10 recommended articles on implementing multiple inheritance

Before introducing the interface, we need to know why we need to use the interface. Here we will introduce it to you. So why use interfaces? Among computer languages, only a few object-oriented ones support multiple inheritance. The PHP language we are learning, like most languages, does not support multiple inheritance. To put it bluntly, a parent class can have multiple subclasses, but a subclass can only have one parent class. What is multiple inheritance? Multiple inheritance is a subclass that inherits two or more parent classes. This is multiple inheritance, which is not allowed in PHP. If we want to implement multiple inheritance in PHP, then we have to use interfaces. Interfaces can be seen as a solution to multiple inheritance. PHP's object-oriented interface is similar to other object-oriented language interfaces. Introduction to the syntax of interface classes: Interface classes are declared through the interface keyword, and the class can only contain unimplemented methods and some member variables. The format is as follows: interface InterfaceName{ function interfaceName1(){ } function interfaceName2(

1. PHP object-oriented multiple inheritance and interface usage

Introduction: Before introducing interfaces, we need to know why we use interfaces. Here we will introduce them to you. Among computer languages, only a few object-oriented languages ​​support multiple inheritance. The PHP language and most languages ​​​​we learn. Likewise, multiple inheritance is not supported. To put it bluntly, a parent class can have multiple subclasses, but a subclass can only have one parent class. What is multiple inheritance? It is a subclass that inherits two or more parents. Classes are multiple inheritance, which are not allowed in PHP. If we want to implement multiple inheritance in PHP, we must use interfaces. Interfaces can be regarded as the object-oriented method of PHP. The interface is similar to other object-oriented language interfaces

##2. Detailed introduction to Java internal classes

## Introduction: Multiple inheritance means that a class can inherit behaviors and characteristics from more than one parent class at the same time. However, we know that Java only allows single inheritance in order to ensure data security. . But sometimes, we really need to implement multiple inheritance. Fortunately, Java provides us with two ways to implement multiple inheritance: interfaces and inner classes. One of the most important functions is inner classes. Implement multiple inheritance. In addition, inner classes can also implement hiding (private member inner classes). There are four types of inner classes, namely member inner classes, static inner classes, and anonymous inner classes.

3.

Java Improvement Part 8 -----Realizing Multiple Inheritance

Introduction: Multiple inheritance means that a class can inherit behaviors and characteristics from more than one parent class at the same time. However, we know that Java only allows single inheritance in order to ensure data security. Sometimes we think that if multiple inheritance needs to be used in the system, it is often a bad design. At this time, what we often need to think about is not how to use multiple inheritance, but whether there are problems with your design. But sometimes we do need to implement multiple inheritance. , and such situations really exist in real life, such as inheritance: we inherit both the behavior and characteristics of our father and the behavior and characteristics of our mother. Fortunately, Java is very kind and understanding of us, and it provides Two ways for us to achieve multiple inheritance: interface and internal

4.

C# Learning Diary 26---Interface Type

Introduction: An interface contains the definition of a set of related functions that a class or structure can implement. For example, using an interface you can include in a class from multiple source behavior. Since the C# language does not support multiple inheritance, multiple inheritance can be achieved through interfaces. In short, the interface only contains the declaration of members (properties, events, indexers). How the definition of a member is implemented is determined by its derived class.

5. Programmers share their learning experience about PHP interface_PHP tutorial

Introduction: Programmers share their learning experience about PHP interface experience. LieHuo.Net network programming recently encountered difficulties in the process of learning the PHP5 interface. The book says it is a way to implement multiple inheritance, but I still don’t know how to implement it

6. Learning of PHP interface_PHP tutorial

Introduction: Learning of PHP interface. Recently, I encountered difficulties in the process of learning the PHP 5 interface (as the current mainstream development language). The book said it is a way to implement multiple inheritance, but I still don't know how to implement it.

7. php multiple inheritance example

Introduction: Recently, a friend who is doing PHP development asked a question about Two people talked about the issue of multiple inheritance in PHP for a long time. In fact, they didn’t understand what multiple inheritance is. Today I have some free time, so I deliberately learned about the concept of multiple inheritance in detail, and also talked about how to implement multiple inheritance in PHP. some views.

8. Java software engineers learn PHP -14. Object-oriented

Introduction: Java programmers learn PHP - 14. Object-oriented Similarities: 1. It is also a class + method 2. Multiple inheritance is not allowed 3. There is also an interface, which can be used to implement multiple inheritance 4. There are also abstract classes 5. There are also static methods 6. Extensions can also be prohibited through the final keyword. Differences: 1. The class itself has no access modifier 2. The default access modifier for attributes and methods is public

9. [Transfer] PHP implements multiple inheritance through interfaces

Introduction: [Transfer] PHP implements multiple inheritance through interfaces ​ Although PHP classes are single-inherited, multiple inheritance can be achieved through other special methods, such as using interfaces. As long as the characteristics of the class are abstracted into interfaces, and the object has multiple identities by implementing the interface, it can be simulated Multiple inheritance happened. The following is an example of using interfaces to simulate multiple inheritance. The source code is as follows:

10. Programmers share their learning experience about PHP interfaces

Introduction: Programmers share their learning experience about PHP interfaces. LieHuo.Net network programming recently encountered difficulties in the process of learning the PHP5 interface. The book says it is a way to implement multiple inheritance, but I still don’t know how to implement it

[Related Q&A Recommendations]:

Is it possible to achieve multiple inheritance perfectly by using trait+interface to work together in PHP?

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