i dont know is any need of this hack in an vB, but the one thing you can profit of this hack is you can see any attempts of hack in the log
ok phpinfo() is blocked, but i dont think it is a good idea to share this info, only if you have always the latest Version of php installed
and its true thats the problems of another boardsystem is not the same problem of vB, but i have found that vb 3.0.4+3.0.5 hase release because some problems with the santy an other holes
only in an nice and wonderfull world everbody update her system and there boards just in time, this skript can block the one try of hack how hacked youre site in the time between release the new version and you have time to do the update
and if you have any blocked funktions on youre board, look at the log and found the part in the string how collided with the definations of the hack and replace it
and whether you was attact whitout success in the last time you only can see in the logs of youre server or after an testtime in the log of this CT