Search by Date Last Login

I'm sure this has come up before but I'm just not finding it anywhere.

How can I set the profile search results to display by last login time?  is there a way to have users choose multiple sorting options for search results?  Thanks!

bump

Help anyone ?

halp

Try to change the following line in search.php (near ~45 line):

$sSort= (isset($_GET['sort'])) ? process_db_input($_GET['sort'], BX_TAGS_STRIP) : null;

to:

$sSort= (isset($_GET['sort'])) ? process_db_input($_GET['sort'], BX_TAGS_STRIP) : 'activity';