dongtong0796 2013-03-27 15:06
浏览 87
已采纳

显示最接近当前日期和时间的结果(MySQL和PHP)

I'm trying to make a query but after hours of trying I can't seem to get it right. What I'm trying to do is showing 1 thing from a database that is closest to the currect date & time and after the current date & time.

my columns look like this:

  date         time
1364399654     15:00
1364684400     16:00
1367272800     12:00

my PHP looks like this:

$timestamp_now = strtotime(date('d-m-Y')); //Creates a timestamp of the currect date
$time_now = date('H:i');
$sql = mysql_query('SELECT * FROM table_name ORDER BY date ASC, time ASC (WHERE date > '.$timestamp_now.') AND (time > "'.$time_now.'") LIMIT 1') or die(mysql_error());
$data = mysql_fetch_array($sql);

However, this doesn't work. Any words of advice?

  • 写回答

3条回答 默认 最新

  • douao8204 2013-03-27 15:13
    关注

    I would ditch using the PHP date/time methods and rely on MySQL giving a query that looks like

    SELECT * FROM table_name 
    WHERE date > CURRENT_DATE
    OR (
        date = CURRENT_DATE
        AND 
        time > CURRENT_TIME
    )
    ORDER BY date ASC, time ASC LIMIT 1
    

    The OR makes sure that it gets the correct records else the TIME portion would block i.e. a result at 03:00 from the next day from appearing if the current time was at 06:00

    I see you are using timestamp values there so you can always still pass in the PHP date numeric in place of CURRENT_DATE. This would give a final script of

    $timestamp_now = strtotime(date('d-m-Y')); //Creates a timestamp of the currect date
    $sql = mysql_query('SELECT * FROM table_name 
                        WHERE date > '.$timestamp_now.'
                        OR (
                            date = '.$timestamp_now.'
                            AND 
                            time > CURRENT_TIME
                        )
                        ORDER BY date ASC, time ASC LIMIT 1') or die(mysql_error());
    $data = mysql_fetch_array($sql);
    

    I would advise considering changing the database if possible to store just as a MySQL DATETIME field, as then you can change this query to simply WHERE datetime > NOW(), but that's entirely up to you. Just have always found MySQL date handling more logical than PHPs.

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论
查看更多回答(2条)

报告相同问题?

悬赏问题

  • ¥15 请问有会的吗,用MATLAB做
  • ¥15 phython如何实现以下功能?查找同一用户名的消费金额合并—
  • ¥15 ARIMA模型时间序列预测用pathon解决
  • ¥15 孟德尔随机化怎样画共定位分析图
  • ¥18 模拟电路问题解答有偿速度
  • ¥15 CST仿真别人的模型结果仿真结果S参数完全不对
  • ¥15 误删注册表文件致win10无法开启
  • ¥15 请问在阿里云服务器中怎么利用数据库制作网站
  • ¥60 ESP32怎么烧录自启动程序,怎么查看客户esp32板子上程序及烧录地址
  • ¥50 html2canvas超出滚动条不显示