运行时发错，望高人指点，谢谢
final class MyPc{
static $name="我的电脑";
static function power(){
echo self::$name."电脑开中...";
}
}
MyPc::$name="你的电脑哦";
echo MyPc::power()
final class My1{
const NAME="我的电脑";
static function power1(){
echo My1::NAME."电脑开中...";
}
}
My1::power1();
