Laravel中类中的构造函数传参是可以自动new一个传递进去的吗？

Question

这是Laravel中Auth\Guard的构造函数：
/**
*Createanewauthenticationguard.
*
*@param\Illuminate\Auth\UserProviderInterface$provider
*@param\Illuminate\Session\Store$session
*@param\Symfony\Component\HttpFoundation\Request$request
*@returnvoid
*/
publicfunction__construct(UserProviderInterface$provider,
SessionStore$session,
Request$request=null)
{
$this->session=$session;
$this->request=$request;
$this->provider=$provider;
}
其中传入了参数SessionStore$session
但是session的构造函数是这样的:
publicfunction__construct($name,SessionHandlerInterface$handler,$id=null)
{
$this->setId($id);
$this->name=$name;
$this->handler=$handler;
$this->metaBag=newMetadataBag;
}
这里是有参数的，为什么Guard的构造函数可以自动生成session?
是php原生提供的还是Laravel提供的?

Answer 1

/***CreateaninstanceoftheEloquentdriver.**@return\Illuminate\Auth\Guard*/publicfunctioncreateEloquentDriver(){$provider=$this->createEloquentProvider();returnnewGuard($provider,$this->app['session.store']);}