I've been searching for this and can't quite get to what I need.
Is anyone aware of an open source forum script written in PHP that utilizes OOP concepts?
So has to be
I will accept answers for anything else, including tutorials, videos, etc. since I get to still see the source and learn from it.
I have used PHPBB in the past and it appears to fit your needs.
phpBB is a free flat-forum bulletin board software solution that can be used to stay in touch with a group of people or can power your entire website. With an extensive database of user-created modifications and styles database containing hundreds of style and image packages to customise your board, you can create a very unique forum in minutes.
No other bulletin board software offers a greater complement of features, while maintaining efficiency and ease of use. Best of all, phpBB is completely free. We welcome you to test it for yourself today*. If you have any questions please visit our Community Forum where our staff and members of the community will be happy to assist you with anything from configuring the software to modifying the code for individual needs. Learn more about phpBB.
You can find it at:
Perhaps you can find a convenient open source forum software at: http://www.forummatrix.org/
You could try Viscacha (http://www.forummatrix.org/show/Viscacha).
You should look into Vanilla.
It's free, open-source and does not have the bloat as many of its competitors (vB, phpBB) and it also has some very well written code to go alongside a reasonably good documentation =)