Answer Posted / lt

If you are trying to open multiple, separate MySQL
connections with the same MySQL user, password, and
hostname, you must set $new_link = TRUE to prevent
mysql_connect from using an existing connection.
The workaround is to require that the second MySQL
connection is new:

$db1 = mysql_connect($dbhost, $dbuser, $dbpass);
$rv = mysql_select_db($dbname1, $db1);
$db2 = mysql_connect($dbhost, $dbuser, $dbpass, TRUE);
$rv = mysql_select_db($dbname2, $db2);
Source: http://jp2.php.net/manual/en/function.mysql-connect.php
Message from: arithmetric at gmail dot com
26-Mar-2008 03:59

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