急！php如何获取当前页面运行的时间？

<script>
function CurentTime()
{
var now = new Date();

var year = nowgetFullYear(); //年
var month = nowgetMonth() + 1; //月
var day = nowgetDate(); //日

var hh = nowgetHours(); //时
var mm = nowgetMinutes(); //分
var ss = nowgetSeconds(); //秒

var clock = year + "-";

if(month < 10)
clock += "0";

clock += month + "-";

if(day < 10)
clock += "0";

clock += day + " ";

if(hh < 10)
clock += "0";

clock += hh + ":";
if (mm < 10) clock += '0';
clock += mm + ":";

if (ss < 10) clock += '0';
clock += ss;
return(clock);
}
documentwrite(CurentTime());
</script>

php动态显示时间，我们需要做的是获取到当前的时间戳，然后在通过innerHTML实时的显示到网页中，toLocaleString就是一个时间戳，按照一定格式显示，这里举个例子：
<table>
<tr bgcolor="#FFFFFF">
<td>当前时间：</td>
<td id="CurrentTime"></td>
<script type="text/javascript">
function changetime(){
var ary = Array("星期日","星期一","星期二","星期三","星期四","星期五","星期六");
var Timehtml = documentgetElementById('CurrentTime');
var date = new Date();
TimehtmlinnerHTML = ''+datetoLocaleString()+' '+ary[dategetDay()];
}
windowonload = function(){
changetime();
setInterval(changetime,1000);
}
</script>
</tr>
</table>

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