A wrapper for the ICU library Formula was removed
Last version was

Revision: 4

php54-intl requires the following formulae to be installed:
autoconf 2.69 Automatic configure script builder
icu4c 61.1 C/C++ and Java libraries for Unicode and globalization

Recent formula history

Mike McQuaid Deprecate tap.
Mike McQuaid php54-intl: use <<~EOS.
Jan Viljanen php53/54-intl: revision bump due to icu4c update
Andreas Braun php{53-71}-intl: update revision to rebuild bottles
Bogdan Padalko Bump intl-dependant formulas revision

Formula code at GitHub