pillars of oop

Evaluate the OOP that I wrote

Ask for help? PHP OOP Example class animal{ Public $name = "";Public $color = "";Public $age = "";function GetInfo () {return $this->name;}function SetInfo ($name) {return $this->name;} Compiler prompt Warning}$pig =new animal ();$pig->setinfo (' pig ');$name = $pig->getinfo ();//Compiler hint ErrorEcho $name;?> PHP Share to: ------Solution-------------------- $pig =new animal ();$pig->setinfo (' pig ');//This is the wrong line, yo

The Oop of PHP notes ├ the properties and methods of object access itself are accessed with "--", and no "$" is required to access the property; ├ class inside Use this keyword when you add "$" before this $this->name = "Firstep"; ├ class constructor __construct () destructor __destruct () ├ access modifier public protected (this class, subclass, parent class accessible) private ├ Package correlation function (get\set) __set ($PN, $PV) __get ($arg)

Friday la la la-lamp+php ' s OOP

JavaScript-based OOP Programming The simplest way to define an object var car = {color:"red",drive:function() {alert(this.color + " car moved");}}This method is not very useful because it creates a separate object, which has no connection with any common data structures. To create a second car instance, its structure must be redefined. Create a new object using the constructor function Car() {this.color = "red";this.drive = function(){alert(this.

(instantiation) of the machine is the object, we can operate the entity, 10 machines, 10 objects. Each machine is independent, can only show that they are the same class, to one of the machines do any action will not affect the other 9 machines, but I modify the class, that is, in this configuration list with one or fewer accessories, then the installed 9 machine has changed, this is the relationship between classes and objects (class instantiation result is the object).This article is from the

class or interface-to-polymorphic;3. Dynamically create a subclass object based on the user's needs, and returnPackage cn.zzsxt.demo7.factory;//creating a parent class Public Abstract classAXE { Public Abstract voidcut ();} Package cn.zzsxt.demo7.factory;//Create Stone Axe class Public classStoneaxe extends AXE {@Override Public voidCut () {System. out. println ("I am a stone axe, cut Japanese blunt! "); }}package cn.zzsxt.demo7.factory.copy;//creating the Axe class Public classSteelaxe extends

the above code, only "name" is used when serializing an object with serialize (), and the "age" property is serialized.11.__wakeup (): Automatic invocation of object deserialization, initialization assignment for deserialization of newly generated objectsClass person{public $name; public $age; function __wakeup () { $this, name = "Lisi"; }}Serializes the object and then deserializes it, assigning an initial value of "Lisi" to the object's Name property.12.__

. Name); } } functionClassB (name) {//1) Implement inheritance using the Newmethod method //This.newmethod = ClassA; //This.newmethod (name); //delete This.newmethod;//Release Object //2) Call the Claasa function and point his context (scope) to this (that is, an instance of the ClassB Class) //This also allows for inheritance (using call or Apply)Classa.call ( This, name); //classa.apply (This

Self.score = Score Vincent = Student (' Vincent ', +) Lisa = Stud ENT (' Lisa ', 80)Encapsulation of dataAnother important feature of object-oriented is the encapsulation of data. In the above instance of the Student class, each instance has its own name and score data. We can access this data through functions, such as print scores:def print_score (self): print ('%s:%s '% (Self.name,self.score))sinceStudentThe instance itself has this data, to access the data, there is no need to access from t

One , in OOP, there is a pattern called a singleton pattern, that What is a singleton mode? PHP Singleton mode is that an object is generated only once, but the object can be used by many other objects. In its core structure, it contains only a special class called a singleton class. The singleton mode can ensure that there is only one instance of a class in the system, and the instance is easy to be accessed by the outside world, thus it is conv

{static $sex = "male";function __construct ($name, $sex) {$this->name= $name;Self:: $sex = $sex;}}echo Person:: $sex;⑥ static properties are shared. That is, new many objects are also shared with one property;3, the const keyword;* Declare constants in the class, you cannot use the Define () function! You must use the Const keyword.* Similar to the Define () declaration, the Const keyword declaration cannot take $ and must all be capitalized.* Constants once declared, cannot be changed. Called w

encapsulation:①__set ($key, $value): called automatically when assigning a value to a class private property, passing two arguments to a method when invoked: the property name and the property value to be set;②__get ($key): Automatically called when the class private property is read, passing a parameter to the method when invoked: the name of the property to be read;③__isset ($key): called automatically when a private property is detected externally using the Isset () function.Use Isset () out

__call ($funcName, $funcParams) { " functions you call: {$funcName}, parameter list " ; print_r ($funcParams) } 9, __clone (): When cloning an object using the Clone keyword, it is called automatically. The function is to initialize the newly cloned object to be assigned the value function __clone () { $this" John Doe "; }10, __sleep (): Automatically called when the object is deserialized. Returns an array in which the values in

The following videos are from the MU-class network JavaScript in layman's:650) this.width=650; "Src=" http://images2015.cnblogs.com/blog/1018604/201612/ 1018604-20161202155945927-595906646.png "style=" border:0px; "/>Here Student.prototype uses the Create method instead of directly assigning person.prototype values, because if you use assignments, both point to the same object, and if we want to add a new method to the student class, we can't. So if yo-ah that create method to let Person.prototy

Object : An instance that has features and functionality. Class : Is an abstraction of an object, a concept in people's mind, a collection of objects with common characteristics or the same behavior, and the use of classes to create objects;Create class: [Modifier] class class name { Create object: Class Name Object name = new class name ();Properties: Similar to variable naming, [modifier] Data Type property name analogy: Scanner input = new Scanner (system.in);Method: [modifier] Returns a valu

and get the correct output.Three major features of OOP: encapsulation, inheritance, polymorphism; this is just about how inheritance is done in JavaScript (limited to ES5).Inheritance is just a means of code reuse, then how to implement inheritance in JS?Prototype-based inheritanceFirst, the function is also an object, because all functions are instances of function objects, function names, which define functions as a shortcut, theoretically and var

(instantiation) of the machine is the object, we can operate the entity, 10 machines, 10 objects. Each machine is independent, can only show that they are the same class, to one of the machines do any action will not affect the other 9 machines, but I modify the class, that is, in this configuration list with one or fewer accessories, then the installed 9 machine has changed, this is the relationship between classes and objects (class instantiation result is the object)."Getting Started with PH

Do not say his concept, if you want to build a computer classroom, first to have a room, the room to have n computers, there are n tables, n chairs, white boards, projectors and so on, these are what, just now we said, this is the object, can see the entity, Can say this computer classroom unit is this one entity object, they together compose this computer classroom, then we are the procedure, this and object-oriented have what relation? Develop a system program and build a computer classroom. S

class on the fly A . The parent class is object (note that the multiple-inheritance parent class is placed inside tuple .) Suppose there is only one parent class, the tuple has only one element, and the comma is not limited. And there is a af method named.metaclassMeta class * Class is equivalent to an instance of a meta class. Metaclass is the most difficult and difficult-to-use magic code for Python-oriented objects. Generally not used * This part of the content is skipped first