参考：https://www.jetbrains.com/help/phpstorm/2016.3/symbols.html

Icon

	Description
	Class 类
	Final class  不可继承类
	Abstract class 抽象类
	Interface 接口
	PHP trait
	Test case
	Method/function 方法
	Method/function in an interface
	Variable in tool windows and dialogs 变量
	Variable in completion lists
	Constant
	Field
	Property 属性
	Parameter 方法参数
	Element
	Directory
	Source root
	Test root
	Resource root
	Excluded root
	Exception
Visibility modifiers
	Private 私有
	Protected
	Public

考虑换下webstorm试试了.