In Kloxo-MR 7.0 terms, 'php branch' is php installed using 'yum install' (only possible 1 version at the same times).
'multiple php' (need enable 'Multiple PHP Enable (for 'php-fpm') ' in 'admin > servers > localhost > php configure') are php installed using 'special treatment' (possible multiple php at the same times).
'php used' is 'default php version' if not selected other version for certain domain.
In Kloxo-MR 7.0, possible using different version for every domain via 'admin > all > all domains > (select one) > web features'.
Apc/apcu are the same functions (target to php opcode) with xcache and opcache where memcached/redis are cache different functions (target to database).