mysql 第几周时间戳_php时间戳函数实现计算第几周,以及当天所在周的具体日期范围...

<html>

function showdate(){

c = new Date(2008,1,29);//输入开学的日期.注意,月份是从0-11;

comper=c.getTime();//以2008年2月29日作为上半学期结束。然后记录新的开学日期

var now= new Date();//获取当前时间

var d_now=now.getTime();//获取当前时间秒数

if (d_now > comper)

{d = new Date(2008,2,3);}

else d = new Date(2007,8,3);//输入开学的日期.注意,月份是从0-11;

d_start=d.getTime();//获取时间秒数，具体见手册

//document.write(d_start);

var now= new Date();//获取当前时间

var d_now=now.getTime();//获取当前时间秒数

//document.write(d_now);

var Week_num =(d_now-d_start)/604800000;//3600,000毫秒*24*7=604800000

if((d_now-d_start)%604800000)

{ Week_num = Week_num+1;

}

else

{

}

Week_num= Math.floor(Week_num);

document.write("</b><font color=red> 第" + Week_num + "周</font>");

//return(Week_num);

}

</script>

//计算今天是开学第几周

function Show_week(){

$now_time=time();//获取今天的时间戳

$compar = 1204214400;//hour,minute,second month,day,year,is_dst

//上半学期的结束时间

if($now_time>$compar)

{

$start_time = 1204473600;//时间戳，秒数2008,3,3);

}//下学期时间

else

{

$start_time = 1188748800;//2007.9.3

}//上学期开学时间

$Week_num =($now_time-$start_time)/604800;//3600,000毫秒*24*7=604800000

//echo $start_time;

if(($now_time-$start_time)%604800)

{ $Week_num = $Week_num+1;

}

else

{

}

$Week_num = floor($Week_num);

return($Week_num);

}

//计算当天所在周的范围

function Week_date(){//此处考虑到放假没有人使用，所以没有考虑跨年的日期改变

$now=getdate();//获取当前时间组

$Week_day=$now[weekday];//日

$Now_Time=time();

//echo $Now_Time;

//echo $Week_day;

switch($Week_day){ case Monday: // echo "1"; $Last_time=$Now_Time; $Next_time=$Now_Time+(6*24*60*60); // 6 days; 24 hours; 60 mins; 60secs 以后依次类推 break; case Tuesday: echo "2"; $Last_time=$Now_Time-(1*24*60*60); $Next_time=$Now_Time+(5*24*60*60); break; case Wednesday: // echo "3"; $Last_time=$Now_Time1-(2*24*60*60); $Next_time=$Now_Time+(4*24*60*60); break; case Thursday: // echo "4"; $Last_time=$Now_Time-(3*24*60*60); $Next_time=$Now_Time+(3*24*60*60); break; case Friday: // echo "5"; $Last_time=$Now_Time-(4*24*60*60); $Next_time=$Now_Time+(2*24*60*60); break; case Saturday: //echo "6"; $Last_time=$Now_Time-(5*24*60*60); $Next_time=$Now_Time+(1*24*60*60); break; case Sunday ; //echo "7"; $Last_time=$Now_Time-(6*24*60*60); $Next_time=$Now_Time; break;

}

//echo $Last_time;

//echo $Next_time;$Last_time1=date('Y年m月d日', $Last_time);

$Next_time1=date('Y年m月d日', $Next_time) ;

$week_rs = "$Last_time1 ～ $Next_time1";

return($week_rs);

}

</html>

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