PEAR MDB2 is a merge of the PEAR DB and Metabase php database abstraction layersIt provides a common API for all supported RDBMS（关系数据库）. The main difference to most other DB abstraction packages is that MDB2 goes much further to ensure portability. MDB2 provides most of its many features optionally that can be used to construct portable SQL statements……
other DB abstraction packages is that MDB2 goes much further to ensure
portability. MDB2 provides most of its many features optionally that
can be used to construct portable SQL statements……