关于类继承函数重载的有关问题?大神进
关于类继承函数重载的问题?大神进
- PHP code
<!-- Code highlighting produced by Actipro CodeHighlighter (freeware) http://www.CodeHighlighter.com/ --> class a { function a() { ... } function select() { ... } } class b extends a { function b() { ... } function select() { //这里能调用a类的select函数,但是我的感觉好像写法不规范,老感觉会死循环.. $this->select(); //是不是有别的写法 //这写法 $a = new a(); $a->select();是不是比较耗内存,重新定义了一个对象) } }
------解决方案--------------------
只能这样写
parent::select();
$this->select();
这样写就是递归了
除非你确有需要,不然就锁死了
------解决方案--------------------
$this代表的本身,如果想调用你类的话,就用parent::,你这样写是重写了自己.

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

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

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

Concepts and instances of classes and methods Class (Class): used to describe a collection of objects with the same properties and methods. It defines the properties and methods common to every object in the collection. Objects are instances of classes. Method: Function defined in the class. Class construction method __init__(): The class has a special method (construction method) named init(), which is automatically called when the class is instantiated. Instance variables: In the declaration of a class, attributes are represented by variables. Such variables are called instance variables. An instance variable is a variable modified with self. Instantiation: Create an instance of a class, a specific object of the class. Inheritance: that is, a derived class (derivedclass) inherits the base class (baseclass)

Function means function. It is a reusable code block with specific functions. It is one of the basic components of a program. It can accept input parameters, perform specific operations, and return results. Its purpose is to encapsulate a reusable block of code. code to improve code reusability and maintainability.

Asynchronous processing method of SelectChannelsGo concurrent programming using golang Introduction: Concurrent programming is an important area in modern software development, which can effectively improve the performance and responsiveness of applications. In the Go language, concurrent programming can be implemented simply and efficiently using Channels and Select statements. This article will introduce how to use golang for asynchronous processing methods of SelectChannelsGo concurrent programming, and provide specific

jQuery is a classic JavaScript library that is widely used in web development. It simplifies operations such as handling events, manipulating DOM elements, and performing animations on web pages. When using jQuery, you often encounter situations where you need to replace the class name of an element. This article will introduce some practical methods and specific code examples. 1. Use the removeClass() and addClass() methods jQuery provides the removeClass() method for deletion

How to hide the select element in jquery: 1. hide() method, introduce the jQuery library into the HTML page, you can use different selectors to hide the select element, the ID selector replaces the selectId with the ID of the select element you actually use; 2. css() method, use the ID selector to select the select element that needs to be hidden, use the css() method to set the display attribute to none, and replace selectId with the ID of the select element.

Inobject-orientedprogramming,inheritanceallowsustocreatenewclassesthatinheritthepropertiesandmethodsofanexistingclass.Thispowerfulconceptenablescodereuse,modularity,andextensibilityinourprograms.Beforedivingintoaccessingparentclassattributes,let'shav

Background Recently, key business codes have been encrypted for the company framework to prevent the engineering code from being easily restored through decompilation tools such as jd-gui. The configuration and use of the related obfuscation scheme are relatively complex and there are many problems for the springboot project, so the class files are encrypted and then passed The custom classloder is decrypted and loaded. This solution is not absolutely safe. It only increases the difficulty of decompilation. It prevents gentlemen but not villains. The overall encryption protection flow chart is shown in the figure below. Maven plug-in encryption uses custom maven plug-in to compile. The class file specified is encrypted, and the encrypted class file is copied to the specified path. Here, it is saved to resource/corecla.

When writing PHP code, using classes is a very common practice. By using classes, we can encapsulate related functions and data in a single unit, making the code clearer, easier to read, and easier to maintain. This article will introduce the usage of PHPClass in detail and provide specific code examples to help readers better understand how to apply classes to optimize code in actual projects. 1. Create and use classes In PHP, you can use the keyword class to define a class and define properties and methods in the class.
