ODBC and DB2 PDO Driver (PDO_ODBC)

Intro

PDO_ODBC is a driver that implements the PHP Data Objects (PDO) interface to enable access from PHP to databases through ODBC drivers or through the IBM DB2 Call Level Interface (DB2 CLI) library. PDO_ODBC currently supports three different "flavours" of database drivers:

ibm-db2

Supports access to IBM DB2 Universal Database, Cloudscape, and Apache Derby servers through the free DB2 express-C client.

unixODBC

Supports access to database servers through the unixODBC driver manager and the database's own ODBC drivers.

generic

Offers a compile option for ODBC driver managers that are not explicitly supported by PDO_ODBC.

On Windows, php_pdo_odbc.dll has to be enabled as extension in Ini. It is linked against the Windows ODBC Driver Manager so that PHP can connect to any database cataloged as a System DSN.

Configure Constants Ini

PDO_ODBC DSNConnecting to ODBC or DB2 databasesDescription The PDO_ODBC Data Source Name (DSN) is composed of the following elements: DSN prefixThe DSN prefix is odbc:. If you are connecting to a database cataloged in the ODBC driver manager or the DB2 catalog, you can append the cataloged name of the database to the DSN.DSNThe name of the database as cataloged in the ODBC driver manager or the DB2 catalog. Alternately, you can provide a complete ODBC connection string to connect to a database as described at Connectionstrings.UIDThe name of the user for the connection. If you specify the user name in the DSN, PDO ignores the value of the user name argument in the PDO constructor.PWDThe password of the user for the connection. If you specify the password in the DSN, PDO ignores the value of the password argument in the PDO constructor.Changelog VersionDescription8.4.0When passing an empty string to the password argument in the PDO constructor, pwd was not included in the connection string created until now, but the behavior has been changed to include it as an empty string. Passing null for the password argument in the PDO constructor results in the same behavior as before.8.4.0Changed the behavior to ignore the user name argument and the password argument in the PDO constructor separately when the DSN contains uid or pwd. Previously, if included only either uid or pwd in the DSN, both the user name argument and the password argument in the PDO constructor were ignored.Examples PDO_ODBC DSN example (ODBC driver manager)The following example shows a PDO_ODBC DSN for connecting to an ODBC database cataloged as testdb in the ODBC driver manager:odbc:testdbPDO_ODBC DSN example (IBM DB2 uncataloged connection)The following example shows a PDO_ODBC DSN for connecting to an IBM DB2 database named SAMPLE using the full ODBC DSN syntax:odbc:DRIVER={IBM DB2 ODBC DRIVER};HOSTNAME=localhost;PORT=50000;DATABASE=SAMPLE;PROTOCOL=TCPIP;UID=db2inst1;PWD=ibmdb2;PDO_ODBC DSN example (Microsoft Access uncataloged connection)The following example shows a PDO_ODBC DSN for connecting to a Microsoft Access database stored at C:\db.mdb using the full ODBC DSN syntax:odbc:Driver={Microsoft Access Driver (*.mdb)};Dbq=C:\\db.mdb;Uid=Admin