对象外部可见的PHP私有属性（在同一类中）

在这个例子中，我有一个抽象类和两个常规类。抽象类不应单独使用，因此其构造函数受到保护。有些函数是在抽象类中定义的

其中一个函数是“克隆”函数，它应该返回当前对象的新实例。 此函数用于创建当前对象的副本

我的问题是：
当试图在clone（）中设置$copy->baz（[2]）时，它会起作用，因为我属于定义此私有属性的类。但是，这对我来说没有意义（至少在本例中是这样），因为$copy是另一个对象（属于同一个类）——在设置另一个对象（不是类）的私有属性时，有可能强制PHP使用magic setter（“设置私有属性”）吗

---

您需要将您的方法命名为

\uu clone

，而不是

clone

[编辑以替换代码]

试试这个：

<?

header( 'content-type: text/plain' );
abstract class ac
{
    private $name = 'default-value';

    public function __set($name, $value)
    {
        throw new Exception( 'Undefined or private property.' . $name );
    }

    function __clone()
    {
        // this does work - $this->name is private but is accessible in this class
        $this->name = 'Isaac Newton';
    }
}

class c1 extends ac
{

    function __clone()
    {
        // this does not work - $this->name is private to ac and can't be modified here
        $this->name = 'Isaac Newton';
    }

    function echoName()
    {
        echo $this->name;
    }
}

function dostuff()
{
    $o = new c1();
    //$o->otherVariable = 'test'; // won't work - it's undefined
    $a = clone $o;
}

dostuff();

---

您需要命名您的方法
\u clone
，而不是
clone

[编辑以替换代码]

试试这个：

<?

header( 'content-type: text/plain' );
abstract class ac
{
    private $name = 'default-value';

    public function __set($name, $value)
    {
        throw new Exception( 'Undefined or private property.' . $name );
    }

    function __clone()
    {
        // this does work - $this->name is private but is accessible in this class
        $this->name = 'Isaac Newton';
    }
}

class c1 extends ac
{

    function __clone()
    {
        // this does not work - $this->name is private to ac and can't be modified here
        $this->name = 'Isaac Newton';
    }

    function echoName()
    {
        echo $this->name;
    }
}

function dostuff()
{
    $o = new c1();
    //$o->otherVariable = 'test'; // won't work - it's undefined
    $a = clone $o;
}

dostuff();

请查看我对答案的最新编辑-我认为这可能会有所帮助。请查看我对答案的最新编辑-我想这可能会有所帮助。谢谢
<?

header( 'content-type: text/plain' );
abstract class ac
{
    private $name = 'default-value';

    public function __set($name, $value)
    {
        throw new Exception( 'Undefined or private property.' . $name );
    }

    function __clone()
    {
        // this does work - $this->name is private but is accessible in this class
        $this->name = 'Isaac Newton';
    }
}

class c1 extends ac
{

    function __clone()
    {
        // this does not work - $this->name is private to ac and can't be modified here
        $this->name = 'Isaac Newton';
    }

    function echoName()
    {
        echo $this->name;
    }
}

function dostuff()
{
    $o = new c1();
    //$o->otherVariable = 'test'; // won't work - it's undefined
    $a = clone $o;
}

dostuff();