纪念日倒计时程序

<?
    //功能：纪念日倒计时
    //时间：2015/05/19
    $now = strtotime("now");//获取当前时间
    $endtime = strtotime("2015-06-13 13:00:00");//设定考试时间
    
    $second = $endtime - $now;//考试时间与现在时间的差值
    $year = floor($second/3600/24/365);//从差值中算出有多少年
    
    $temp = $second - $year * 3600 * 24 * 365;
    $month = floor($temp/3600/24/30);//算出月
    
    $temp = $temp - $month * 3600 * 24 * 30;
    $day = floor($temp /3600/24);//算出天
    
    $temp = $temp - $day * 3600 * 24;
    $hour = floor($temp/3600);//算出小时
    
    $temp = $temp - $hour * 3600;
    $minute = floor($temp/60);//算出分钟
    
    
    $second1 = $temp - $minute * 60;//剩下的就是秒了
    echo "<font size = 40px color = red>";
    echo "距离六级考试还有{$year}年{$month}月{$day}天{$hour}小时{$minute}分钟{$second1}秒";
    echo "</font>";