MySQL and PHP
Copyright 1997-2021 the PHP Documentation Group.
mysql_select_db
Select 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:
mysqli_select_db
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PDO::__construct (part of dsn) |
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.
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.
Returns true
on success or
false
on failure.
Example 6.52 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()); } ?>
For backward compatibility, the following deprecated alias may
be used: mysql_selectdb
mysql_connect
|
mysql_pconnect
|
mysql_query
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