require_once __DIR__ . "/vendor/autoload.php";

use Matscode\Paystack\Paystack;

$paystackSecret = 'sk_test_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx';
$Paystack = new Paystack($paystackSecret);

$response = $Paystack->transaction->initialize([
            'email'  => '[email protected]',
            'amount' => 500000, // amount is in kobo
            'callback_url' => 'https://www.app.local/paystack/transaction/verify'
        ]);

// Set data to post using this method
$response = $Paystack->transaction
            ->setCallbackUrl('https://www.app.local/paystack/transaction/verify')
            ->setEmail('[email protected]')
            ->setAmount(75000) // amount is treated in Naira while using this setAmount() method
            ->initialize();

// recommend to save Transaction reference in database and do a redirect
header('Location: ' . $response->data->authorization_url);

$reference_code = $_GET['reference']
$response = $Paystack->transaction->verify($reference_code);

// This method does the check for you and return `(bool) true|false` 
$response = $Paystack->transaction->isSuccessful($reference_code);

$response = $Paystack->bank->list();

$bank_code='0000';
$account_number='0987654321'
$response = $Paystack->bank->resolve($bank_code, $account_number); 
//result: returns account information is found, throws exception otherwise