A unified Sybase-DB style driver for PDO Formula was removed
Last version was
php54-pdo-dblib requires the following formulae to be installed:
autoconf 2.69 Automatic configure script builder
freetds 1.00.91 Libraries to talk to Microsoft SQL Server and Sybase databases

Recent formula history

Mike McQuaid Deprecate tap.
ilovezfs php54-pdo-dblib: bottle revision to rebuild.
Andy Blyler Revert "php 5.5.34"
Andy Blyler php 5.5.34
Andreas Braun Add description for pdo-dblib formula

Formula code at GitHub