Trying to do a link trade mod
 

I currently have a link trade program running on my site and I would like to integrate it into my Vbulletin as a mod. This way I can share it with the community as well as use the security features vBulletin already has.

On the official (.com) board I found a way to somewhat do this at http://www.vbulletin.com/forum/showthread.php?t=197563

The problem was that I could not truly run PHP code. It echo's the PHP instead of running it. How do I get the PHP to actually run?

Is something like this frowned upon? Don't mean to step on anyone's toes. It's just that me and my friend have created several items I use on my site that we think the vbulletin community would love to use as well.

The goal is to have this be a publicly available mod. We just can't seem to get php code to run. It only prints it for some reason.