Stack.php

<?php

public function run(Request $request)
{
	$this->container = $this->container ?: new Container;

	return call_user_func(
		array_reduce(array_reverse($this->middlewares), function($stack, $middleware)
		{
			return function($request) use ($stack, $middleware)
			{
				return $this->container->make($middleware)->handle($request, $stack);
			};
		},
	 	function() use ($request)
	 	{
			return call_user_func($this->app, $request);
		}),
	$request);
}