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简便方法：
echo date(“Y”,time()); //年
echo date(“n”,time()); //月
echo date(“j”,time()); //日

参考：

//取得时间的年月日
function getyear($date)
{
$strtime = $date;
$strtimes = explode(” “,$strtime);
$timearray = explode(“-“,$strtimes[0]);
echo $year = $timearray[0];
echo $month = $timearray[1];
echo $day = $timearray[2];
}
//取得星期
echo date(“Y年m月d日l”,time());
$date = date(“Y年m月d日”,time());
switch(date(“w”,time())){
case 0:
$today = “星期日”;
break;
case 1:
$today = “星期一”;
break;
case 2:
$today = “星期二”;
break;
case 3:
$today = “星期三”;
break;
case 4:
$today = “星期四”;
break;
case 5:
$today = “星期五”;
break;
case 6:
$today = “星期六”;
break;
}
echo $date.”,”.$today;

参考URL：
http://php.net/manual/en/function.date.php
http://hi.baidu.com/yutiedun/item/fae04b08fc0ad0e235990298
http://wenwen.soso.com/z/q189945358.htm