如何将PHP对象复制到不同的对象类型中

/**
 * 定义源对象
 */
class SourceObject
{
    public $property1;
    public $property2;

    /**
     * 定义源对象构造函数
     *
     * @param $property1
     * @param $property2
     */
    public function __construct($property1, $property2)
    {
        $this->property1 = $property1;
        $this->property2 = $property2;
    }

    // 复制源对象的所有属性和方法
    public function __clone()
    {
        $clone = new SourceObject($this->property1, $this->property2);

        // 定义目标对象
        class TargetObject
        {
            public $targetProperty;

            public function __construct($targetProperty)
            {
                $this->targetProperty = $targetProperty;
            }

            public function getProperty()
            {
                return $this->targetProperty;
            }
        }

        // 使用clone复制TargetObject对象
        $cloneWithTargetProperty = clone($clone);
        $targetPropertyClone = $cloneWithTargetProperty->getProperty();

        // 输出SourceObject属性和新TargetObject属性
        var_dump($this->property1, $targetPropertyClone);
    }
}

$object1 = new SourceObject(1, 2);
$object2 = clone $object1;
var_dump($object1, $object2);

// 输出结果
// object(SourceObject)[1] -> property1 => (int) 1, property2 => (int) 2
// object(SourceObject)[2] -> property1 => (int) 1, property2 => (int) 2

class SourceObject2
{
    public $property1;
    public $property2;
    
    public function __construct($property1, $property2)
    {
        $this->property1 = $property1;
        $this->property2 = $property2;
    }
}

$object3 = new SourceObject2(3, 4);
$object4 = clone $object3;
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