PHP this.self.parent的区别

知其黑、受其白发布时间：2021-03-08 19:23:03 ，浏览量：0

阅读目录

instanceof 判断对象是否是类的实例
is_subclass_of — 如果此对象是该类的子类，则返回 TRUE
self 应用技巧

在这里插入图片描述

instanceof 判断对象是否是类的实例

作用：

（1）判断一个对象是否是某个类的实例，（2）判断一个对象是否实现了某个接口。

第一种用法：


    
        
        
        
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