&reftitle.install;

To build the PDO_IBM extension, the DB2 Client v9.1 or later must be installed on the same system as PHP. The DB2 Client can be downloaded from the IBM Application Development Site.

## Note

The DB2 Client v9.1 or later supports direct access to DB2 for Linux, UNIX, and Windows v8 and v9.1 servers.

The DB2 Client v9.1 also supports access to DB2 UDB for i5 and DB2 UDB for z/OS servers using the separately purchased DB2 Connect product.

PDO_IBM is a &link.pecl; extension, so follow the instructions in install.pecl to install the PDO_IBM extension. Issue the `configure` command to point to the location of the DB2 Client header files and libraries as follows:

    bash$ ./configure --with-pdo-ibm=/path/to/sqllib[,shared]

The `configure` command defaults to the value of the `DB2DIR` environment variable.