retrieve data using function

[New_Coder]

Hi,
I write any function for show user list :

function UserList()
{
    global $tableprefix;
    static $options;
    $sql = " SELECT user_id,user_name  FROM " . $tableprefix . "users ORDER BY user_name";
    $resoptions = mysql_query($sql);
    $numoptions = mysql_num_rows($resoptions);
    if ($numoptions > 0) {
        while (list($stid, $stname) = mysql_fetch_row($resoptions)) {
            $options[$stid] = $stname ;
        }
    }
    return $options;
}

Now for show user list :

echo UserList(); 

my output is : array .

how to retrieve data using my function!!

SORRY IM NEW CODER OF PHP .

[dagon]

array is your data, you access it like nay other array

print_r(UserList());

[New_Coder]

Thanks dagon .
This show my array ! now how to merge this with html template. example :
list data in <UL><LI>test1</LI><LI>test2</LI><LI>test3</LI></UL> .

[johanafm]

. is the concatenation operator, i.e. it's ised to concatenate strings
[man]implode[/man] is used to turn arrays into strings.