APC User Cache Formula was removed
Last versions were

Revision: 1

php72-apcu requires the following formulae to be installed:
autoconf 2.69 Automatic configure script builder
pcre 8.42 Perl compatible regular expressions library

Recent formula history

Mike McQuaid Deprecate tap.
Mike McQuaid php72-apcu: use <<~EOS.
Andreas Braun Bump apcu revision
Romain Neutron php72-apcu: Add pcu for 7.2 (new formula)

Formula code at GitHub