预定义常量

下列常量由此扩展定义，且仅在此扩展编译入 PHP 或在运行时动态载入时可用。

SQLSRV_FETCH_ASSOC (integer)

Forces sqlsrv_fetch_array() to return an associative array when passed as a parameter.

SQLSRV_FETCH_NUMERIC (integer)

Forces sqlsrv_fetch_array() to return an array with numeric when passed as a parameter.

SQLSRV_FETCH_BOTH (integer)

Forces sqlsrv_fetch_array() to return an array with both associative and numeric keys when passed as a parameter (the default behavior).

SQLSRV_ERR_ALL (integer)

Forces sqlsrv_errors() to return both errors and warings when passed as a parameter (the default behavior).

SQLSRV_ERR_ERRORS (integer)

Forces sqlsrv_errors() to return errors only (no warnings) when passed as a parameter.

SQLSRV_ERR_WARNINGS (integer)

Forces sqlsrv_errors() to return warnings only (no errors) when passed as a parameter.

SQLSRV_LOG_SYSTEM_ALL (integer)

Turns on logging of all subsystems when passed to sqlsrv_configure() as a parameter.

SQLSRV_LOG_SYSTEM_CONN (integer)

Turns on logging of connection activity when passed to sqlsrv_configure() as a parameter.

SQLSRV_LOG_SYSTEM_INIT (integer)

Turns on logging of initialization activity when passed to sqlsrv_configure() as a parameter.

SQLSRV_LOG_SYSTEM_OFF (integer)

Turns off logging of all subsystems when passed to sqlsrv_configure() as a parameter.

SQLSRV_LOG_SYSTEM_STMT (integer)

Turns on logging of statement activity when passed to sqlsrv_configure() as a parameter.

SQLSRV_LOG_SYSTEM_UTIL (integer)

Turns on logging of error function activity when passed to sqlsrv_configure() as a parameter.

SQLSRV_LOG_SEVERITY_ALL (integer)

Specifies that errors, warnings, and notices will be logged when passed to sqlsrv_configure() as a parameter.

SQLSRV_LOG_SEVERITY_ERROR (integer)

Specifies that errors will be logged when passed to sqlsrv_configure() as a parameter.

SQLSRV_LOG_SEVERITY_NOTICE (integer)

Specifies that notices will be logged when passed to sqlsrv_configure() as a parameter.

SQLSRV_LOG_SEVERITY_WARNING (integer)

Specifies that warnings will be logged when passed to sqlsrv_configure() as a parameter.

SQLSRV_NULLABLE_YES (integer)

Indicates that a column is nullable.

SQLSRV_NULLABLE_NO (integer)

Indicates that a column is not nullable.

SQLSRV_NULLABLE_UNKNOWN (integer)

Indicates that it is not known if a column is nullable.

SQLSRV_PARAM_IN (integer)

Indicates an input parameter when passed to sqlsrv_query() or sqlsrv_prepare().

SQLSRV_PARAM_INOUT (integer)

Indicates a bidirectional parameter when passed to sqlsrv_query() or sqlsrv_prepare().

SQLSRV_PARAM_OUT (integer)

Indicates an output parameter when passed to sqlsrv_query() or sqlsrv_prepare().

SQLSRV_PHPTYPE_INT (integer)

Specifies an integer PHP data type. For usage information, see » How to: Specify PHP Types.

SQLSRV_PHPTYPE_DATETIME (integer)

Specifies a datetime PHP data type. For usage information, see » How to: Specify PHP Types.

SQLSRV_PHPTYPE_FLOAT (integer)

Specifies a float PHP data type. For usage information, see » How to: Specify PHP Types.

SQLSRV_PHPTYPE_STREAM (integer)

Specifies a PHP stream. This constant works like a function and accepts an encoding constant. See the SQLSRV_ENC_* constants. For usage information, see » How to: Specify PHP Types.

SQLSRV_PHPTYPE_STRING (integer)

Specifies a string PHP data type. This constant works like a function and accepts an encoding constant. See the SQLSRV_ENC_* constants. For usage information, see » How to: Specify PHP Types.

SQLSRV_ENC_BINARY (integer)

Specifies that data is returned as a raw byte stream from the server without performing encoding or translation. For usage information, see » How to: Specify PHP Types.

SQLSRV_ENC_CHAR (integer)

Data is returned in 8-bit characters as specified in the code page of the Windows locale that is set on the system. Any multi-byte characters or characters that do not map into this code page are substituted with a single byte question mark (?) character. This is the default encoding. For usage information, see » How to: Specify PHP Types.

UTF-8 (integer)

Specifies that data is returned with UTF-8 encoding. For usage information, see » How to: Specify PHP Types.

