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<?php //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 = "14:20:00"; $starttime = strtotime($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> </head> <body> <h1><strong id="RemainH">XX</strong>:<strong id="RemainM">XX</strong>:<strong id="RemainS">XX</strong></h1> </body> <script type="text/javascript"> var runtimes = 0; function GetRTime(){ var nMS = <?=$lefttime?>*1000-runtimes*1000; //等价于 <? echo $lefttime?>*1000-runtimes*1000; if(nMS<0){ return false; } 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; runtimes++; setTimeout("GetRTime()",1000); if(nH==0&&nM==0&&nS==0){ alert(‘时间结束!‘); return false; } } window.onload=GetRTime; </script> </html>
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原文地址:http://www.cnblogs.com/719907411hl/p/4860930.html