STRIPE_PUBLISHABLE_KEY=PASTE_PUBLISHABLE_KEY
STRIPE_SECRET_KEY=PASTE_SECRET_KEY
STRIPE_CURRENCY=USD

public function up()
{
    Schema::create('payments', function (Blueprint $table) {
        $table->bigIncrements('id');
        $table->string('payment_id');
        $table->string('payer_email');
        $table->float('amount', 10, 2);
        $table->string('currency');
        $table->string('payment_status');
        $table->timestamps();
    });
}

<link rel="stylesheet" href="{{ asset('/css/style.css') }}" />
<script src="https://js.stripe.com/v3/"></script>
<form action="{{ url('charge') }}" method="post" id="payment-form">
    <div class="form-row">
        <p><input type="text" name="amount" placeholder="Enter Amount" /></p>
        <p><input type="email" name="email" placeholder="Enter Email" /></p>
        <label for="card-element">
        Credit or debit card
        </label>
        <div id="card-element">
        <!-- A Stripe Element will be inserted here. -->
        </div>
     
        <!-- Used to display form errors. -->
        <div id="card-errors" role="alert"></div>
    </div>
    <button>Submit Payment</button>
    {{ csrf_field() }}
</form>
<script>
var publishable_key = '{{ env('STRIPE_PUBLISHABLE_KEY') }}';
</script>
<script src="{{ asset('/js/card.js') }}"></script>

Route::get('/payment', 'PaymentController@index');
Route::post('/charge', 'PaymentController@charge');

// Create a Stripe client.
var stripe = Stripe(publishable_key);
 
// Create an instance of Elements.
var elements = stripe.elements();
 
// Custom styling can be passed to options when creating an Element.
// (Note that this demo uses a wider set of styles than the guide below.)
var style = {
    base: {
        color: '#32325d',
        fontFamily: '"Helvetica Neue", Helvetica, sans-serif',
        fontSmoothing: 'antialiased',
        fontSize: '16px',
        '::placeholder': {
            color: '#aab7c4'
        }
    },
    invalid: {
        color: '#fa755a',
        iconColor: '#fa755a'
    }
};
 
// Create an instance of the card Element.
var card = elements.create('card', {style: style});
 
// Add an instance of the card Element into the `card-element` <div>.
card.mount('#card-element');
 
// Handle real-time validation errors from the card Element.
card.addEventListener('change', function(event) {
    var displayError = document.getElementById('card-errors');
    if (event.error) {
        displayError.textContent = event.error.message;
    } else {
        displayError.textContent = '';
    }
});
 
// Handle form submission.
var form = document.getElementById('payment-form');
form.addEventListener('submit', function(event) {
    event.preventDefault();
 
    stripe.createToken(card).then(function(result) {
        if (result.error) {
            // Inform the user if there was an error.
            var errorElement = document.getElementById('card-errors');
            errorElement.textContent = result.error.message;
        } else {
            // Send the token to your server.
            stripeTokenHandler(result.token);
        }
    });
});
 
// Submit the form with the token ID.
function stripeTokenHandler(token) {
    // Insert the token ID into the form so it gets submitted to the server
    var form = document.getElementById('payment-form');
    var hiddenInput = document.createElement('input');
    hiddenInput.setAttribute('type', 'hidden');
    hiddenInput.setAttribute('name', 'stripeToken');
    hiddenInput.setAttribute('value', token.id);
    form.appendChild(hiddenInput);
 
    // Submit the form
    form.submit();
}

.StripeElement {
    box-sizing: border-box;
    
    height: 40px;
    
    padding: 10px 12px;
    
    border: 1px solid transparent;
    border-radius: 4px;
    background-color: white;
    
    box-shadow: 0 1px 3px 0 #e6ebf1;
    -webkit-transition: box-shadow 150ms ease;
    transition: box-shadow 150ms ease;
}
 
.StripeElement--focus {
    box-shadow: 0 1px 3px 0 #cfd7df;
}
 
.StripeElement--invalid {
    border-color: #fa755a;
}
 
.StripeElement--webkit-autofill {
    background-color: #fefde5 !important;
}

<?php
 
namespace App\Http\Controllers;
 
use Illuminate\Http\Request;
use Omnipay\Omnipay;
use App\Models\Payment;
 
class PaymentController extends Controller
{
    public function index()
    {
        return view('payment');
    }
 
    public function charge(Request $request)
    {
        if ($request->input('stripeToken')) {
 
            $gateway = Omnipay::create('Stripe');
            $gateway->setApiKey(env('STRIPE_SECRET_KEY'));
          
            $token = $request->input('stripeToken');
          
            $response = $gateway->purchase([
                'amount' => $request->input('amount'),
                'currency' => env('STRIPE_CURRENCY'),
                'token' => $token,
            ])->send();
          
            if ($response->isSuccessful()) {
                // payment was successful: insert transaction data into the database
                $arr_payment_data = $response->getData();
                 
                $isPaymentExist = Payment::where('payment_id', $arr_payment_data['id'])->first();
          
                if(!$isPaymentExist)
                {
                    $payment = new Payment;
                    $payment->payment_id = $arr_payment_data['id'];
                    $payment->payer_email = $request->input('email');
                    $payment->amount = $arr_payment_data['amount']/100;
                    $payment->currency = env('STRIPE_CURRENCY');
                    $payment->payment_status = $arr_payment_data['status'];
                    $payment->save();
                }
 
                return "Payment is successful. Your payment id is: ". $arr_payment_data['id'];
            } else {
                // payment failed: display message to customer
                return $response->getMessage();
            }
        }
    }
}