根据时间/时间表交换div可见性 [英] Swap div visibility based on time / schedule

问题描述

在我的页面上，我有两个div ...一个div我希望在上午10点至下午6点(服务器时间)可见.

On my page I have two divs... one div I'd like to be visible from 10am to 6pm ( server time ).... and the other div for the remaining hours.

我尝试了一堆搜索，以找到某种没有任何运气的JavaScript或jquery内容交换器.

I tried a bunch of searches to find some sort of a javascript or jquery content swapper without any luck.. thanks for any suggestions?

<div id="day">content</div>

<div id="night">content</div>

我只能使用以下php来使其工作:

I was able to get this working using only the following php:

<?php
$hour = strftime("%H");
if ($hour >= 02 && $hour < 05)
{
echo '<div id="div1">content block one </div>';
}
else
{
    echo '<div id="div2">content block two</div>';
}?>

但是，如果我要显示从晚上8点至凌晨4点的div，则此解决方案似乎不起作用...是因为这跨越了一天以上?感谢您的任何建议.

However this solution doesn't seem to work if I want to show the div from 8pm until 4am... is this because it is spanning more than one day? Thanks for any suggestions.

推荐答案

编辑

您在评论中提到的案件是一个棘手的案件.所以这是我修改后的答案:

EDIT

The case you mentioned in your comment is a thorny one. So here is my revised-revised answer:

<?php
    $t0 = 20;        // from hour (inclusive) -- int, 0-23
    $t1 = 4;         // till hour (excluding) -- int, 0-23
    $t  = date('G'); // current hour (derived from current time) -- int, 0-23
    if ($t0 == $t1) {
        $in_range = NULL;
    } elseif ($t0 < $t1) {
        $in_range = ($t0 <= $t && $t < $t1);
    } else {
        $in_range = ($t1 <= $t && $t < $t0) == false;
    }
    /*
    echo $in_range === NULL
        ? 'from and till dates must be different'
        : ($in_range ? 'just in time' : 'wait till the time is right');
    */
    if ($in_range === false) {
        $s0 = mktime($t0, 0, 0); // lunch time
        $s  = time();            // current time
        if ($s0 < $s) {
            $s0 += 60 * 60 * 24; // late for lunch! now wait till tomorrow
        }
        $d0 = $s0 - $s;
        $dh = floor($d0 / 60 / 60);
        $dm = $d0 - $dh * 60 * 60; $dm = floor($dm / 60);
        $ds = $d0 - $dh * 60 * 60 - $dm * 60;
        echo sprintf("
            Current date...: %s<br />
            Target date....: %s<br />
            Time to go.....: %d hours, %d minutes, %d seconds
            ",
            date("Y-m-d h:i:s A", $s),
            date("Y-m-d h:i:s A", $s0),
            $dh,
            $dm,
            $ds
        );
    }
?>

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