, UPI, digital wallet, etc.) on a website or app.
Encryption & Authentication → The payment gateway encrypts the data and securely sends it to the payment processor.
Approval or Decline → The payment processor verifies the payment details with the issuing bank and returns an approval or decline response.
Transaction Completion → If approved, the funds are transferred to the merchant’s account.

2:Get the Payu Keys

On left sideBar scroll down and click on Developer

After Developer you will see payu_key and payu_salt copy these keys

SETUP AND INSTALL VUE JS 3

3:Create PayuController

Create a PayuController.php
code for PayuController.php : Copy

php artisan make:controller PayuController

code for PayuController.php Copy

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class PayuController extends Controller

{

public function payUMoneyView()

{

$MERCHANT_KEY = env('PAYU_MERCHANT_KEY');

$SALT = env('PAYU_SALT'); // TEST SALT

// $SALT = env('PAYUSALT_TEST'); // TEST SALT

$PAYU_BASE_URL = "https://test.payu.in";

// $PAYU_BASE_URL = "https://secure.payu.in"; // PRODUCATIONs

$name = 'Maanas';

$successURL = route('pay.u.response');

$failURL = route('pay.u.cancel');

$email = '[email protected]';

$amount = 100;

$productinfo = 'CodeWinthVineetMaaans';

$action = '';

$txnid = substr(hash('sha256', mt_rand() . microtime()), 0, 20);

$input['payment_id'] = $txnid;

$posted = array();

$posted = array(

'key' => $MERCHANT_KEY,

'txnid' => $txnid,

'amount' => $amount,

'firstname' => $name,

'email' => $email,

'productinfo' => $productinfo,

'surl' => $successURL,

'furl' => $failURL,

);

if (empty($posted['txnid'])) {

$txnid = substr(hash('sha256', mt_rand() . microtime()), 0, 20);

} else {

$txnid = $posted['txnid'];

}

$hash = '';

$hashSequence = "key|txnid|amount|productinfo|firstname|email|udf1|udf2|udf3|udf4|udf5|udf6|udf7|udf8|udf9|udf10";

if (empty($posted['hash']) && sizeof($posted) > 0) {

$hashVarsSeq = explode('|', $hashSequence);

$hash_string = '';

foreach ($hashVarsSeq as $hash_var) {

$hash_string .= isset($posted[$hash_var]) ? $posted[$hash_var] : '';

$hash_string .= '|';

}

$hash_string .= $SALT;

$hash = strtolower(hash('sha512', $hash_string));

$action = $PAYU_BASE_URL . '/_payment';

} elseif (!empty($posted['hash'])) {

$hash = $posted['hash'];

$action = $PAYU_BASE_URL . '/_payment';

}

return view('payu',compact('action','hash','MERCHANT_KEY','txnid','successURL','failURL','name','email','amount','productinfo'));

}

public function payUResponse(Request $request)

{

echo"<pre>";print_r($request->all());die();

$txnId = $request['txnid'];

$checkpayment = $this->checkPayuPayment($txnId);

if(isset($checkpayment->status) && $checkpayment->status == 1 && isset($checkpayment->transaction_details) && isset($checkpayment->transaction_details->$txnId) && $checkpayment->transaction_details->$txnId->status == 'success')

{

}

dd('Payment Successfully Done');

}

public function checkPayuPayment($txnid)

{

// $merchantKey = env('PAYUMERCHANT_KEY');

$merchantKey = env('PAYUMERCHANT_KEY_TEST');

// $salt = env('PAYUSALT'); // TEST SALT

$salt = env('PAYUSALT_TEST'); // TEST SALT

// $merchantKey = env('PAYUMERCHANT_KEY');

// $salt = env('PAYUSALT');

$command = "verify_payment";

$txnId = $txnid;

// Generate hash

$hashString = $merchantKey . "|" . $command . "|" . $txnId . "|" . $salt;

$hash = hash('sha512', $hashString);

// Prepare API request

$postData = [

"key" => $merchantKey,

"command" => $command,

"var1" => $txnId,

"hash" => $hash,

];

$url = "https://test.payu.in/merchant/postservice.php?form=2"; //test

// $url = "https://info.payu.in/merchant/postservice.php?form=2";

// cURL request

$ch = curl_init($url);

curl_setopt($ch, CURLOPT_POST, true);

curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($postData));

curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

$response = curl_exec($ch);

curl_close($ch);

// Parse response

$response = json_decode($response);

return $response;

}

public function payUCancel(Request $request)

{

dd($_GET);

dd('Payment Failed');

}

4:Route File

Copy the code for web.php

SETUP CUSTOM ROUTE FILE IN VUE JS 3

code for web.php :Copy

<?php

use Illuminate\Support\Facades\Route;

use App\Http\Controllers\PayuController;

|--------------------------------------------------------------------------

| Web Routes

|--------------------------------------------------------------------------

| Here is where you can register web routes for your application. These

| routes are loaded by the RouteServiceProvider and all of them will

| be assigned to the "web" middleware group. Make something great!

Route::get('/', function () {

return view('welcome');

});

// payu

Route::get('pay-u-money-view',[PayuController::class,'payUMoneyView']);

Route::post('pay-u-response',[PayuController::class,'payUResponse'])->name('pay.u.response');

Route::get('pay-u-cancel',[PayuController::class,'payUCancel'])->name('pay.u.cancel');

5:Create the Payu.blade.php

code for payu.blade.php Copy

<html>

<head>

<style>

/* General Styles */

body {

font-family: Arial, sans-serif;

margin: 0;

background-color: #f4f4f9;

}

/* Loading Icon */

#loading {

position: fixed;

top: 0;

left: 0;

width: 100%;

height: 100%;

background: rgba(0, 0, 0, 0.5);

display: flex;

justify-content: center;

align-items: center;

z-index: 999;

}

.loader {

border: 8px solid #f3f3f3; /* Light grey */

border-top: 8px solid #3498db; /* Blue */

border-radius: 50%;

width: 50px;

height: 50px;

animation: spin 1s linear infinite;

}

/* Spinner Animation */

@keyframes spin {

0% {

transform: rotate(0deg);

}

100% {

transform: rotate(360deg);

}

/* Content Hidden During Loading */

body.hidden {

visibility: hidden;

}

</style>

</head>

Processing Payment.....

</div>

<!-- <label>Service Provider</label>

<?php

if(!$hash) { ?>

<?php } ?>

</form>

var payuForm = document.forms.payuForm;

payuForm.submit();

document.addEventListener('DOMContentLoaded', () => {

const loadingDiv = document.getElementById('loading');

// Simulate some delay (e.g., loading resources)

setTimeout(() => {

loadingDiv.style.display = 'none';

document.body.classList.remove('hidden');

}, 10000); // 3 seconds

});

</script>

</body>

</html>

6:Setup the .env

Add code for .env Copy

PAYU_MERCHANT_KEY=PayuMerchant

PAYU_SALT=PayuSalt

6:Run the Code

php artisan serve

127.0.0.1:8000/pay-u-money-view

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Vineet Maanas

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