Chris Jones has officially launched the latest OCI8 (Oracle) drivers for PHP - version 1.4.0 Alpha:

I just released an Alpha version of PECL OCI8 1.4 on http://pecl.php.net/package/oci8 The code is also merged to what will eventually be the PHP 5.3.2 and PHP 6.0 releases. Documentation will appear on http://www.php.net/manual/en/ref.oci8.php in the next few days, if all goes according to plan.

Updates in this alpha release include a few new connection attribute functions, a change in the driver name for 11gRD2 connections and a correction of a bug in the oci_bind_by_name error handling.