这些函数的行为受 php.ini 中的设置影响。
| 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. |
这是配置指令的简短说明。
Specifies whether to allow persistent connections to Ingres
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.
Enables or disables autocommit emulation. Ingres cannot have multiple cursors open with autocommit enabled. When enabled, the driver emulates autocommit.
Specifies the amount of memory to use when reading BLOB data, in bytes
Specifies the default mode for cursors opened with ingres_prepare(). Valid values are INGRES_CURSOR_UPDATE or INGRES_CURSOR_READONLY.
Specifies the default database name to use when connecting to the database server if no other name is specified. Does not apply in SQL 安全模式.
Specifies the default password to use when connecting to the database server if no other name is specified. Does not apply in SQL 安全模式.
Specifies the default user name to use when connecting to the database server if no other name is specified. Does not apply in SQL 安全模式.
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().
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.
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.
Reuses an existing active connection if connecting to the same database with the same user name
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.
Enables simple tracing using E_NOTICE messages
Prints E_NOTICE messages during ingres_connect() or ingres_pconnect() calls
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