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

[MyPornLife.info]

thank you Lynne. thank you very much.
especially for

PHP Code:

fetch_userinfo($vbulletin->GPC['u']); 


but still cant do it for Rank
i tried something like this

PHP Code:

require_once('./includes/functions_ranks.php');

$vbulletin->input->clean_array_gpc('r', array(
    'f'    => TYPE_UINT,
    'do'  => TYPE_STR,
    'u'    => TYPE_UINT,
)); 

$rank = fetch_rank($vbulletin->GPC['u']);
$rank = $rank['rankimg'];

echo $rank; 


showing nothing


can u plz help me....plz