Enables multiple PHP versions to be used in parallel

Current versions

php-build requires the following formulae to be installed:
wget 1.19.4_1 Internet file retriever
autoconf 2.69 Automatic configure script builder

Recent formula history

Mike McQuaid php-build: use <<~EOS.
ilovezfs php-build: bottle revision to rebuild.
Jan Viljanen Update links to homepage, repo and dl url
Andy Blyler Fix brew audit --strict issues
Andy Blyler php-build: convert from sha1 to sha256

Formula code at GitHub