MyBB .php Action commands. [Help me]

[Deities]

This is for my own testing purposes as well as future mybb development.

Being a .php action I want to know if the following situation is possible. Let me first give you an example.

This example is from HF message boards. It is just for show.


By clicking the above link, you will be sending a pm to myself (Please do not, it is just for testing purposes) with the subject of "I want to purchase Infamous Bot"

This is done by a {name}.php?{action}
In this example it was

Code:

private.php?action=send&uid=234024&subject=

I am looking for a way to refine your search terms. This being search.php I need the following action commands.

Search for a certain text in Post messages in a certain forum. Example being (This example doesn't work):

Code:

search.php?action=textfind=random&fid=123&postcheck=messagebody

Here is a more clear way of stating what I need.
-Check a certain forum FID
-Check for a certain Text
-Check inside post body (Not subject)

Basically I if the above is not possible I can easily change the file to support it. I just dislike core edits in MyBB.
I have seen users use this in there Marketplace forums but can no longer find it. I was hoping a .php coder would tell me what it could be.

This is done with MyBB's search.php which I uploaded for you to use and search though.
http://www.mediafire.com/?n6fjy20c5760q57