Mysql_select_db - Manual - PHP

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(PHP 4, PHP 5)

mysql_select_db — Select a MySQL database

Warning

This extension was deprecated in PHP 5.5.0, and it was removed in PHP 7.0.0. Instead, the MySQLi or PDO_MySQL extension should be used. See also MySQL: choosing an API guide. Alternatives to this function include:

• mysqli_select_db()
• PDO::__construct() (part of dsn)

Description

mysql_select_db(string $database_name, resource $link_identifier = NULL): bool

Sets the current active database on the server that's associated with the specified link identifier. Every subsequent call to mysql_query() will be made on the active database.

Parameters

database_name

The name of the database that is to be selected.

link_identifier

The MySQL connection. If the link identifier is not specified, the last link opened by mysql_connect() is assumed. If no such link is found, it will try to create one as if mysql_connect() had been called with no arguments. If no connection is found or established, an E_WARNING level error is generated.

Return Values

Returns true on success or false on failure.

Examples

Example #1 mysql_select_db() example

<?php$link = mysql_connect('localhost', 'mysql_user', 'mysql_password');if (!$link) { die('Not connected : ' . mysql_error());}// make foo the current db$db_selected = mysql_select_db('foo', $link);if (!$db_selected) { die ('Can\'t use foo : ' . mysql_error());}?>

Notes

Note:

For backward compatibility, the following deprecated alias may be used: mysql_selectdb()

See Also

• mysql_connect() - Open a connection to a MySQL Server
• mysql_pconnect() - Open a persistent connection to a MySQL server
• mysql_query() - Send a MySQL query

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