(PHP 4, PHP 5)
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. Alternatives to this function include:
$database_name, resource $link_identifier = NULL): boolSets 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_nameThe name of the database that is to be selected.
link_identifierThe 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 #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());
}
?>
Note:
For backward compatibility, the following deprecated alias may be used: mysql_selectdb()