Given that there is no specification available of this feature, and it is deprecated, it makes all kinds of sense for people not to implement it.
它没有提供关于这个特性的任何有用说明，并且反对实现这个规则，并解释了人们为何不应实现它。
Note that this feature is deprecated and should not be used when creating new message types – use nested message types instead.
注意：这个特性已经被弃用了，在创建新的消息类型的时候，不应该再使用它——你应该使用嵌套消息类型来代替它。
This function has been DEPRECATED as of PHP 5.3.0. Relying on this feature is highly discouraged.
这位童鞋所用的服务器空间的PHP版本极有可能是PHP5.3.0，或以上版本的了。
This function has been DEPRECATED as of PHP 5.3.0. Relying on this feature is highly discouraged.
这位童鞋所用的服务器空间的PHP版本极有可能是PHP5.3.0，或以上版本的了。
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