This script is useful to regain access to a DokuWiki where:

some plugins throw fatal errors
you forgot your super user login credentials
you misconfigured something important

This script will

help to identify problems with the PHP environment
reset some DokuWiki configuration (switching back to defaults and creating a new super user)
Installation and Usage
Download the dokuwiki-recover.php script.
Upload it to your server. It has to be located in the same directory as DokuWiki's doku.php file
Visit http://example.com/dokuwiki/dokuwiki-recover.php (Adjust the address to match where your wiki resides)
Follow the on-screen instructions