This repo is no longer maintained. Consider using homebrew/php.
PHP 5.4 formulae micro-repo
There is an existing PHP repository that provides 5.4 via --devel option, but it's old. At the time of creating this repo, PHP is of version 5.4.3, and it will update, so the key objective was to provide an up-to-date PHP formula.
For the moment, the repository does not contain any PHP extensions - they can be easily installed with phpize and then manually added to php.ini.
Open your favorite terminal and type:
$ brew tap tzvetkoff/php54
$ brew install php
php
phpsh