날짜 출력

$cday = 1;$sel_mon = sprintf("%02d",$month);$query = "select * from $write_table where left(wr_1,6) <= '".$year.$sel_mon."'  and left(wr_2,6) >= '".$year.$sel_mon."'  order by wr_id asc";$result = sql_query($query);$j=0; // layer id while ($row = mysql_fetch_array($result)) {  if( substr($row['wr_1'],0,6) <  $year.$sel_mon ) {	 $start_day =1;	 $start_day= (int)$start_day;  } else {	 $start_day = substr($row['wr_1'],6,2);     $start_day= (int)$start_day;  }   if( substr($row['wr_2'],0,6) >  $year.$sel_mon ) {	 $end_day = $lastday[$month];	 $end_day= (int)$end_day;  } else {	 $end_day = substr($row['wr_2'],6,2);	 $end_day= (int)$end_day;  }