getting username, title, ranks from user id (need php code)

[MyPornLife.info]

i looked in function.php file & found some code...based on those i wrote these code

PHP Code:

$userid = $_REQUEST['u'];

$userinfo = $db->query_read("SELECT username, usertitle, usergroupid FROM " . TABLE_PREFIX . "user WHERE userid=$userid");
$userinfo = $vbulletin->db->fetch_array($userinfo);

$usergroup = $userinfo['usergroupid'];

$username = $userinfo['username'];
$musername = $vbulletin->usergroupcache["$usergroup"]['opentag'] . $username . $vbulletin->usergroupcache["$usergroup"]['closetag'];

$usertitle = $userinfo['usertitle']; 


so it can show username (with html mark) by $musername & that user's title (or custom title) by $usertitle

but what about Ranks

plz help me about RANKS