send responeto client
clean up
Create laravelApplicationinstance
Registermiddlewares
Register autoload
LoadApplicationservicecontainer
包含以下几方面before middlewaremiddlewarescontroller action/closuremiddlewaresafter middleware
app/http/kernal.php
vendor/autoload.php
loadbootstrapers
bootstrap/autoload.php
Kernal terminate
所有请求的入口
bootstrap/app.php
capture and create http request object 包含内容1：configure error handling 配置错误信息2：loading configuration 加载配置3：configure logs 配置日志4：detect application environment 检测程序环境5：register facades 注册门面6：register providers 注册服务提供者 例如：bootstrap database validation等7：boot providers 启动服务提供者
bind http/console/exception interface
Register composernegratedautoload
public/index.php
capture and create httprequest object
CreateHTTPKernal
通过composer的autoload控制加载类
handlerequest
1:所有的请求进入HTTP kernal或者console kernal2：处理Request，产生Response
