Laravel中的Exception与Throwable各自负责什么样的任务

Question

下面的是框架的源码 我想知道源代码中为什么多了一个Throwable？平时写代码都是用Exception的。还请各路大神指教！

Answer 1

Throwable = Exception + Error

Answer 2

Throwable 是 php7 新增的顶级异常 interface，包含了 Error 和 Exception。

Throwable is the base interface for any object that can be thrown via
a throw statement in PHP 7, including Error and Exception.

PHP classes cannot implement the Throwable interface directly, and
must instead extend Exception.