php objects patterns and practice

This article gives you a brief introduction of the three most commonly used design patterns in PHP: Single-instance design patterns, factory design patterns, and observer design patterns. Are some of the personal experience of the summary, I hope that small partners can like

object is not shared by some simple elements that are combined by using a composite pattern to represent objects that are represented by the Composite role. However, a composite element object can be decomposed into multiple combinations that are itself a purely exclusive object. Nine, compound-enjoy-mode PHP example Ten, PHP in the status of th

PHP design model-Abstract factory. PHP design patterns-Abstract factory we have introduced the simple factory and Factory method design patterns. today we are studying the last factory abstraction factory. Case study: catch up with MM and have a meal with the PHP design mode

implementation change, Concretevisitor also increases the corresponding behavior, Gof suggests that it is better to define actions individually in these object classes without using the visitor design pattern. Iv. Visitor mode and other modes 1. If the structure object being browsed is linear, it is possible to use an iterative mode instead of a visitor pattern2, visitor mode to browse some of the structural objects of the composite modeAbove two p

Common php design patterns factory models Many design patterns encourage loose coupling in the design patterns book. To understand this concept, we 'd better talk about the hard work of many developers engaged in large-scale systems. When changing a code snippet, a problem occurs. what is the other part of the system ?

PHP design patterns-six principles. PHP design patterns-six principles code that follows the six principles is generally considered to be scalable and reusable: These six principles should be followed by any object-oriented language, six principles for designing PHP models

and a public static method that can access the instance. In PHP, to prevent the singleton class object from being cloned to break the preceding implementation form of Singleton classes, an empty private _ clone () method is also provided for the basics. The Singleton mode ensures that a class has only one instance, and the instance is self-instantiated and provided to the entire system. The Singleton mode is a common design mode. in computer systems,

assembly process of the product occurs within the builder. The difference is whether there is an assembly process, where the assembly process takes place. These two design patterns can be linked together, and the client invokes another factory role in the abstract factory pattern indirectly by invoking a build role. Factory models return parts of different product families, and the builder model assembles them. strategy Mode (Strategy mode): The bui

proper will bring great convenience to the program, improper use, will give up-and a difficult to maintain the idea. What is the Observer pattern? An object makes itself observable by providing a way to allow another object, the observer, to register itself. When an observable object changes, it sends the message to the registered observer. The actions that these observers perform with this information are independent of the observable objects. The

distributed in the composite and leaf categories. Six, the safe type synthesis pattern declare in the composite class all the methods used to manage the subclass object. Such a practice is safe. Because leaf-type objects simply do not have a way to manage subclasses, the program will fail at compile time if the client uses these methods for the leaf class object. Compile pass, there will be no run-time err

This article mainly shares an example of a PHP single example pattern, design patterns These flower point of mind Basic is able to understand, of course, want to very good application to the project is also need a certain practice, can not just know, or say is very strong understand, one to the actual operation is not, nonsense will not say more The singleton p

PHP 12 Design Patterns The design basis of PSR-0 specification 1. Use all namespaces 2. All PHP files must be loaded automatically, cannot have Include/require Spl_autoload_register 3. Single entry mode 1. Three basic design Patterns Factory mode To replace a new one with a factory method Class factory{ static f

Singleton mode (ensures that a class is instantiated only once and can be instantiated by itself) Factory mode (replaces the new operation) Strategy mode (use different methods to achieve the same purpose) Observer mode (When an object changes, other objects also trigger the corresponding action) Adapter mode (encapsulates different methods into a unified approach) Registration mode (putting an instance into an array for invocation

Please read the previous article first Refactoring Even the most thoughtful and skilled programmers cannot foresee any nuance in a software project. The problem is always unexpected, the demand may be changing, and the result is that the code is optimized, shared, and replaced. Refactoring is a common approach: check all your code to find the similarities and the similarities in which you can unify and simplify, making your code easier to maintain and extend. Refactoring also involves exploring

PHP page is interpreted after execution, all the relevant resources will be recycled. Factory modeThe factory class is a class that is designed to create other objects, and factory classes are very important in the practice of polymorphism programming. It allows you to dynamically replace classes, modify configurations, and make your application more flexib

Description: This tutorial all cut off from the experimental building tutorial "16 PHP Design Patterns in detail": The main introduction of 16 common design patterns of basic concepts and technical points, through the UML class diagram to help understand the design patterns in the relationship between the various class