ADOdb

ADOdb is a database abstraction library for PHP Originally based on the same concept as Microsoft's ActiveX Data Objects. It allows developers to write applications in a consistent way regardless of the underlying database system storing the information. The advantage is that the database system can be changed without re-writing every call to it in the application.

ADOdb supports the following databases:

In addition to the Database Abstraction Layer, ADOdb includes the following features:

The product contains a suite of tools to interrogate the attributes of tables, fields and indexes in databases as well as providing cross-database schema management including a full suite of XML based functions.

The standalone Date/Time Library provides a drop-in replacement for PHP date functions, but provide access to dates outside the normal range of dates supported by normal PHP functions.

The standalone session management library allows storing of session data in a database table and/or as encrypted data.