&reftitle.runtime; &extension.runtime;

# ibm_db2 &ConfigureOptions;

&Name; | &Default; | &Changeable; | Changelog
ibm_db2.binmode | "1" | PHP_INI_ALL |
ibm_db2.i5_all_pconnect | "0" | PHP_INI_SYSTEM | Available since ibm_db2 1.6.5.
ibm_db2.i5_allow_commit | "0" | PHP_INI_SYSTEM | Available since ibm_db2 1.4.9.
ibm_db2.i5_dbcs_alloc | "0" | PHP_INI_SYSTEM | Available since ibm_db2 1.5.0.
ibm_db2.instance_name | NULL | PHP_INI_SYSTEM | Available since ibm_db2 1.0.2.
ibm_db2.i5_ignore_userid | "0" | PHP_INI_SYSTEM | Available since ibm_db2 1.8.0.

&ini.descriptions.title;

`ibm_db2.binmode` `int`

- This option controls the mode used for converting to and from binary data in the PHP application.

  - 1 (DB2_BINARY)

  - 2 (DB2_CONVERT)

  - 3 (DB2_PASSTHRU)

`ibm_db2.i5_all_pconnect` `int`

- This option overrides i5 `db2_connect` full open and close in the PHP application. When `ibm_db2.i5_all_pconnect` = 1, all db2 connections become persistent (`db2_pconnect`). On i5/OS, `db2_pconnect` performs dramatically better with lower machine stress over `db2_connect`. This is a convenience override of `db2_connect` to evoke `db2_pconnect` without PHP source code changes.

  - 0 `db2_connect` default full open and close

  - 1 `db2_connect` override to `db2_pconnect` for persistent connection only

`ibm_db2.i5_allow_commit` `int`

- This option controls the isolation mode used for i5 schema collections in the PHP application (see `i5_commit` for override).

  - 0 - commitment control is not used

  - 1 - read uncommitted, dirty reads possible.

  - 2 - read committed, dirty reads are not possible.

  - 3 - repeatable read, dirty reads and non-repeatable reads are not possible

  - 4 - serializeable, dirty reads, non-repeatable reads, and phantoms are not possible

`ibm_db2.i5_dbcs_alloc` `int`

- This option controls the internal ibm_db2 allocation scheme for large DBCS column buffers.

  - 0 no expanded allocations (see `i5_dbcs_alloc` for override)

  - 1 use expanded allocations (see `i5_dbcs_alloc` for override)

`ibm_db2.instance_name` `string`

- On Linux and UNIX operating systems, this option defines the name of the instance to use for cataloged database connections. If this option is set, its value overrides the DB2INSTANCE environment variable setting.

  This option is ignored on Windows operating systems.

`ibm_db2.i5_ignore_userid` `int`

- This option overrides i5 db2_(p)connect userid and password in the PHP application. When `ibm_db2.i5_ignore_userid` = 1, all db2 (p)connections become null userid and null password. Therefore Apache jobs connect with the current profile (NOBODY). Use of this override is only for simple DB2 based websites that never require profile switching and therefore can avoid all overhead of server mode additional QSQSRVR jobs. This is a convenience override of db2_(p)connect to set the userid and password values to null without PHP source code changes. This override can be used in combination with `ibm_db2.i5_all_pconnect` = 1.

  - 0 db2_(p)connect with specified userid and password

  - 1 db2_(p)connect override connect with null userid and null password