修改你网站的页脚 footer.php 或者其他能支持 PHP 代码的地方
<span id="timeDate"> 载入天数...</span>
<span id="times"> 载入时分秒...</span>
<script>
var now = new Date();
function createtime(){
var grt= new Date("02/14/2017 00:00:00");//此处修改你的建站时间或者网站上线时间
now.setTime(now.getTime()+250);
days = (now - grt ) / 1000 / 60 / 60 / 24;
dnum = Math.floor(days);
hours = (now - grt ) / 1000 / 60 / 60 - (24 * dnum);
hnum = Math.floor(hours);
if(String(hnum).length ==1 ){
hnum = "0" + hnum;
}
minutes = (now - grt ) / 1000 /60 - (24 * 60 * dnum) - (60 * hnum);
mnum = Math.floor(minutes);
if(String(mnum).length ==1 ){
mnum = "0" + mnum;
}
seconds = (now - grt ) / 1000 - (24 * 60 * 60 * dnum) - (60 * 60 * hnum) - (60 * mnum);
snum = Math.round(seconds);
if(String(snum).length ==1 ){
snum = "0" + snum;
}
document.getElementById("timeDate").innerHTML = " 本站安全运行 "+dnum+" 天";
document.getElementById("times").innerHTML = hnum + " 小时 " + mnum + " 分 " + snum + " 秒";
}
setInterval("createtime()",250);
</script>
自动显示网站运行时间。