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Runtime Configuration

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The behaviour of these functions is affected by settings in php.ini.

Ingres configuration options
Name Default Changeable Changelog
ingres.allow_persistent "1" PHP_INI_SYSTEM Available since ingres 1.0.0
ingres.array_index_start "1" PHP_INI_ALL Available since ingres 1.4.0.
ingres.auto "1" PHP_INI_ALL Available since ingres 2.0.0.
ingres.blob_segment_length "4096" PHP_INI_ALL Available since ingres 1.2.0.
ingres.cursor_mode "0" PHP_INI_ALL Available since ingres 1.1.0.
ingres.default_database NULL PHP_INI_ALL Available since ingres 1.0.0
ingres.default_password NULL PHP_INI_ALL Available since ingres 1.0.0
ingres.default_user NULL PHP_INI_ALL Available since ingres 1.0.0
ingres.describe 1 PHP_INI_ALL Available since ingres 2.1.0
ingres.fetch_buffer_size 100 PHP_INI_ALL Available since ingres 2.1.0
ingres.max_links "-1" PHP_INI_SYSTEM Available since ingres 1.0.0
ingres.max_persistent "-1" PHP_INI_SYSTEM Available since ingres 1.0.0
ingres.reuse_connection "1" PHP_INI_ALL Available since ingres 2.0.0
ingres.scrollable "1" PHP_INI_ALL Available since ingres 2.0.0.
ingres.trace "0" PHP_INI_ALL Available since ingres 2.0.0.
ingres.trace_connect "0" PHP_INI_ALL Available since ingres 1.2.1.
ingres.utf8 "1" PHP_INI_ALL Available since ingres 2.0.0.
For further details and definitions of the PHP_INI_* modes, see the Where a configuration setting may be set.

Here's a short explanation of the configuration directives.

ingres.allow_persistent boolean

Specifies whether to allow persistent connections to Ingres

ingres.array_index_start integer

Specifies the start value for an integer key for arrays generated by ingres_fetch_row() or ingres_fetch_array(). By default ingres.array_index_start is set to 1. If you wish to make the ingres extension behave like other database extensions set this configuration option to 0.

ingres.auto boolean

Enables or disables autocommit emulation. Ingres cannot have multiple cursors open with autocommit enabled. When enabled, the driver emulates autocommit.

ingres.blob_segment_length integer

Specifies the amount of memory to use when reading BLOB data, in bytes

ingres.cursor_mode integer

Specifies the default mode for cursors opened with ingres_prepare(). Valid values are INGRES_CURSOR_UPDATE or INGRES_CURSOR_READONLY.

ingres.default_database string

Specifies the default database name to use when connecting to the database server if no other name is specified. Does not apply in SQL safe mode.

ingres.default_password string

Specifies the default password to use when connecting to the database server if no other name is specified. Does not apply in SQL safe mode.

ingres.default_user string

Specifies the default user name to use when connecting to the database server if no other name is specified. Does not apply in SQL safe mode.

ingres.describe boolean

Enables the use of DESCRIBE INPUT to determine the expected data types for queries that use parameters. Available with Ingres 9.1.0 and later. When disabled, queries that have parameters passed may need to manually describe the types of those parameters using the types parameter in ingres_query().

Note:

Enabling this feature with ingres_query() will cause additional communications traffic between this extension and the server. To minimize this additional traffic, use ingres_prepare() and ingres_execute().

ingres.fetch_buffer_size integer

Specifies the number of pre-fetch rows that ingres_fetch_array(), ingres_fetch_object() and ingres_fetch_row() will try and fetch in one fetch operation.

Specifies the maximum number of Ingres sessions allowed per process or thread. The number of sessions should not exceed the total number of connected sessions configured within Ingres.

ingres.max_persistent integer

Specifies the maximum number of persistent Ingres sessions allowed per process or thread. The number of sessions should not exceed the total number of connected sessions configured within Ingres.

ingres.reuse_connection boolean

Reuses an existing active connection if connecting to the same database with the same user name

ingres.scrollable boolean

Enables support for scrollable cursors. When fetching CLOB or BLOB data, this should be set to FALSE. Available with Ingres 9.2.0 or later.

ingres.trace boolean

Enables simple tracing using E_NOTICE messages

ingres.trace_connect boolean

Prints E_NOTICE messages during ingres_connect() or ingres_pconnect() calls

ingres.utf8 boolean

Assumes that strings being passed to National Character column types (NVARCHAR or NCHAR) are using UTF8 encoding and converts them to UTF16 for the server

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Document created the 30/01/2003, last modified the 26/10/2018
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