Extension for MaxMind DB file format Formula was removed
Last version was
php71-maxminddb requires the following formulae to be installed:
autoconf 2.69 Automatic configure script builder
libmaxminddb 1.3.2 C library for the MaxMind DB file format

Recent formula history

Mike McQuaid Deprecate tap.
Boris Klimenko php-maxminddb 1.2.0
Bogdan Padalko php71-maxminddb 1.1.0 (new formula)

Formula code at GitHub