PHP Firebird API: php_interbase or PDO?

We have been using PDO for 2 years in new scenarios to connect to our MySQL, PostgreSQL and SQLite databases.

Now we are starting a project in which we will need to read (and possibly some simple UPDATE files) a Firebird 2.5 database file. I would like to use PDO since we are already using it and it will be less transitional. However, the PDO_FIREBIRD PECL package seems to be last updated in 2006.

So my question is: is it better to use the Firebird PDO driver or php_interbase API for a new project? That is, is the production of the PDO Firebird driver worthy?