ContainerAwareCoreGatewayFactory.php

<?php

namespace Payum\Bundle\PayumBundle;

use Payum\Core\Bridge\Spl\ArrayObject;
use Payum\Core\CoreGatewayFactory;
use Symfony\Component\DependencyInjection\ContainerInterface;

class ContainerAwareCoreGatewayFactory extends CoreGatewayFactory
{
    private ContainerInterface $container;

    public function __construct(ContainerInterface $container, array $defaultConfig = [])
    {
        $this->container = $container;

        parent::__construct($defaultConfig);
    }

    protected function buildClosures(ArrayObject $config): void
    {
        foreach ($config as $name => $value) {
            if (! $value || ! is_string($value)) {
                continue;
            }

            $match = [];
            if (preg_match('/^%(.*?)%$/', $value, $match)) {
                $config[$name] = $value = $this->container->getParameter($match[1]);
            }

            if ('@' === $value[0] && $this->container->has(substr($value, 1))) {
                $config[$name] = $value = $this->container->get(substr($value, 1));
            }
        }

        parent::buildClosures($config);
    }
}