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I released PHP OCI8 2.0.7 at http://pecl.php.net/package/oci8 (It will also be included in the to-be-released PHP 5.6)
The major change in this release is support for binding PL/SQL BOOLEAN type when using Oracle Database 12c.
See https://blogs.oracle.com/opal/entry/support_for_pl_sql_boolean