**一.Class魔术常量语法** ~~~ ::class ~~~ **二.实例** 1.static中的本类 ~~~ public static function say(){ echo self::class; } ~~~ 2.普通方法中获取本类名 ~~~ public function show(){ echo $this::class; } public function show(){ echo self::class; } ~~~ 3.外类获取类名 ~~~ echo Person::class; echo $obj::class; ~~~