XCache is a fast, stable ​PHP opcode cacher. Formula was removed
Last version was
php54-xcache requires the following formula to be installed:
autoconf 2.69 Automatic configure script builder

Recent formula history

Mike McQuaid Deprecate tap.
Andreas Braun Add description for xcache formula
Andy Blyler php54-xcache: convert from sha1 to sha256
Andy Blyler fix style issues
Guo Xiao Upgrade XCache version to 3.2.0

Formula code at GitHub