[ConfusedCartman]

Originally Posted by bananalive

The prefix is a seperate field in thread database table not part of the post. $formoutput is what gets stored as the post and does not contain prefix data.

Ah, I see I've confused you. I'm taking a different route, so I'll ask a different question:

Is there any way to use PHP to append "&prefixid=f4f" onto the end of the url that is submitted? This may allow me to use an if-else statement and, if it returns true, add the actual prefix to the thread.

By the way, if there is any way you can allow users to select their own prefix, that would be a much better solution than the above. Like I said, I tried the code you offered earlier, but it didn't work. Is there any way you can add this functionality?