How to get suggestions in NetBeans for included files

i have a problem to get sugg开发者_运维知识库estions for classes which are included in included files.

E.g. content of file 'Header.php' is:

//File 'Header.php':
include('User.php'); //Class file

When I now include the Header.php in my file 'Example.php', i do not get any suggestions:

//File 'Example.php':
include('Header.php');
User::

After typing User:: I exspect Methods and Vars of class User as suggestions, but there arent any. If I would include 'User.php' directly in my 'Example.php' it works, but that doesn't help me. How to solve this problem?

This works fine for me, but all the files have to be included in a Project file. You can't just open random files and include them. Also, if it's lagging, try pressing Crtl+Space.

You can use static keyword to declare your methods and vars in class. Then Netbeans (definitely in NB 6.9.1) will show suggestions like ClassName::... But this one solution is not for all cases...