PHP Manual: Runtime Configuration

Runtime Configuration

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

**Unified ODBC Configuration Options**
Name	Default	Changeable
odbc.allow_persistent	"1"	`INI_SYSTEM`
odbc.check_persistent	"1"	`INI_SYSTEM`
odbc.max_persistent	"-1"	`INI_SYSTEM`
odbc.max_links	"-1"	`INI_SYSTEM`
odbc.defaultlrl	"4096"	`INI_ALL`
odbc.defaultbinmode	"1"	`INI_ALL`
odbc.default_cursortype	"3"	`INI_ALL`

For further details and definitions of the INI_* modes, see the Where a configuration setting may be set.

Here's a short explanation of the configuration directives.

odbc.default_db string: ODBC data source to use if none is specified in odbc_connect or odbc_pconnect.
odbc.default_user string: User name to use if none is specified in odbc_connect or odbc_pconnect.
odbc.default_pw string: Password to use if none is specified in odbc_connect or odbc_pconnect.
odbc.allow_persistent bool: Whether to allow persistent ODBC connections.
odbc.check_persistent bool: Check that a connection is still valid before reuse.
odbc.max_persistent int: The maximum number of persistent ODBC connections per process.
odbc.max_links int: The maximum number of ODBC connections per process, including persistent connections.
odbc.defaultlrl int: Handling of LONG fields. Specifies the number of bytes returned to variables. See odbc_longreadlen for details.
When an int is used, the value is measured in bytes. Shorthand notation, as described in this FAQ, may also be used.
odbc.defaultbinmode int: Handling of binary data. See odbc_binmode for details.
odbc.default_cursortype int: Controls the ODBC cursor model. Possible values are SQL_CURSOR_FORWARD_ONLY, SQL_CURSOR_KEYSET_DRIVEN, SQL_CURSOR_DYNAMIC and SQL_CURSOR_STATIC (default).