Introduction
Introduction – A feature overview
MDB2 Описание
PEAR MDB2 is a merge of the PEAR DB and Metabase php database abstraction layers.
It provides a common API for all support RDBMS. The main difference to most other database abstraction packages is that MDB2 goes much further to ensure portability. Among other things MDB2 features:
- An OO-style query API
- A DSN (data source name) or array format for specifying database servers
- Datatype abstraction and on demand datatype conversion
- Portable error codes
- Sequential and non sequential row fetching as well as bulk fetching
- Ability to make buffered and unbuffered queries
- Ordered array and associative array for the fetched rows
- Prepare/execute (bind) emulation
- Sequence emulation
- Replace emulation
- Limited Subselect emulation
- Row limit support
- Transactions support
- Large Object support
- Index/Unique support
- Module Framework to load advanced functionality on demand
- Table information interface
- RDBMS management methods (creating, dropping, altering)
- Full integration into the PEAR Framework
- PHPDoc API documentation
Currently supported RDBMS:
- MySQL
- MySQLi (PHP5 only)
- PostgreSQL
- Oracle
- Frontbase (unmaintained)
- Querysim
- Interbase/Firebird (PHP5 only)
- MSSQL
- SQLite
Installation
When you install PEAR MDB2, you only get the base classes, but you also need to install the driver of the appropriate DBMS to have a working installation. For instance, to install the MySQL and the PostgreSQL drivers, you have to run these commands:
$ pear install MDB2
$ pear install MDB2#mysql
$ pear install MDB2#pgsql
Still having problems? Check the F.A.Q.