Backend DevelopmentPHP ProblemWhat is the method of calling the parent class constructor in php?
php calls the parent class constructor: first, the parent class constructs the function first, the code is [public function __construct()]; then use [parent::__construct()] to call the parent class constructor.
php calls the parent class constructor method:
1. Use the function [parent::__construct()] to call The parent class constructor
code is as follows;
<?php
class MyClass //父类
{
public function __construct() //父类构造函数
{
echo "父类的构造函数";
}
}
class ChildClass extends MyClass //子类
{
public function __construct() //子类构造函数
{
echo "子类的构造函数"."<br>";
parent::__construct(); //调用父类构造函数
}
}
$childClass = new ChildClass(); //对类的实例化
?>2. Running results
Constructor of the subclass
Constructor of the parent class
Related learning recommendations:php programming(video)
The above is the detailed content of What is the method of calling the parent class constructor in php?. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.
SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.
DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software
Dreamweaver CS6
Visual web development tools
