[PHP] Recursive Threading

I'm using recursive threading for a simple thread board script, but the problem is the # of queries needed to execute. That is, once given the main thread post, it'll have to find all the posts where the parentID matches the current ID, then requery again for each of the post. So I'm trying to

[PHP] Recursive Threading with PHP and MySQL.

I want to know how can i do that Recursive loop to get categories as example can any body help me by give my tutorial or any thing to understand this techniqe