小小子

class DateSvc
{
    //下月的第一天
    public static function getNextMonthFirstDay($separator = '')
    {
        return date('Y'.$separator.'m'.$separator.'01',strtotime("+1 month"));
    }
   
    //本月的最后一天
    public static function getThisMonthLastDay($separator = '')
    {
        return date('Y'.$separator.'m'.$separator.'t');
    }
   
    //今年的最后一天
    public static function getThisYearLastDay($separator = '')
    {
        return date('Y'.$separator.'12'.$separator.'31');
    }
   
    //明年的第一天
    public static function getNextYearFirstDay($separator = '')
    {
        return date('Y'.$separator.'01'.$separator.'01',strtotime("+1 year"));
    }
   
    //明天
    public static function getTomorrowByDay ($day,$seprator = '')
    {
        return date('Y'.$seprator.'m'.$seprator.'d',strtotime("$day +1 day"));
    }
   
    //下一小时
    public static function getNestHourByDay($day,$separator_day = '',$separator_hour = '',$separator_between = '')
    {
        //return date('YmdHis',strtotime("$day +1 hour"));
        return date('Y'.$separator_day.'m'.$separator_day.'d'.$separator_between.'H'.$separator_hour.'i'.$separator_hour.'s',strtotime("$day +1 hour"));
    }
}

echo DateSvc::getNextMonthFirstDay('-')."\n";
echo DateSvc::getThisMonthLastDay('-')."\n";
echo DateSvc::getThisYearLastDay('-')."\n";
echo DateSvc::getNextYearFirstDay('-')."\n";
echo DateSvc::getTomorrowByDay("20091231")."\n";
echo DateSvc::getNestHourByDay("20090228230000",'-',':',' ')."\n";