mysql_select_db

Select a MySQL database

Warning

This extension is deprecated as of PHP 5.5.0, and will be removed in the future. Instead, the MySQLi or PDO_MySQL extension should be used. See also MySQL: choosing an API guide and related FAQ for more information. Alternatives to this function include:

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

Description

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

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 was 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
  • mysql_pconnect
  • mysql_query