The implementations emit() method iterates itself.
When iterating the stack, the first emitter to return a value that is not
identical to boolean false will short-circuit iteration.
/**
* Create and return an Application instance.
*
* Will inject the instance with the container and/or router when provided;
* otherwise, it will use a ZF2 ServiceManager instance and the FastRoute
* router bridge.
*
* The factory also injects the Application with an Emitter\EmitterStack that
* composes a SapiEmitter at the bottom of the stack (i.e., will execute last
* when the stack is iterated).
*
* @param null|ContainerInterface $container IoC container from which to
* fetch middleware defined as services; defaults to a ServiceManager
* instance
* @param null|Router\RouterInterface $router Router implementation to use;
* defaults to the FastRoute router bridge.
* @return Application
*/
public static function create(ContainerInterface $container = null, Router\RouterInterface $router = null)
{
$container = $container ?: new ServiceManager();
$router = $router ?: new Router\FastRouteRouter();
$emitter = new Emitter\EmitterStack();
$emitter->push(new SapiEmitter());
return new Application($router, $container, null, $emitter);
}
public function build($env = null) : Application
{
$this->env = $env;
$router = new FastRouteRouter();
$finalHandler = new FinalHandler();
$emitter = new EmitterStack();
if ($this->useSAPIEmitter) {
$emitter->push(new SapiEmitter());
} else {
$emitter->push(new PHPUnitEmitter());
}
foreach ($this->initScripts as $initScriptClassName) {
$script = new $initScriptClassName();
$script($this);
}
$app = new Application($router, $this->container, $finalHandler, $emitter);
foreach ($this->initAppScripts as $initAppScriptClassName) {
$script = new $initAppScriptClassName();
$script($app);
}
$this->container->set(Application::class, $app);
return $app;
}
/**
* Create the default emitter stack.
*
* @return EmitterStack
*/
private function createEmitterStack()
{
$emitter = new EmitterStack();
$emitter->push(new SapiEmitter());
return $emitter;
}
<?php
/** @var \Zend\Expressive\Application $application */
use Zend\Diactoros\Response\SapiEmitter;
use Zend\Expressive\Emitter\EmitterStack;
use Zend\Expressive\Router\FastRouteRouter;
use Zend\ServiceManager\ServiceManager;
$application = (require __DIR__ . '/../../backend/bootstrap/bootstrap.php');
$container = new ServiceManager();
$router = new FastRouteRouter();
$emitter = new EmitterStack();
$emitter->push(new SapiEmitter());
$RESTApiApplication = new \Zend\Expressive\Application($router, $container, new \CASS\Application\Bootstrap\FinalHandler(), $emitter);
$RESTApiApplication->pipe('/backend/api', $application);
$RESTApiApplication->pipeRoutingMiddleware();
$RESTApiApplication->pipeDispatchMiddleware();
$RESTApiApplication->run();
