html.blade.php

<form method="POST" action="https://vpos.qnbfinansbank.com/Gateway/Default.aspx"
      class="space-y-6">
    <input type="hidden" name="MbrId" value="{{ $payfor3D->MbrId }}">
    <input type="hidden" name="MerchantID" value="{{ $payfor3D->MerchantID }}">
    <input type="hidden" name="UserCode" value="{{ $payfor3D->UserCode }}">
    <input type="hidden" name="UserPass" value="{{ $payfor3D->UserPass }}">
    <input type="hidden" name="SecureType" value="{{ $payfor3D->SecureType }}">
    <input type="hidden" name="TxnType" value="{{ $payfor3D->TxnType }}">
    <input type="hidden" name="InstallmentCount" value="{{ $payfor3D->InstallmentCount }}">
    <input type="hidden" name="Currency" value="{{ $payfor3D->Currency }}">
    <input type="hidden" name="OkUrl" value="{{ $payfor3D->OkUrl }}">
    <input type="hidden" name="FailUrl" value="{{ $payfor3D->FailUrl }}">
    <input type="hidden" name="OrderId" value="{{ $payfor3D->OrderId }}">
    <input type="hidden" name="PurchAmount" value="{{ $payfor3D->PurchAmount }}">
    <input type="hidden" name="Lang" value="{{ $payfor3D->Lang }}">
    <input type="hidden" name="Rnd" value="{{ $payfor3D->rnd }}">
    <input type="hidden" name="Hash" value="{{ $payfor3D->hash }}">
    <div>
        <label for="card-number" class="block text-sm font-medium text-gray-700">
            KART NUMARASI
        </label>
        <div class="mt-1">
            <x-input id="pan" name="Pan" type="text" value="{{ old('Pan', '4155650100416111') }}"
                     required></x-input>
        </div>
    </div>

    <div>
        <label for="card-holder-name" class="block text-sm font-medium text-gray-700">
            KART SAHİBİ
        </label>
        <div class="mt-1">
            <x-input id="card-holder-name" name="CardHolderName" type="text"
                     value="{{ old('CardHolderName', 'UMUT YEREBAKMAZ') }}" required></x-input>
        </div>
    </div>

    <div class="grid grid-cols-2 gap-4">
        <div>
            <label for="expiry" class="block text-sm font-medium text-gray-700">
                SON KULLANMA TARİHİ (AAYY)
            </label>
            <div class="mt-1">
                <x-input id="expiry" name="Expiry" type="text" value="{{ old('Expiry', '0125') }}"
                         required></x-input>
            </div>
        </div>
        <div>
            <label for="cvv2" class="block text-sm font-medium text-gray-700">
                GÜVENLİK KODU (CVV)
            </label>
            <div class="mt-1">
                <x-input id="cvv2" name="Cvv2" maxlength="4" type="text"
                         value="{{ old('Cvv2', '123') }}" required></x-input>
            </div>
        </div>
    </div>

    <div class="flex items-center justify-between">
        <x-buttons.secondary-md>
            Ödeme Yap
        </x-buttons.secondary-md>
    </div>
</form>

Payfor3D.php

<?php

namespace App\Classes;

class Payfor3D
{
    public string $MbrId = '5';
    public string $MerchantID = '085300000009704';
    public string $MerchantPass = '12345678';
    public string $UserCode = 'QNB_API_KULLANICI_3DPAY';
    public string $UserPass = 'UcBN0';
    public string $SecureType = '3DPay';
    public string $TxnType = 'Auth';
    public string $InstallmentCount = '0';
    public string $PurchAmount = '1'; // must be .00
    public string $Currency = '949';
    public string $OkUrl = 'https://vpostest.qnbfinansbank.com/Gateway/3DHost.aspx';
    public string $FailUrl = 'https://vpostest.qnbfinansbank.com/Gateway/3DHost.aspx ';
    public string $OrderId = 'PP1';
    public string $Lang = 'TR';
    public string $rnd = '';
    public string $hash = '';

    public function __construct()
    {
        $this->hash();
    }
  
    private function hash()
    {
        $microtime = microtime();
        $this->rnd = preg_replace('/(0)\.(\d+) (\d+)/', '$3$1$2', $microtime);
        $hashtr = $this->MbrId . $this->OrderId . $this->PurchAmount . $this->OkUrl . $this->FailUrl .
            $this->TxnType . $this->InstallmentCount . $this->rnd . $this->MerchantPass;
        $this->hash = base64_encode(pack('H*', sha1($hashtr)));
    }
}