Example #1
0
function adddays($tm, $days)
{
    $mdays = array(1 => 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
    $time = $tm;
    if (isleapyear($time[0])) {
        $mdays[2] = 29;
    }
    if ($days > 0) {
        for ($i = 0; $i < $days; $i++) {
            if ($time[2] < $mdays[$time[1]]) {
                $time[2]++;
            } else {
                $time[2] = 1;
                $time[1]++;
                if ($time[1] > 12) {
                    $time[1] = 1;
                    $time[0]++;
                    if (isleapyear($time[0])) {
                        $mdays[2] = 29;
                    } else {
                        $mdays[2] = 28;
                    }
                }
            }
        }
    } else {
        for ($i = 0; $i < -$days; $i++) {
            if ($time[2] > 1) {
                $time[2]--;
            } else {
                $time[1]--;
                if ($time[1] < 1) {
                    $time[0]--;
                    if (isleapyear($time[0])) {
                        $mdays[2] = 29;
                    } else {
                        $mdays[2] = 28;
                    }
                    $time[1] = 12;
                }
                $time[2] = $mdays[$time[1]];
            }
        }
    }
    return $time;
}
/**
* Get the last month's day number
* @param {number} year
* @param {number} month
* @return {number}
*/
function getLastMonthDayNumber($year, $month)
{
    if ($month == 2 && isleapyear($year)) {
        return 29;
    }
    $mdays = array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
    return $mdays[$month - 1];
}
Example #3
0
 protected function getDatesByWeek($week, $year)
 {
     global $locale_info;
     $startweekday = 0;
     if ($locale_info["LOCALE_IFIRSTDAYOFWEEK"] > 0) {
         $startweekday = 7 - $locale_info["LOCALE_IFIRSTDAYOFWEEK"];
     }
     $L = isleapyear($year) ? 1 : 0;
     $months = array(31, 28 + $L, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
     $total_days = ($week - 1) * 7;
     $i = 0;
     $sum = 0;
     while ($sum <= $total_days) {
         $sum += $months[$i++];
     }
     $sum -= $months[$i - 1];
     $month = $i;
     $day = $total_days - $sum;
     $day_of_week = getdayofweek(array($year, $month, $day));
     if ($day_of_week == 0) {
         $day_of_week = 7;
     }
     $day = $day - ($day_of_week - 1) - $startweekday;
     $dates = array();
     $dates[0] = getYMDdate(mktime(0, 0, 0, $month, $day, $year));
     $dates[1] = getYMDdate(mktime(1, 1, 1, $month, $day + 6, $year));
     return $dates;
 }