运行时配置

这些函数的行为受 php.ini 的影响。

Unified ODBC Configuration Options

Name	Default	Changeable	Changelog
odbc.default_db *	NULL	PHP_INI_ALL
odbc.default_user *	NULL	PHP_INI_ALL
odbc.default_pw *	NULL	PHP_INI_ALL
odbc.allow_persistent	"1"	PHP_INI_SYSTEM
odbc.check_persistent	"1"	PHP_INI_SYSTEM
odbc.max_persistent	"-1"	PHP_INI_SYSTEM
odbc.max_links	"-1"	PHP_INI_SYSTEM
odbc.defaultlrl	"4096"	PHP_INI_ALL
odbc.defaultbinmode	"1"	PHP_INI_ALL
odbc.default_cursortype	"3"	PHP_INI_ALL	Available as of PHP5.3.0

Note: Entries marked with * are not implemented yet.

有关 PHP_INI_* 常量进一步的细节与定义参见php.ini 配置选项。

以下是配置选项的简要解释。

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 boolean

Whether to allow persistent ODBC connections.

odbc.check_persistent boolean

Check that a connection is still valid before reuse.

odbc.max_persistent integer

The maximum number of persistent ODBC connections per process.

odbc.max_links integer

The maximum number of ODBC connections per process, including persistent connections.

odbc.defaultlrl integer

Handling of LONG fields. Specifies the number of bytes returned to variables.

当使用 integer 类型时，其值以字节为度量单位。还可以用简化符号，说明见此 FAQ。

odbc.defaultbinmode integer

Handling of binary data.

odbc.default_cursortype integer

Controles the ODBC cursormodel. Possible values are SQL_CURSOR_FORWARD_ONLY, SQL_CURSOR_KEYSET_DRIVEN, SQL_CURSOR_DYNAMIC and SQL_CURSOR_STATIC (default).