Outputting in multiple rows but with pagenav as well ??

[cinq]

I have a table for data items, cars stored in the database.

I want to have a page which lists all the cars stored in the database ( thumbnails of the cars ).

How am I to go about outputting them in a single page, in rows of 5 thumbnails, for a total of 4 rows ( ie. 20 per page ) and then have page navigation ( ie. each page has 20 thumbnails ).


How do I go about limiting the sql queries in this case ?

The hack I am working on is based on magnus's vgarage.

The current code now stands at :

PHP Code:

if ($_REQUEST['do'] == 'list')
{
    globalize($_REQUEST, array('pagenumber' => INT, 'perpage' => INT));

    $perpage = intval($perpage);

    if ($perpage == 0 or $perpage > 200)
    {
        $perpage = 20;
    }

    if (intval($pagenumber) == 0)
    {
        $pagenumber = 1;
    }

    $limitlower = ($pagenumber - 1) * $perpage + 1;
    $limitupper = ($pagenumber) * $perpage;
    $counter = 0;

    $carcount = $DB_site->query_first("
        SELECT COUNT(*) AS cars FROM " . TABLE_PREFIX . "vbgarage_users
    ");

    $numberpages = $carcount['cars'] / $perpage;
    $numberpages = ceil($numberpages);

    if (!isset($pagenumber) or ($pagenumber < 1) or ($pagenumber > $numberpages))
    $pagenumber = 1;

    $pos = ($pagenumber - 1) * $perpage;

    $result_list = $DB_site->query("SELECT * FROM vbgarage_users ORDER BY lastactivity DESC LIMIT $pos,$perpage ");
    $counter = 0;

    while ($list = $DB_site->fetch_Array($result_list) AND $counter++ < $perpage)
    {
        $list['lastactivity'] = vbdate($vboptions['dateformat'],$list['lastactivity'],true);
        $user = fetch_userinfo($list[userid]);
        $cid = $list['carid'];
        $result_list2 = $DB_site->query("SELECT * FROM vbgarage_comments WHERE carid=$cid");
        $numcomments = mysql_num_rows($result_list2);
        $result_list1 = $DB_site->query("SELECT * FROM vbgarage_images WHERE carid=$cid ORDER BY imageid DESC LIMIT 1");

           while ($list1 = $DB_site->fetch_Array($result_list1))
           {
             eval('$latestbits .= "' . fetch_template('vbgarage_latestbits') . '";');
           }
    }
 
     $pagenav = construct_page_nav($carcount[cars],"vbgarage.php?$session[sessionurl]do=$_REQUEST[do]&perpage=$perpage");
     eval('print_output("' . fetch_template('vbgarage_listgarage') . '");');
}