PHP中一个文档中没有的特色[转自奥索]
PHP中的面向对象功能支持 C++ 式的 :: 运算符号!!!
//孤狼:这个::在PEAR中可是频频出现,第一次见的时候搞的我莫名其妙 :)
这个特色文档没有任何说明,但是却有着很好的使用价值。
举一个简单的例子:
比如你以前有很多收集的函数库,你想转向 OOP 方式编程,但是还不能做到完全的封装。 这个特色提供你一个OOP风格的实现。
你定义一个 Util 类:
class Util {
//将所有的函数剪辑到这里
//这个类可以没有任何成员函数
}
然后在你原先使用函数的地方,比如 someFunction(), 修改成:
Util::someFunction(). 这对你需要封装,但是不需要任何成员函数非常有用。

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)

Class is a keyword in Python, used to define a class. The method of defining a class: add a space after class and then add the class name; class name rules: capitalize the first letter. If there are multiple words, use camel case naming, such as [class Dog()].

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

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.

Vue error: Unable to use v-bind to bind class and style correctly, how to solve it? In Vue development, we often use the v-bind instruction to dynamically bind class and style, but sometimes we may encounter some problems, such as being unable to correctly use v-bind to bind class and style. In this article, I will explain the cause of this problem and provide you with a solution. First, let’s understand the v-bind directive. v-bind is used to bind V

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.

How jquery determines whether an element has a class: 1. Determine whether an element has a certain class through the "hasClass('classname')" method; 2. Determine whether an element has a certain class through the "is('.classname')" method.

What is object-oriented programming? Object-oriented programming (OOP) is a programming paradigm that abstracts real-world entities into classes and uses objects to represent these entities. Classes define the properties and behavior of objects, and objects instantiate classes. The main advantage of OOP is that it makes code easier to understand, maintain and reuse. Basic Concepts of OOP The main concepts of OOP include classes, objects, properties and methods. A class is the blueprint of an object, which defines its properties and behavior. An object is an instance of a class and has all the properties and behaviors of the class. Properties are characteristics of an object that can store data. Methods are functions of an object that can operate on the object's data. Advantages of OOP The main advantages of OOP include: Reusability: OOP can make the code more
