问在特定日期之间打开和关闭页面

EN

$lastRecDay = "2013-01-11"; // this will be coming from ur db


// create a date object
$date = new DateTime($lastRecDay);
//add 20 days to it
$date->add(new DateInterval('P10D')); // ur date is 20 from last day

//its 20 days+ since the posting
if( $date->format('U') <= strtotime('now'))
{
 // your code re-open goes here
}

Open date
Display days
Interval days
End date

create a page
enter the first open date
enter the days to be displayed
enter the days between closing and re-opening (interval)
enter the end date

if (today < enddate ) {
  if (today >= opendate) and (today <= opendate + displaydays)
    show
  else if (today > opendate + displaydays)
    opendate = today + interval
}