OPcache improves PHP performance Formula was removed
Last versions were
php54-opcache 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.
Bogdan Padalko Remove custom opcache ini config
ilovezfs php54-opcache: bottle revision to rebuild.
Andreas Braun Add description for opcache formula
Andy Blyler cleanup extension testing

Formula code at GitHub