dbi4php

php4dbi is a database abstraction layer for PHP. It is simple to use (a single file with a simple API) and lean enough to not bloat your PHP application. It provides a common API for accessing a variety of database systems. This allows you to develop your application without limiting it to working on just a single database. Supported databases include MySQL, MS SQL Server, Oracle, PostgreSQL, ODBC, Interbase, SQLite, and IBM DB2. Support for BLOBs is also included.