[PHP知识库]第九章 PHP设计模式之原型模式

<?php

class Company
{
    public $company;
    
    public function setName($name)
    {
        $this->company = $name;
    }

    public function getName()
    {
        return $this->company;
    }
}

Class Resume {
    public $name;
    public $age;
    public $company;
    public $timeArea;
    public $sex;

    public function __construct($name)
    {
        $this->name = $name;
        $this->company = new Company();
    }

    public function setPersonalInfo($age, $name)
    {
        $this->age = $age;
        $this->name = $name;
    }

    public function setWorkExperience($timeArea, $company)
    {
        $this->timeArea = $timeArea;
        $this->company->setName($company);
    }

    public function display()
    {
        echo $this->name." ".$this->sex." ".$this->age."\n";
        echo $this->timeArea." ".$this->company->getName()."\n";
    }

    public function __clone()
    {
        // TODO: Implement __clone() method.
        $this->company = clone $this->company;
    }
}

// 客户端代码
$resume = new Resume("大鸟");
$resume->setPersonalInfo("男", 29);
$resume->setWorkExperience("1998-2000","xxx 公司");
$resume->display();

$resume2 = clone $resume;
$resume2->setPersonalInfo("男", 40);
$resume2->setWorkExperience("1998-2010","xx 公司");
$resume2->display();

总结

原型模式，用原型实例指定创建对象的种类，并且通过拷贝这些原型创建新的对象。

原型模式其实就是从一个对象再创建另外一个可定制的对象，而且不需要知道任何创建的细节。

一般在初始化的信息不发生变化的情况下，克隆是最好的办法。既隐藏了对象创建的细节，又对性能是大大的提高。