ADOdb是Active Data Objects database的简称，它是一种PHP访问数据库的函式组件。它允许进程员以一致的方式来访问数据库，从而忽略后台数据库的种类的差异。它的优势是能让进程员在转移数据库平台时，可以不用花费大量时间重新书写代码。它支持以下数据库：

MySQL、PostgreSQL、Interbase、Firebird、Informix、Oracle、MS SQL、Foxpro、Access、ADO、Sybase、FrontBase、IBM DB2、SAP DB、SQLite、Netezza、LDAP以及一般ODBC、ODBTP。

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.