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.