Christopher Jones has noted that the latest version of the OCI8 drivers for PHP (in the PECL extension) have been pushed to the current stable package.
HP's OCI8 1.3.3 has support for Oracle's DRCP connection pooling and Fast Application Notification technologies giving it improved scalability and high availability. Overall, the re-architecture of the connection code is more stable. It fixes some obscure edge case issues and lets it handle re-started DB's better. Basic functionality is unchanged.