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PHP Manual :: mysql_select_db

mysql_result || mysql_set_charset || MySQL Functions || PHP Manual

(PHP 4, PHP 5)

mysql_select_dbSelect a MySQL database


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 and related FAQ for more information. Alternatives to this function include:


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.



The name of the database that is to be selected.


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.


Example #1 mysql_select_db() example


if (!
$link) {
'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());



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

See Also

mysql_result || mysql_set_charset || MySQL Functions || PHP Manual
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