原型模式

class Product
{
    private $title;

    public function setTitle($title)
    {
        $this->title = $title;
    }

    public function getTitle()
    {
        return $this->title;
    }

    public function __clone()
    {
        $this->title .= ‘->副本‘;
        return $this;
    }
}

$p = new Product();
$p->setTitle(‘s100‘);
$cloneP = clone $p;
echo $p->getTitle();
echo $cloneP->getTitle();

原型模式相对来讲比较简单,只是类或继承类,实现了clone方法.