SQLSRV_SQLTYPE_BIGINT (integer)

Describes the bigint SQL Server data type. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_BINARY (integer)

Describes the binary SQL Server data type. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_BIT (integer)

Describes the bit SQL Server data type. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_CHAR (integer)

Describes the char SQL Server data type. This constant works like a function and accepts a parameter indicating the number characters. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_DATE (integer)

Describes the date SQL Server data type. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_DATETIME (integer)

Describes the datetime SQL Server data type. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_DATETIME2 (integer)

Describes the datetime2 SQL Server data type. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_DATETIMEOFFSET (integer)

Describes the datetimeoffset SQL Server data type. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_DECIMAL (integer)

Describes the decimal SQL Server data type. This constant works like a function and accepts two parameters indicating (in order) precision and scale. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_FLOAT (integer)

Describes the float SQL Server data type. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_IMAGE (integer)

Describes the image SQL Server data type. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_INT (integer)

Describes the int SQL Server data type. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_MONEY (integer)

Describes the money SQL Server data type. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_NCHAR (integer)

Describes the nchar SQL Server data type. This constant works like a function and accepts a single parameter indicating the character count. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_NUMERIC (integer)

Describes the numeric SQL Server data type. This constant works like a function and accepts two parameter indicating (in order) precision and scale. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_NVARCHAR (integer)

Describes the nvarchar SQL Server data type. This constant works like a function and accepts a single parameter indicating the character count. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_NVARCHAR('max') (integer)

Describes the nvarchar(MAX) SQL Server data type. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_NTEXT (integer)

Describes the ntext SQL Server data type. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_REAL (integer)

Describes the real SQL Server data type. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_SMALLDATETIME (integer)

Describes the smalldatetime SQL Server data type. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_SMALLINT (integer)

Describes the smallint SQL Server data type. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_SMALLMONEY (integer)

Describes the smallmoney SQL Server data type. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_TEXT (integer)

Describes the text SQL Server data type. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_TIME (integer)

Describes the time SQL Server data type. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_TIMESTAMP (integer)

Describes the timestamp SQL Server data type. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_TINYINT (integer)

Describes the tinyint SQL Server data type. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_UNIQUEIDENTIFIER (integer)

Describes the uniqueidentifier SQL Server data type. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_UDT (integer)

Describes the UDT SQL Server data type. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_VARBINARY (integer)

Describes the varbinary SQL Server data type. This constant works like a function and accepts a single parameter indicating the byte count. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_VARBINARY('max') (integer)

Describes the varbinary(MAX) SQL Server data type. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_VARCHAR (integer)

Describes the varchar SQL Server data type. This constant works like a function and accepts a single parameter indicating the character count. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_VARCHAR('max') (integer)

Describes the varchar(MAX) SQL Server data type. For usage information, see » How to: Specify SQL Types.

SQLSRV_SQLTYPE_XML (integer)

Describes the XML SQL Server data type. For usage information, see » How to: Specify SQL Types.

SQLSRV_TXN_READ_UNCOMMITTED (integer)

Indicates a transaction isolation level of READ UNCOMMITTED. This value is used to set the TransactionIsolation level in the $connectionOptions array passed to sqlsrv_connect().

SQLSRV_TXN_READ_COMMITTED (integer)

Indicates a transaction isolation level of READ COMMITTED. This value is used to set the TransactionIsolation level in the $connectionOptions array passed to sqlsrv_connect().

SQLSRV_TXN_REPEATABLE_READ (integer)

Indicates a transaction isolation level of REPEATABLE READ. This value is used to set the TransactionIsolation level in the $connectionOptions array passed to sqlsrv_connect().

SQLSRV_TXN_SNAPSHOT (integer)

Indicates a transaction isolation level of SNAPSHOT. This value is used to set the TransactionIsolation level in the $connectionOptions array passed to sqlsrv_connect().

SQLSRV_TXN_READ_SERIALIZABLE (integer)

Indicates a transaction isolation level of SERIALIZABLE. This value is used to set the TransactionIsolation level in the $connectionOptions array passed to sqlsrv_connect().

SQLSRV_CURSOR_FORWARD (integer)

Indicates a forward-only cursor. For usage information, see » Specifying a Cursor Type and Selecting Rows.

SQLSRV_CURSOR_STATIC (integer)

Indicates a static cursor. For usage information, see » Specifying a Cursor Type and Selecting Rows.

SQLSRV_CURSOR_DYNAMIC (integer)

Indicates a dynamic cursor. For usage information, see » Specifying a Cursor Type and Selecting Rows.

SQLSRV_CURSOR_KEYSET (integer)

Indicates a keyset cursor. For usage information, see » Specifying a Cursor Type and Selecting Rows.

SQLSRV_CURSOR_BUFFERED (integer)

Creates a client-side cursor query. Lets you access rows in any order. For usage information, see » Specifying a Cursor Type and Selecting Rows.

SQLSRV_SCROLL_NEXT (integer)

Specifies which row to select in a result set. For usage information, see » Specifying a Cursor Type and Selecting Rows.

SQLSRV_SCROLL_PRIOR (integer)

Specifies which row to select in a result set. For usage information, see » Specifying a Cursor Type and Selecting Rows.

SQLSRV_SCROLL_FIRST (integer)

Specifies which row to select in a result set. For usage information, see » Specifying a Cursor Type and Selecting Rows.

SQLSRV_SCROLL_LAST (integer)

Specifies which row to select in a result set. For usage information, see » Specifying a Cursor Type and Selecting Rows.

SQLSRV_SCROLL_ABSOLUTE (integer)

Specifies which row to select in a result set. For usage information, see » Specifying a Cursor Type and Selecting Rows.

SQLSRV_SCROLL_RELATIVE (integer)

Specifies which row to select in a result set. For usage information, see » Specifying a Cursor Type and Selecting Rows.