Руководство по PHP
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# LXXXVIII. Microsoft SQL Server Functions

# Введение

These functions allow you to access MS SQL Server database.

# Требования

Requirements for Win32 platforms.

The extension requires the MS SQL Client Tools to be installed on the system where PHP is installed. The Client Tools can be installed from the MS SQL Server CD or by copying `ntwdblib.dll` from `\winnt\system32` on the server to `\winnt\system32` on the PHP box. Copying `ntwdblib.dll` will only provide access. Configuration of the client will require installation of all the tools.

Requirements for Unix/Linux platforms.

To use the MSSQL extension on Unix/Linux, you first need to build and install the FreeTDS library. Source code and installation instructions are available at the FreeTDS home page: http://www.freetds.org/

> Замечание: In Windows, the DBLIB from Microsoft is used. Functions that return a column name are based on the dbcolname() function in DBLIB. DBLIB was developed for SQL Server 6.x where the max identifier length is 30. For this reason, the maximum column length is 30 characters. On platforms where FreeTDS is used (Linux), this is not a problem.

# Установка

The MSSQL extension is enabled by adding extension=php_mssql.dll to `php.ini`.

To get these functions to work, you have to compile PHP with --with-mssql[=DIR], where DIR is the FreeTDS install prefix. And FreeTDS should be compiled using --enable-msdblib.

# Настройка во время выполнения

Поведение этих функций зависит от установок в `php.ini`.

Таблица 1. MS SQL Server configuration options

Name | Default | Changeable | Changelog
--- | --- | --- | ---
mssql.allow_persistent | "1" | PHP_INI_SYSTEM |
mssql.max_persistent | "-1" | PHP_INI_SYSTEM |
mssql.max_links | "-1" | PHP_INI_SYSTEM |
mssql.min_error_severity | "10" | PHP_INI_ALL |
mssql.min_message_severity | "10" | PHP_INI_ALL |
mssql.compatability_mode | "0" | PHP_INI_ALL |
mssql.connect_timeout | "5" | PHP_INI_ALL |
mssql.timeout | "60" | PHP_INI_ALL | Available since PHP 4.1.0.
mssql.textsize | "-1" | PHP_INI_ALL |
mssql.textlimit | "-1" | PHP_INI_ALL |
mssql.batchsize | "0" | PHP_INI_ALL | Available since PHP 4.0.4.
mssql.datetimeconvert | "1" | PHP_INI_ALL | Available since PHP 4.2.0.
mssql.secure_connection | "0" | PHP_INI_SYSTEM | Available since PHP 4.3.0.
mssql.max_procs | "-1" | PHP_INI_ALL | Available since PHP 4.3.0.

Для подробного описания констант PHP_INI_*, обратитесь к документации функции ini_set().

# Типы ресурсов

# Предопределенные константы

Перечисленные ниже константы определены данным расширением и могут быть доступны только в том случае, если PHP был собран с поддержкой этого расширения или же в том случае, если данное расширение подгружается во время выполнения.

`MSSQL_ASSOC` (integer)

`MSSQL_NUM` (integer)

`MSSQL_BOTH` (integer)

`SQLTEXT` (integer)

`SQLVARCHAR` (integer)

`SQLCHAR` (integer)

`SQLINT1` (integer)

`SQLINT2` (integer)

`SQLINT4` (integer)

`SQLBIT` (integer)

`SQLFLT8` (integer)

Пред. | Начало | След.
udm_set_agent_param | Уровень выше | mssql_bind