Full-stack PHP framework Formula was removed
Last versions were
php54-phalcon 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.
Rich Milns php-phalcon: update versions
Jan Viljanen php-phalcon 2.0.13
Alexander Turiak Phalcon 2.0.10 for PHP 5.4
Alexander Turiak Phalcon 2.0.9

Formula code at GitHub