php - 插入的最后一行首先显示

Question

我有以下 PHP 脚本:

<?php
header('Content-type: text/xml');

mysql_connect('localhost', 'root', 'root');

mysql_select_db('sportApp');

if ($_REQUEST['past']) {
    $result = mysql_query('SELECT * FROM chatitems WHERE id > ' . mysql_real_escape_string($_REQUEST['past']) . ' ORDER BY added LIMIT 50');
} else {
    $result = mysql_query('SELECT * FROM chatitems ORDER BY added LIMIT 50');
}
?>
<chat>
    <?php
    while ($row = mysql_fetch_assoc($result)) {
        ?>
        <message added="<?php echo( $row['added'] ) ?>" id="<?php echo( $row['id'] ) ?>">
            <user><?php echo( htmlentities($row['user']) ) ?></user>
            <text><?php echo( htmlentities($row['message'])) ?></text>
            <subtext><?php echo( htmlentities($row['subtext'])) ?></subtext>
            <image><?php echo( htmlentities($row['image']) ) ?></image>
            <ytvideo><?php echo( htmlentities($row['ytvideo']) ) ?></ytvideo>
        </message>
        <?php
    }
    mysql_free_result($result);
    ?>
</chat>

我在本地主机和 MYSQL 表上存储了七个元素，其中一个是 TIMESTAMP，当我插入新行时，时间被保存。问题是我如何订购我的显示按最后添加的行分页[我希望首先显示插入的最后一行，请参阅代码]。请帮忙!

Answer 1

使用 DESC 反转顺序:

ORDER BY added DESC