魔术方法set 为何直接ECHO 无效呢?
上面写着::
当对不可访问属性调用 isset() 或 empty() 时，__isset() 会被调用。
在下面又写::
在除 isset() 外的其它语言结构中无法使用重载的属性，这意味着当对一个重载的属性使用 empty() 时，重载魔术方法将不会被调用。 为避开此限制，必须将重载属性赋值到本地变量再使用 empty()。
自己测试empty有效.
求问手册上的这段话是什么意思>????????????????
回复讨论(解决方案)
版主,你的手册在哪下的? 我的手册上没有译注这段话, 求下载地址,谢谢;
比较早了，2012年的
我传到这里了 http://pan.baidu.com/s/1gdirx9x
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