Различные вопросы по PHP и MySQL

/*
        -----------------------------------------------------------------
        Редактирование
        -----------------------------------------------------------------
        */

    case 'edit':

        if ($rights >= 6) {
            echo '<div class="phdr"><a href="?"><b>O`yinlarga</b></a> | Taxrirlash</div>';
            if (!$id) {
                echo functions::display_error($lng['error_wrong_data'], '<a href="?">O`yinlarga</a>');
                require('../incfiles/end.php');
                exit;
            }

            if (isset($_POST['submit'])) {
 $req_u = mysql_query("SELECT `id`, `name`, `sex`, `rights`, `lastdate`, `status`, `datereg`, `ip`, `browser` FROM `users` WHERE `id` = '" . $user_id . "'");
$res_u = mysql_fetch_assoc($req_u);
                $error = array();
                if (empty($_POST['name']))
                    $error[] = 'Nomida xatolik';

                $name = functions::check($_POST['name']);
                $name = $_POST['name'];

                if (!$error) {
                    mysql_query("UPDATE `ud_turnir_jad` SET
                        `time` = '" . time() . "',
                        `name` = '" . mysql_real_escape_string($name) . "',
                        `ii` = '" . $ii . "',
`vv` = '" . $vv . "',
`nn` = '" . $nn . "',
`pp` = '" . $pp . "',
`zz` = '" . $zz . "',
`pp2` = '" . $pp2 . "',
`pm` = '" . $pm . "',
`o` = '" . $o . "',
`user_id` = '" . $user_id . "',
`avtor` = '" . $res_u['name'] . "',
`count` = `count`+0
                        WHERE `id` = '$id'
                    ");
echo '<p>Qo`shildi<br /><a href="?">O`yinlarga</a></p>';
                } else {
                    echo functions::display_error($error, '<a href="?mod=edit&amp;id=' . $id . '">' . $lng['repeat'] . '</a>');
                }
                echo '<p>' . $lng_news['article_changed'] . '<br /><a href="?">' . $lng['continue'] . '</a></p>';
            }else {
                $req = mysql_query("SELECT * FROM `ud_turnir_jad` WHERE `id` = '$id'");
                $res = mysql_fetch_assoc($req);

                echo '<form action="?mod=edit&amp;id=' . $id . '" method="post"><div class="menu">' .
                     '<p><h3>Jamoa nomi:</h3>' .
                     '<input type="text" name="name" value="' . htmlentities($res['name'], ENT_QUOTES, 'UTF-8') . '"/></p>' .
 
                     '<p><h3>I:</h3>' .
                     '<input type="text" name="ii" value="' . htmlentities($res['ii'], ENT_QUOTES, 'UTF-8') . '"/></p>' .
 
                     '<p><h3>V:</h3>' .
                     '<input type="text" name="vv" value="' . htmlentities($res['vv'], ENT_QUOTES, 'UTF-8') . '"/></p>' .
 
                     '<p><h3>N:</h3>' .
                     '<input type="text" name="nn" value="' . htmlentities($res['nn'], ENT_QUOTES, 'UTF-8') . '"/></p>' .
 
 '<p><h3>P:</h3>' .
                     '<input type="text" name="pp" value="' . htmlentities($res['pp'], ENT_QUOTES, 'UTF-8') . '"/></p>' .
 '<p><h3>Z:</h3>' .
                     '<input type="text" name="zz" value="' . htmlentities($res['zz'], ENT_QUOTES, 'UTF-8') . '"/></p>' .
 '<p><h3>P:</h3>' .
                     '<input type="text" name="pp2 value="' . $res['pp2'] . '""/></p>' .
 '<p><h3>+/-:</h3>' .
                     '<input type="text" name="pm" value="' . htmlentities($res['pm'], ENT_QUOTES, 'UTF-8') . '"/></p>' .
 '<p><h3>O:</h3>' .
                     '<input type="text" name="o" value="' . htmlentities($res['o'], ENT_QUOTES, 'UTF-8') . '"/></p>' .
 '';
                echo '<div class="bmenu">' .
                     '<input type="submit" name="submit" value="Qo`shish"/>' .
                     '</div></form>' .
                     '<p><a href="?">O`yinlarga</a></p>';

}
            
        } else {
            header('location: ?');
        }
        break;