**一.ReflectionParameter::getClass弃用** 1.代码实例 ``` function foo(Exception $e) { } $functionReflection = new ReflectionFunction('foo'); $parameters = $functionReflection->getParameters(); $eParameter = $parameters[0]; echo $eParameter->getClass()->name; ``` 1.低版本(5.6) ``` Exception ``` 2.新版本(8.0) ``` Deprecated: Method ReflectionParameter::getClass() is deprecated ```