Table of Contents
php延迟静态绑定实例分析,延迟静态实例分析
Jun 13, 2016 am 09:15 AM
php
Delay
binding
static
php延迟静态绑定实例分析,延迟静态实例分析
本文实例讲述了php延迟静态绑定的方法。分享给大家供大家参考。具体分析如下:
php延迟静态绑定:指类的self,不是以定义时为准,而是以计算时的运行结果为准。先看一个实例
<?php header("content-type:text/html;charset=utf-8"); class Human{ public static function hei(){ echo "我是父类的hei()方法"; } public function say(){//如果子类调用父类的say()方法,则 self::hei();//这里调用的是父类的hei()方法 static::hei(); //这里调用子类的hei()方法,如果子类不存在hei()方法,则调用父类的 } } class Stu extends Human{ public static function hei(){ echo "我是子类的hei()方法"; } } $stu = new Stu(); $stu->say(); ?>
Copy after login
说明:
(1)子类实例化对象 $stu 调用say方法时,是在父类Human内运行的,所以,say()里的self::hei()是调用父类的hei()方法。
(2)static::方法名():使用static关键词,则首先是在子类里查找该方法;如果找不到,则到父类中查找。
希望本文所述对大家的php程序设计有所帮助。
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot Article
Repo: How To Revive Teammates
3 weeks ago
By 尊渡假赌尊渡假赌尊渡假赌
How Long Does It Take To Beat Split Fiction?
3 weeks ago
By DDD
R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
1 weeks ago
By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
3 weeks ago
By 尊渡假赌尊渡假赌尊渡假赌

Hot tools Tags

Hot Article
Repo: How To Revive Teammates
3 weeks ago
By 尊渡假赌尊渡假赌尊渡假赌
How Long Does It Take To Beat Split Fiction?
3 weeks ago
By DDD
R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
1 weeks ago
By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
3 weeks ago
By 尊渡假赌尊渡假赌尊渡假赌

Hot Article Tags

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian

How To Set Up Visual Studio Code (VS Code) for PHP Development
