Laravel_V4_Request

Laravel/Application.php

Call route's action

Calls route before filters

Laravel/Route.php

Find route

Calls 'down' listener if needed

Calls shutdown callbacks

Call Router's dispatch

Calls route after filters

public/index.php

Laravel/router.php

Terminate middleware

Run route

Pass Response up middleware

send Response to user

1.Call 'down' listener if needed 主要指是否处于Maintenance Mode Handler，然后继续执行。2.App filter包含App::before()与App::after()。3. Middleware shutdown继承自TerminableInterface接口。4.Finish callbacks使用App::finish()。5.Shutdown callbacks使用App::shutdown()。

All Done

Calls app after filters

Call app before filters

Call finish callbacks