ClosureRunner example

if (!\is_callable($application)) {
                throw new \LogicException(sprintf('"%s" doesn\'t know how to handle apps of type "%s".', get_debug_type($this), get_debug_type($application)));
            }

            $application = $application(...);
        }

        if ($_SERVER[$this->options['debug_var_name']] && ($r = new \ReflectionFunction($application)) && $r->getNumberOfRequiredParameters()) {
            throw new \ArgumentCountError(sprintf('Zero argument should be required by the runner callable, but at least one is in "%s" on line "%d.', $r->getFileName(), $r->getStartLine()));
        }

        return new ClosureRunner($application);
    }

    protected function getArgument(\ReflectionParameter $parameter, ?string $type): mixed
    {
        if ('array' === $type) {
            switch ($parameter->name) {
                case 'context':
                    $context = $_SERVER;

                    if ($_ENV && !isset($_SERVER['PATH']) && !isset($_SERVER['Path'])) {
                        $context += $_ENV;
                    }

use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Runtime\Runner\ClosureRunner;
use Symfony\Component\Runtime\RunnerInterface;
use Symfony\Component\Runtime\SymfonyRuntime;

require __DIR__.'/autoload.php';

$runtime = new class(['project_dir' => __DIR__]) extends SymfonyRuntime {
    public function getRunner(?object $kernel): RunnerInterface
    {
        return new ClosureRunner(static function D) use ($kernel): int {
            $kernel->handle(new Request())->send();
            echo "\n";
            $kernel->handle(new Request())->send();
            echo "\n";

            return 0;
        });
    }
};

[$app, $args] = $runtime->getResolver(require __DIR__.'/kernel.php')->resolve();