This stem extension for PHP provides stemming capability for a variety of languages. Formula was removed
Last version was
php53-stemmer 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 stemmer formula
Andy Blyler php53-stemmer: convert from sha1 to sha256
Andy Blyler fix style issues
Jack Nagel Move abstract classes out of Formula directory

Formula code at GitHub