(PHP 5 >= 5.1.0, PHP 7)
ReflectionFunctionAbstract::getDocComment — 获取注释内容
获取函数的注释文本
本函数还未编写文档，仅有参数列表。
此函数没有参数。
如果存在注释文本返回其内容，否则返回 FALSE
Beware when you try to use the getDocComment() methods with eAccelerator turned on. eAccelerator ?optimizes? your code in a way that it removes any comments from your source. So at runtime you're not able to get any comments and therefor getDocComments return false.
In order to retrieve a comment with this method, the comment must be imediately before the class, function or method, start with /** and end with */