中介者模式

在 2015年7月13日2015年12月30日上张贴由 BestLove

<?php
interface Mediator {
    public function setUser(User $user);
    public function send($message, User $sendUser, User $receiveUser=null);
}

abstract class User {
    protected $mediator = null;
    public function setMediator(Mediator $mediator) {
        $mediator->setUser($this);
        $this->mediator = $mediator;
    }
    abstract public function send($message, User $receiveUser=null);
}

class QQMediator implements Mediator {
    private $users = array();
    public function setUser(User $user) {
        $this->users[]=$user;
    }
    public function send($message, User $sendUser, User $receiveUser=null) {
        foreach ($this->users as $user) {
            if ($user === $sendUser) {
                continue;
            }
            if ($receiveUser !== null && $receiveUser !== $user) {
                continue;
            }
            echo $user->name . '接收到了来自' . $sendUser->name . '的信息：' . $message . '<br>';
        }

    }
}

class User1 extends User {
    public $name = '用户1';
    public function send($message, User $receiveUser=null) {
        $this->mediator->send($message, $this, $receiveUser);
    }
}

class User2 extends User {
    public $name = '用户2';
    public function send($message, User $receiveUser=null) {
        $this->mediator->send($message, $this, $receiveUser);
    }
}

class User3 extends User {
    public $name = '用户3';
    public function send($message, User $receiveUser=null) {
        $this->mediator->send($message, $this, $receiveUser);
    }
}

$mediator = new QQMediator();
$user1 = new User1();
$user1->setMediator($mediator);
$user2 = new User2();
$user2->setMediator($mediator);
$user3 = new User3();
$user3->setMediator($mediator);

echo '群发：<br>';
$user1->send('你们好啊');
echo '<br>单发：<br>';
$user2->send('你好用户3', $user3);

<?php

interface Mediator {

public function setUser(User $user);

public function send($message, User $sendUser, User $receiveUser=null);

}

abstract class User {

protected $mediator = null;

public function setMediator(Mediator $mediator) {

$mediator->setUser($this);

$this->mediator = $mediator;

}

abstract public function send($message, User $receiveUser=null);

}

class QQMediator implements Mediator {

private $users = array();

public function setUser(User $user) {

$this->users[]=$user;

}

public function send($message, User $sendUser, User $receiveUser=null) {

foreach ($this->users as $user) {

if ($user === $sendUser) {

continue;

}

if ($receiveUser !== null && $receiveUser !== $user) {

continue;

}

echo $user->name . '接收到了来自' . $sendUser->name . '的信息：' . $message . ' ';

}

class User1 extends User {

public $name = '用户1';

public function send($message, User $receiveUser=null) {

$this->mediator->send($message, $this, $receiveUser);

}

class User2 extends User {

public $name = '用户2';

public function send($message, User $receiveUser=null) {

$this->mediator->send($message, $this, $receiveUser);

}

class User3 extends User {

public $name = '用户3';

public function send($message, User $receiveUser=null) {

$this->mediator->send($message, $this, $receiveUser);

}

$mediator = new QQMediator();

$user1 = new User1();

$user1->setMediator($mediator);

$user2 = new User2();

$user2->setMediator($mediator);

$user3 = new User3();

$user3->setMediator($mediator);

echo '群发： ';

$user1->send('你们好啊');

echo ' 单发： ';

$user2->send('你好用户3', $user3);

原型模式

在 2015年7月10日2015年7月10日上张贴由 BestLove

<?php 
//原型模式：当需要创建的类消耗比较大时可以使用，感觉直接用显示clone也是可以的
class Prototype {
    private $name = '';
    public function setName($name) {
        $this->name = $name;
    }
    public function getName() {
        return $this->name;
    }
    public function copy() {
        return clone $this;   //浅拷贝
    }
    public function __clone() {
        //被拷贝时，可以定制一些改变
        $this->name = $this->name . '(备份)';
    }
}

$test1 = new Prototype();
$test1->setName('张三');
$test2 = $test1->copy();
echo $test1->getName();
echo '<br>';
echo $test2->getName();

//test1输出张三 test2输出张三(备份) 感觉是不是跟$test2 = clone $test1;一样的。。。

//当然被clone的对象里面还有引用的话，浅拷贝是无法完全clone的，需要再次使用clone，如果被clone的对象里面还有引用的话需要层层往上clone。。此时，就不太适合使用原型模式了，可以使用直接序列化和反序列化

//浅复制
class Obj1 {
    private $name = '我是你的对象';
    public function getName() {
        return $this->name;
    }
}

class Obj2 {
    private $obj = null;
    public function __construct($obj) {
        $this->obj = $obj;
    }
    public function getObj() {
        return $this->obj;
    }
}

$obj1 = new Obj1();
$obj2 = new Obj2($obj1);
$obj3 = clone $obj2;

//输出结果为true，说明$obj对象是一个引用，并没有完全clone
var_dump(spl_object_hash($obj2->getObj()) === spl_object_hash($obj3->getObj()));

//深复制
class Obj4 {
    private $obj = null;
    public function __construct($obj) {
        $this->obj = $obj;
    }
    public function getObj() {
        return $this->obj;
    }
    public function __clone() {
        $this->obj = clone $this->obj;  //当对象被clone的时候，再次clone内部对象
    }
}

