<?php
   date_default_timezone_set("UTC");
 function GetTheMonth($date){//獲取指定日期所在月的第一天和最後一天
  $firstday = date("Y-m-01",strtotime($date));
  $lastday = date("Y-m-d",strtotime("$firstday +1 month -1 day"));
  return array($firstday,$lastday);
 }
 function GetPurMonth($date){//獲取指定日期上個月的第一天和最後一天
  $time
 
=strtotime($date);
  $firstday=date('Y-m-01',strtotime(date('Y',$time).'-'.(date('m',$time)-1).'-01'));
  $lastday=date('Y-m-d',strtotime("$firstday +1 month -1 day"));
  return array($firstday,$lastday);
 }
 function GetNextMonth($date){//獲取指定日期下個月的第一天和最後一天

  $arr = getdate();
  if($arr['mon'] == 12){
   $year
 
 = $arr['year'] +1;
   $month = $arr['mon'] -11;
   $day = $arr['mday'];
   if($day < 10){
    $mday = '0'.$day;
   }else {
    $mday = $day;
   }
   $firstday = $year.'-0'.$month.'-01';
   $lastday = $year.'-0'.$month.'-'.$mday;
  }else{
   $time=strtotime($date);
   $firstday=date('Y-m-01',strtotime(date('Y'
 
,$time).'-'.(date('m',$time)+1).'-01'));
   $lastday=date('Y-m-d',strtotime("$firstday +1 month -1 day"));
  }
   return array($firstday,$lastday);
 }
?>


function GetMonth($sign="1")  

{  

    //得到系統的年月  

    $tmp_date=date("Ym");  

    //切割出年份  

    $tmp_year=substr($tmp_date,0,4);  

    //切割出月份  

    $tmp_mon =substr($tmp_date,4,2);  

    $tmp_nextmonth=mktime(0,0,0,$tmp_mon+1,1,$tmp_year);  

    $tmp_forwardmonth=mktime(0,0,0,$tmp_mon-1,1,$tmp_year);  

    if($sign==0){  

        //得到當前月的下一個月   

        return $fm_next_month=date("Ym",$tmp_nextmonth);          

    }else{  

        //得到當前月的上一個月   

        return $fm_forward_month=date("Ym",$tmp_forwardmonth);           

    }  

}