sometimes you might need to connect to different db within the same app. The trick is that the username, passwd and hostname cannot be the same! The easy way out is to use username as root and password as nothing -> this will cause hours of grief.
another work around is to add another “true” parameter to mysql to indicate the 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);
Now, $db1 should have selected $dbname1, and $db2 should have selected $dbname2.