PHP设计模式-工厂模式

代码摘抄自：http://blog.csdn.net/mysteryhaohao/article/details/51181089

使用场景：

如果很多地方调用了类Test，那么假设某天需要把Test类的名称修改，则意味着所有调用此类的地方都要修改

关键：

只要是可以根据不同的参数生成不同的类实例，那么就符合工厂模式的设计思想

代码实现：

<?php
/**
* 基本工厂模式
* */
class User {
private $username;
public function __construct($username) {
$this->username = $username;
}

public function getUser() {
return $this->username;
}
}

class userFactory {
static public function createUser() {
return new User('Jack');
}
}

$user = userFactory::createUser();echo $user->getUser();

/**
*简单工厂模式
* */
interface userProperties {
function getUsername();
function getGender();
function getJob();
}
class User implements userProperties{
private $username;
private $gender;
private $job;
public function __construct($username, $gender, $job) {
$this->username = $username;
$this->gender = $gender;
$this->job = $job;
}

public function getUsername() {
return $this->username;
}

public function getGender() {
return $this->gender;
}

public function getJob() {
return $this->job;
}
}

class userFactory {
static public function createUser($properties = []) {
return new User($properties['username'], $properties['gender'], $properties['job']);
}
}

$employers = [
['username' => 'Jack', 'gender' => 'male', 'job' => 'coder'],
['username' => 'Marry', 'gender' => 'female', 'job' => 'designer'],
];
$user = userFactory::createUser($employers[0]);
echo $user->getUsername();

/**
* 工厂方法模式
**/
interface userProperties {
function getUsername();
function getGender();
function getJob();
}

interface createUser {
function create($properties);
}

class User implements userProperties{
private $username;
private $gender;
private $job;
public function __construct($username, $gender, $job) {
$this->username = $username;
$this->gender = $gender;
$this->job = $job;
}

public function getUsername() {
return $this->username;
}

public function getGender() {
return $this->gender;
}

public function getJob() {
return $this->job;
}
}

class userFactory {
private $user;
public function __construct($properties = []) {
$this->user =  new User($properties['username'], $properties['gender'], $properties['job']);
}

public function getUser() {
return $this->user;
}
}

class FactoryMan implements createUser {
function create($properties) {
return new userFactory($properties);
}
}

class FactoryWoman implements createUser {
function create($properties) {
return new userFactory($properties);
}
}

class clientUser {
static public function getClient($properties) {
$fac = new FactoryMan;
$man = $fac->create($properties);
echo $man->getUser()->getUsername();
}
}

$employers = [
['username' => 'Jack', 'gender' => 'male', 'job' => 'coder'],
['username' => 'Marry', 'gender' => 'female', 'job' => 'designer'],
];
$user = clientUser::getClient($employers[0]);

/**
* 抽象工厂模式
* */

interface userProperties {
function getUsername();
function getGender();
function getJob();
}

interface createUser { //将对象的创建抽象成一个接口
function createOpen($properties);//内向创建
function createIntro($properties);//外向创建
}

class User implements userProperties{
private $username;
private $gender;
private $job;
public function __construct($username, $gender, $job) {
$this->username = $username;
$this->gender = $gender;
$this->job = $job;
}

public function getUsername() {
return $this->username;
}

public function getGender() {
return $this->gender;
}

public function getJob() {
return $this->job;
}
}

class userFactory {
private $user;
public function __construct($properties = []) {
$this->user =  new User($properties['username'], $properties['gender'], $properties['job']);
}

public function getUser() {
return $this->user;
}
}

class FactoryMan implements createUser {
function createOpen($properties) {
return new userFactory($properties);
}

function createIntro($properties) {
return new userFactory($properties);
}
}

class FactoryWoman implements createUser {
function createOpen($properties) {
return new userFactory($properties);
}

function createIntro($properties) {
return new userFactory($properties);
}
}

class clientUser {
static public function getClient($properties) {
$fac = new FactoryMan;
$man = $fac->createOpen($properties);
echo $man->getUser()->getUsername();
}
}

$employers = [
['username' => 'Jack', 'gender' => 'male', 'job' => 'coder'],
['username' => 'Marry', 'gender' => 'female', 'job' => 'designer'],
];
$user = clientUser::getClient($employers[0]);