*** I graciously accept code contributions from other GitHub users. ***
Author details:
Name: MESSIAH
Email: messiah@os.pl
WWW: http://errors.win/
Modification description: Make your phpBB forum's URLs pretty!
Additional information: https://www.phpbb.com/community/viewtopic.php?f=70&t=2165971#p13203388
With contributions by k0nsl (i.am@k0nsl.org).