$obj4 = new Obj4($obj1);
$obj5 = clone $obj4;

//输出结果为false，因为$obj对象被再次clone了
var_dump(spl_object_hash($obj4->getObj()) === spl_object_hash($obj5->getObj()));

//序列化
$obj6 = unserialize(serialize($obj2));
//输出结果为false
var_dump(spl_object_hash($obj2->getObj()) === spl_object_hash($obj6->getObj()));

<?php

//原型模式：当需要创建的类消耗比较大时可以使用，感觉直接用显示clone也是可以的

class Prototype {

private $name = '';

public function setName($name) {

$this->name = $name;

}

public function getName() {

return $this->name;

}

public function copy() {

return clone $this; //浅拷贝

}

public function __clone() {

//被拷贝时，可以定制一些改变

$this->name = $this->name . '(备份)';

}

$test1 = new Prototype();

$test1->setName('张三');

$test2 = $test1->copy();

echo $test1->getName();

echo ' ';

echo $test2->getName();

//test1输出张三 test2输出张三(备份) 感觉是不是跟$test2 = clone $test1;一样的。。。

//当然被clone的对象里面还有引用的话，浅拷贝是无法完全clone的，需要再次使用clone，如果被clone的对象里面还有引用的话需要层层往上clone。。此时，就不太适合使用原型模式了，可以使用直接序列化和反序列化

//浅复制

class Obj1 {

private $name = '我是你的对象';

public function getName() {

return $this->name;

}

class Obj2 {

private $obj = null;

public function __construct($obj) {

$this->obj = $obj;

}

public function getObj() {

return $this->obj;

}

$obj1 = new Obj1();

$obj2 = new Obj2($obj1);

$obj3 = clone $obj2;

//输出结果为true，说明$obj对象是一个引用，并没有完全clone

var_dump(spl_object_hash($obj2->getObj()) === spl_object_hash($obj3->getObj()));

//深复制

class Obj4 {

private $obj = null;

public function __construct($obj) {

$this->obj = $obj;

}

public function getObj() {

return $this->obj;

}

public function __clone() {

$this->obj = clone $this->obj; //当对象被clone的时候，再次clone内部对象

}

$obj4 = new Obj4($obj1);

$obj5 = clone $obj4;

//输出结果为false，因为$obj对象被再次clone了

var_dump(spl_object_hash($obj4->getObj()) === spl_object_hash($obj5->getObj()));

//序列化

$obj6 = unserialize(serialize($obj2));

//输出结果为false

var_dump(spl_object_hash($obj2->getObj()) === spl_object_hash($obj6->getObj()));

装饰模式

在 2015年7月9日2015年7月9日上张贴由 BestLove

<?php 
    class MilkTea {
        private $name = '奶茶';
        private $price = 3;
        public function setName($prefix) {
            $this->name = $prefix . $this->name;
        }
        public function setPrice($price) {
            $this->price += $price;
        }
        public function info() {
            echo $this->name . '售价' . $this->price . '元';
            echo '<br>';
        }
    }

    abstract class Decoration {
        abstract public function addDecoration(MilkTea $milkTea);
    }

    class PearlDecoration extends Decoration {
        public function addDecoration(MilkTea $milkTea) {
            $milkTea->setName('珍珠');
            $milkTea->setPrice(2);
        }
    }

    class RedBeanDecoration extends Decoration {
        public function addDecoration(MilkTea $milkTea) {
            $milkTea->setName('红豆');
            $milkTea->setPrice(2);
        }
    }

    $milkTea = new MilkTea();
    $milkTea->info();
    $pearlDecoration = new PearlDecoration();
    $pearlDecoration->addDecoration($milkTea);
    $milkTea->info();
    $redBeanDecoration = new RedBeanDecoration();
    $redBeanDecoration->addDecoration($milkTea);
    $milkTea->info();
    //第一次输出：奶茶售价3元，加了珍珠（装饰）后输出：珍珠奶茶售价5元，加了红豆（装饰）后输出：红豆珍珠奶茶售价7元

<?php

class MilkTea {

private $name = '奶茶';

private $price = 3;

public function setName($prefix) {

$this->name = $prefix . $this->name;

}

public function setPrice($price) {

$this->price += $price;

}

public function info() {

echo $this->name . '售价' . $this->price . '元';

echo ' ';

}

abstract class Decoration {

abstract public function addDecoration(MilkTea $milkTea);

}

class PearlDecoration extends Decoration {

public function addDecoration(MilkTea $milkTea) {

$milkTea->setName('珍珠');

$milkTea->setPrice(2);

}

class RedBeanDecoration extends Decoration {

public function addDecoration(MilkTea $milkTea) {

$milkTea->setName('红豆');

$milkTea->setPrice(2);

}

$milkTea = new MilkTea();

$milkTea->info();

$pearlDecoration = new PearlDecoration();

$pearlDecoration->addDecoration($milkTea);

$milkTea->info();

$redBeanDecoration = new RedBeanDecoration();

$redBeanDecoration->addDecoration($milkTea);

$milkTea->info();

//第一次输出：奶茶售价3元，加了珍珠（装饰）后输出：珍珠奶茶售价5元，加了红豆（装饰）后输出：红豆珍珠奶茶售价7元

唐晓锋–BLOG

This is just a personal note.

月份：2015年7月

中介者模式

原型模式

装饰模式