To follow up on this post: the PHP implementation of Avro has been committed to trunk (see https://issues.apache.org/jira/browse/AVRO-627) and will be available in the 1.4.0 release, which is being voted on currently.

On Wed, Aug 25, 2010 at 7:39 PM, Jeremy Hanna <jeremy.hanna1234@gmail.com> wrote:
For those interested in PHP support with avro, there was an interesting email on the avro list.

http://www.apacheserver.net/Avro-PHP-library-at226970.htm