PHP设计模式：原型模式

Posted 2020-10-16

sdfasd

<?php
/**
 * 原型模式(深拷贝+浅拷贝)
 */
declare(strict_types=1);//开启强类型模式

class CopyObj
{
    public $array;
}

//抽象原型类
abstract class Prototype
{
    protected $attach;

    public function __construct(CopyObj $obj)
    {
        $this->attach = $obj;
    }

    public function set($name, $value)
    {
        $this->$name = $value;
    }

    public function get($name)
    {
        return $this->$name;
    }

    public function getAttach()
    {
        return $this->attach;
    }

    abstract public function clone();
}

class DeepCopy extends Prototype
{
    public function clone()
    {
        $obj = clone $this;
        return $obj;
    }
}

class ShallowCopy extends Prototype
{
    public function clone()
    {
        $serializeObj = serialize($this);
        $obj = unserialize($serializeObj);
        return $obj;
    }
}

123

123

//----------深拷贝--------------
$chairman = new CopyObj();
$chairman->array = ['×××', '×××', '江泽明'];


$deepCopyObj1 = new DeepCopy($chairman);
$deepCopyObj2 = $deepCopyObj1->clone();

echo "<pre>";

var_dump($deepCopyObj1->getAttach());
var_dump($deepCopyObj2->getAttach());

//修改对象
$chairman->array = ['×××', '×××'];
var_dump($deepCopyObj1->getAttach());
var_dump($deepCopyObj2->getAttach());

asdsad

//-------------浅拷贝-------------

$start = new CopyObj();
$start->array = ['刘德华', '张学友', '郭富城', '黎明'];
$deepCopyObj3 = new ShallowCopy($start);
$deepCopyObj4 = $deepCopyObj3->clone();
var_dump($deepCopyObj3->getAttach());
var_dump($deepCopyObj4->getAttach());

//修改对象
$start->array = ['周杰伦'];
var_dump($deepCopyObj3->getAttach());
var_dump($deepCopyObj4->getAttach());