php design patterns book

iterator ModeTraversing an internal element of an aggregate object without needing to know the internals, compared to the traditional programming model, iterator ModeYou can hide all actions that traverse an element An iterator pattern is a very high-frequency design pattern that allows the traversal of data to be detached from a clustered object by introducing iterators, which are only responsible for storing data, and traversing the data is done

Symfony2 Many design pattern ideas, the following information will be a bit helpful: http://www.open-open.com/lib/view/open1414996676559.htmlRead Catalogue Creational Structural Behavioral More Here are some sample code that implements the famous design pattern in PHP. Each pattern has examples (most of which come from the Zend Framework

Method Static Public functionGetinstanceentry () {//public static method, the entry of an external instance object if(!self::$objInstanceof self) {//instanceof Determining whether an object is instantiatedSelf::$obj=NewSelf ();//or the new Danli () } returnSelf::$obj; } Public functionGetName ($nn){ return $nn; }}$t= Danli::getinstanceentry ();Echo $t-GetName (' ABC '));?>Factory mode: Is a class, in this class is some way to create objects, so that w

Note that iterators are a better abstraction than object sets, because we can let infiniteiterators,norewinditerators and so on, without being consistent with normal array arrays, so iterator lacks functions such as the count () function. A complete list of SPL iterators can be found in the official PHP manual. Thanks to strong support for PHP, much of the work using the iterator pattern is included in the

(); return static::$_instance; } Clone functions and constructors must be declared private, //Prevent external programs from creating a new class, and losing the meaning of singleton patterns. Private Function __clone () { } Private Function __construct () { } Public Function Open () { echo "init times:".) Static:: $token. ' 　　Comparison of a singleton with the static class: 1, Singleton can be very

This article introduces three kinds of commonly used PHP design patterns: Singleton mode, Factory mode, observer mode, has a good reference value, followed by small series to see it First, the singleton mode The so-called Singleton pattern is that only one instance of this class exists in the application. Typically, singleton mode is used in instances where only

PHP design patterns-six principles Code that follows the following six principles is generally considered to be easily scalable and reusable: These six principles should be followed by any object-oriented language. If you want to make your code easy to expand and take high, try to satisfy these six principles. It is not necessarily based on a certain

? Phpclassa {staticpublic $ obj; publicfunction _ construct () {} staticpublicfunctiongetInstance () {if (empty (self ::$ obj) {echo executes instantiation of BR; self :: $ objnewa () ;}returnself: $ obj;} publicfunctiontest () {returntestBR ;}}$ NewIn ? Phpclass a {static public $ obj; public function _ construct () {} static public function getInstance () {if (empty (self: $ obj )) {echo executes the instantiation of BR; self: $ obj = new a ();} return self: $ obj;} public function test () {re

Interface in PHP can only play a role in the definition of constraint class, although not as intuitive as C#/java, but based on the requirements of the package of OOP, the use of interfaces can improve the scalability of the program, such as the implementation of proxy design patterns. Copy CodeThe code is as follows: Human interface Interface Ihuman { function

PHP 3 Basic Design Patterns combined use 1.1 工厂模式 , the factory method or class generates the object instead of the code directly in the new class Factory{ static function getDatabase(){ return new Mysql($host, $user, $pass); } } #使用 Factory::getDatabase(); 1.2 单例模式 , making an object of a class run only to create a

PHP design mode single-instance modeA singleton pattern is a creation pattern that restricts an application to create only a single instance of a particular class type. For example, a Web site would require a database connection object, but there should be only one, so we implemented this limitation by using a singleton pattern.We can use a static property to ensure that there is only one single instance fo

Single-instance learning for php design patterns Class { Private function _ construct (){} } $ A = new (); ?> Program running result: Fatal error: Call to private A :__ construct () from invalid context in E: \ PHPProjects \ test. php on line 6We have disabled t

Design Patterns in PHP--façade mode ' ;} }//(2) PC Machine class Pcmachine {public Function turnOn () {} public Function turnoff () {echo ' Turn off pcmathion' ;}} (3) Power off class Power {public Function turnOn () {} public Function turnoff () {echo ' Turn off power' ; }}//shutdown of the façade role class Pcfacade implements Facade{private $PcLight; priva

Design Patterns in PHP--viewer mode Observers[] = $observer;} Delete Viewer (person looking at flower) Public Function detach (Observer $observer) {if (In_array ($observer, $this->observers)) {$index = Array_ Search ($observer, $this->observers); unset ($this->observers[$index]); return TRUE;} return false; }//notifies the Observer that public fu

The Observer pattern for PHP design Patterns /** * Interface Observable * Define a Observable Interface * @author jichao.wang */interface observable{function Attac H (Observer $observer); function Detach (Observer $observer); function notify ();} /** * Class Login * @author Jichao.wang */class Login implements observable{private $observers; P

Tag:phpinterface Object design mode Design Patterns in PHP--façade mode

', ' }}/*** Billing class processing rebate, here is Reback RMB**/Class Checkouts implements observerable{Public Function Update () {Echo ' Cashback 10rmb ', ' }}/*** User level class processing user level.**/Class ranks implements observerable{Public Function Update () {Echo ' Raise grade level ', ' }}/*** Promotion Category**/Class Promotion {Private $observers = Array ();Public Function Register (observerable $o) {//Register ObserverArray_push ($this->observers, $o);}Public Function Notify (

/*** 观察者模式* @author: Mac* @date: 2012/02/22*/classPaper{ /* 主题 */private$_observers= array();publicfunction register($sub){ /* 注册观察者 */$this->_observers[] = $sub;}publicfunction trigger(){ /* 外部统一访问 */if(!empty($this->_observers)){foreach($this->_observers as$observer){$observer->update();}}}}/*** 观察者要实现的接口*/interfaceObserverable{publicfunctionupdate();}classSubscriber implementsObserverable{publicfunction update(){echo"Callback\n";}} Here is the test code /

classDbfactory {Private $errmsg= ' No class file found '; Static functionFactory$className){ $className=Strtoupper(substr($className, 0, 1)).substr($className, 1); if(include_once($className.‘. Php)){ return New $className; } Else{ Throw New Exception($this-errmsg); }}}dbfactory:: Factory (' Cars ');D bfactory:: Factory (' Animal ');Cars. phpPHP class cars{ function __construct () { echo "car Class"; }

Design Patterns in PHP--strategy mode