<?php
use Payum\Core\Request\Capture;
use Payum\Core\Request\GetHumanStatus;
use Payum\Core\Model\Order;
use Payum\Offline\PaymentFactory as OfflinePaymentFactory;

$order = new Order;
$order->setTotalAmount(100);
$order->setCurrencyCode('USD');

$payment = (new OfflinePaymentFactory())->create();

$payment->execute(new Capture($order));
$payment->execute($status = new GetHumanStatus($order));

$status->isCaptured();

<?php
use Payum\Core\Request\Capture;
use Payum\Core\Request\GetHumanStatus;
use Payum\Core\Model\Order;
use Payum\Paypal\ExpressCheckout\PaymentFactory as PaypalPaymentFactory;

$order = new Order;
$order->setTotalAmount(100);
$order->setCurrencyCode('USD');

$payment = (new PaypalPaymentFactory())->create();

try {
    $payment->execute(new Capture($order));
    $payment->execute($status = new GetHumanStatus($order));
    
    $status->isCaptured();
} catch (HttpRedirectReply $reply) {
    header("Location: ".$reply->getUrl());
    exit;
}

<?php
var_dump($order->getDetails());

<?php
use Payum\Core\Request\Authorize;
use Payum\Core\Request\Cancel;
use Payum\Core\Request\Refund;

$payment->execute(new Authorize($order));

$payment->execute(new Refund($order));

$payment->execute(new Cancel($order));

<?php
use Payum\Core\Storage\FilesystemStorage;
use Payum\Core\Extension\StorageExtension;
use Payum\Core\Model\Order;

$order = new Order;
$order->setTotalAmount(100);
$order->setCurrencyCode('USD');
$order->setNumber(uniqid());

$storage = new FilesystemStorage(sys_get_temp_dir(), get_class($order), 'number');

$payment->addExtension(new StorageExtension($storage));

// do execute