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- Mssql 函数
mssql_select_db
(PHP 4, PHP 5, PECL odbtp >= 1.1.1)
mssql_select_db — Select MS SQL database
WarningThis function was REMOVED in PHP 7.0.0.
Alternatives to this function include:
- PDO_SQLSRV DSN
- PDO_ODBC DSN
- sqlsrv_connect()
- odbc_connect()
说明
mssql_select_db ( string$database_name
[, resource $link_identifier
] ) : bool
mssql_select_db() sets the current active database on the server that's associated with the specified link identifier.
Every subsequent call to mssql_query() will be made on the active database.
参数
-
database_name -
The database name.
To escape the name of a database that contains spaces, hyphens ("-"), or any other exceptional characters, the database name must be enclosed in brackets, as is shown in the example, below. This technique must also be applied when selecting a database name that is also a reserved word (such as primary).
-
link_identifier -
A MS SQL link identifier, returned by mssql_connect() or mssql_pconnect().
If no link identifier is specified, the last opened link is assumed. If no link is open, the function will try to establish a link as if mssql_connect() was called, and use it.
返回值
成功时返回 TRUE， 或者在失败时返回 FALSE。
范例
Example #1 mssql_select_db() example
<?php
// Create a link to MSSQL
$link = mssql_connect('KALLESPC\SQLEXPRESS', 'sa', 'phpfi');
// Select the database 'php'
mssql_select_db('php', $link);
?>
Example #2 Escaping the database name with square brackets
<?php
// Create a link to MSSQL
$link = mssql_connect('KALLESPC\SQLEXPRESS', 'sa', 'phpfi');
// Select the database 'my.database-name'
mssql_select_db('[my.database-name]', $link);
?>
参见
- mssql_connect() - 打开MS SQL server链接
- mssql_pconnect() - Open persistent MS SQL connection
- mssql_query() - Send MS SQL query
User Contributed Notes 2 notes
up down -1 jack at downeastinternet dot com ¶8 years ago
I have noted that mssql_select_db fails if the database name contains a dash or hyphen. for example a database named foo-bar will fail and the error that is returned indicates that the name was interpreted as only 'foo'
up
down
-2
edoceo ¶10 years ago
Use of square brackets to enclose the database name is also necessary if the name contains a dot: '.'
e.g.
mssql_select_db('Company.ERP');
Produces the error:
Warning: mssql_select_db(): Sybase: Server message: Could not locate entry in sysdatabases for database 'Company'. No entry found with that name. Make sure that the name is entered correctly. (severity 16, procedure N/A) in
mssql_select_db('[Company.ERP]');
Will select successfully
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官方地址：https://www.php.net/manual/en/function.mssql-select-db.php