㈠ 用JavaScript或php怎么写一个倒计时时钟啊
这个是JavaScript的
距离北京奥运会开幕还有
<br>
<html>
<head>
<title>倒计时测试</title>
<!--倒计时设置代码-->
<script language="JavaScript">
<!-- hide script from old browser
var DifferenceHour = -1
var DifferenceMinute = -1
var DifferenceSecond = -1
var Tday = new Date("Aug 8, 2008 20:00:00") //**倒计时时间点-注意格式
var daysms = 24 * 60 * 60 * 1000
var hoursms = 60 * 60 * 1000
var Secondms = 60 * 1000
var microsecond = 1000
function clock()
{
var time = new Date()
var hour = time.getHours()
var minute = time.getMinutes()
var second = time.getSeconds()
var timevalue = ""+((hour > 12) ? hour-12:hour)
timevalue +=((minute < 10) ? ":0":":")+minute
timevalue +=((second < 10) ? ":0":":")+second
timevalue +=((hour >12 ) ? " PM":" AM")
// document.formnow.now.value = timevalue
var convertHour = DifferenceHour
var convertMinute = DifferenceMinute
var convertSecond = DifferenceSecond
var Diffms = Tday.getTime() - time.getTime()
DifferenceHour = Math.floor(Diffms / daysms)
Diffms -= DifferenceHour * daysms
DifferenceMinute = Math.floor(Diffms / hoursms)
Diffms -= DifferenceMinute * hoursms
DifferenceSecond = Math.floor(Diffms / Secondms)
Diffms -= DifferenceSecond * Secondms
var dSecs = Math.floor(Diffms / microsecond)
if(convertHour != DifferenceHour) document.formnow.dd.value=DifferenceHour
if(convertMinute != DifferenceMinute) document.formnow.hh.value=DifferenceMinute
if(convertSecond != DifferenceSecond) document.formnow.mm.value=DifferenceSecond
document.formnow.ss.value=dSecs
// document.formnow.Tnow.value= DifferenceHour DifferenceMinute + DifferenceSecond + dSecs
setTimeout("clock()",1000)
}
// end hiding -->
</script>
</head>
<!--BODY里面的ONLOAD注意-->
<body onload="clock();return true" text="red">
<!--实现显示-->
<form name="formnow">
<input name="dd" type="text" style="border:0;" size=2>
天
<input name="hh" type="text" style="border:0;" size=2>
小时
<input name="mm" type="text" style="border:0;" size=2>
分
<input name="ss" type="text" style="border:0;" size=2>
秒
</form>
<!--倒计时完毕-->
这个是php的
<?php
/**************************************
**功能：PHP实时倒计时
**创建日期：2009-2-26
**作者：潘继强 <[email protected]>
**
***************************************/
//php的时间是以秒算。js的时间以毫秒算
date_default_timezone_set("Asia/Hong_Kong");//地区
//配置每天的活动时间段
$starttimestr = "09:00:00";
$endtimestr = "18:30:00";
$starttime = strtotime($starttimestr);
$endtime = strtotime($endtimestr);
$nowtime = time();
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>PHP实时倒计时!</title>
<script language="JavaScript">
<!-- //
var EndTime=<?=$endtime*1000?>;
var NowTime = new Date();
//计算出服务器和客户端的时间差。
var dTime = NowTime.getTime()-<?=$nowtime*1000?>;
var runtimes = 0;
function GetRTime(){
var NowTime = new Date();
var dTimeNew = NowTime.getTime()-<?=$nowtime*1000?>;
var dTimesM = Math.abs(Math.floor((dTimeNew-runtimes*1000-dTime)/1000));//客户端时间和服务器当前时间的差
if (dTimesM>1) {//如果用户修改了客户端时间，就重新load本页
window.location.reload();
}
var nMS = EndTime - NowTime.getTime()+dTime;
var nH=Math.floor(nMS/(1000*60*60)) % 24;
var nM=Math.floor(nMS/(1000*60)) % 60;
var nS=Math.floor(nMS/1000) % 60;
document.getElementById("RemainH").innerHTML=nH;
document.getElementById("RemainM").innerHTML=nM;
document.getElementById("RemainS").innerHTML=nS;
if(nMS>5*59*1000&&nMS<=5*60*1000)
{
alert("还有最后五分钟！");
}
runtimes++;
setTimeout("GetRTime()",1000);
}
window.onload=GetRTime;
// -->
</script>
</head>
<body>
<h1><strong id="RemainH">XX</strong>:<strong id="RemainM">XX</strong>:<strong id="RemainS">XX</strong></h1>
</body>
</html>
实例3:
思路不同,简单多了.
<?php
/**************************************
**功能：PHP实时倒计时
**创建日期：2009-2-26
**作者：潘继强 <[email protected]>
**
***************************************/
//php的时间是以秒算。js的时间以毫秒算
date_default_timezone_set("Asia/Hong_Kong");//地区
//配置每天的活动时间段
$starttimestr = "09:00:00";
$endtimestr = "13:50:00";
$starttime = strtotime($starttimestr);
$endtime = strtotime($endtimestr);
$nowtime = time();
if ($nowtime<$starttime){
die("活动还没开始,活动时间是：{$starttimestr}至{$endtimestr}");
}
$lefttime = $endtime-$nowtime; //实际剩下的时间（秒）
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>PHP实时倒计时!</title>
<script language="JavaScript">
<!-- //
var runtimes = 0;
function GetRTime(){
var nMS = <?=$lefttime?>*1000-runtimes*1000;
var nH=Math.floor(nMS/(1000*60*60))%24;
var nM=Math.floor(nMS/(1000*60)) % 60;
var nS=Math.floor(nMS/1000) % 60;
document.getElementById("RemainH").innerHTML=nH;
document.getElementById("RemainM").innerHTML=nM;
document.getElementById("RemainS").innerHTML=nS;
if(nMS>5*59*1000&&nMS<=5*60*1000)
{
alert("还有最后五分钟！");
}
runtimes++;
setTimeout("GetRTime()",1000);
}
window.onload=GetRTime;
// -->
</script>
</head>
<body>
<h1><strong id="RemainH">XX</strong>:<strong id="RemainM">XX</strong>:<strong id="RemainS">XX</strong></h1>
</body>
</html>
另外，楼下的那个冷笑天只是一个秒表，不知道楼主要的是秒表还是倒计时，要是还有什么其他需要或者代码看不懂的，m我
呵呵呵
㈡ 求倒计时代码，js，php都行。格式： 距高考还有 145 天
echo'距2015年高考还有'.(strtotime('2015-06-07')-strtotime(date('Y-m-d')))/(24*3600).'天';