Yep, PATH_INFO stuff works waaaay differently in Apache 2.0.
For instance, this site required the PhpWiki:PrettyWiki .htaccess to read:
<Files space>
AcceptPathInfo on
SetOutputFilter PHP
SetInputFilter PHP
</Files>
Instead of the old tried-and-true
<Files wiki>
ForceType application/x-httpd-php
</Files>
Also, as a sidenote, the RedHat 8.x defaults for PHP break almost every single template in this Wiki. Mind you, the RedHat guys have their stuff correctly set up - it's just that the syntax here has been deprecated.