The goal of this project is to create a PHP PDO module which provides an interface to use Apache httpd's mod_dbd as backend.

mod_dbd offers a database interface which equipped with all bells and whistles one would expect from a full-fletched Application server: Connection Setup and Teardown, as well as Connection Pooling, Query Preparation

It supports all Databases that apr_dbd supports, while keeping the interface transparent.

As of this writing those are

• FreeTDS (for MSSQL and SyBase)
• MySQL
• Oracle
• PostgreSQL
• SQLite 2 and 3, as well as
• ODBC

php-dbd will only work in an Apache HTTPD environment under mod_php which has mod_dbd loaded.

An application's database conneciton must be configured through httpd.conf and. As of yet, it will only work be able to use one connection per VirtualHost.

There is bug with a patch that addresses this limitation.