mysql取今天，明天，工作日，周末，本周，下周，下月数据
if ($date != '') {switch($date){//date_add 加 date_sub 减case '今天': $where .= " AND FROM_UNIXTIME(starttimefrom,'%Y-%m-%d') = curdate() "; break;case '明天': $where .= " AND FROM_UNIXTIME(starttimefrom,'%Y-%m-%d') = date_add(curdate(), interval 1 day)"; break;case '工作日': $where .= " AND dayofweek(FROM_UNIXTIME(starttimefrom)) not in (1,7) "; break; case '周末': $where .= " AND dayofweek(FROM_UNIXTIME(starttimefrom)) in (1,7) "; break; case '本周': $where .= " AND YEARWEEK(FROM_UNIXTIME(starttimefrom,'%Y-%m-%d')) = YEARWEEK(now())"; break; case '下周': $where .= " AND ( FROM_UNIXTIME(starttimefrom,'%Y-%m-%d')>=SUBDATE(CURDATE(),DATE_FORMAT(CURDATE(),'%w')-1) AND FROM_UNIXTIME(starttimefrom,'%Y-%m-%d')<=SUBDATE(CURDATE(),DATE_FORMAT(CURDATE(),'%w')-7) ) "; break; case '下月': $where .= " AND FROM_UNIXTIME(starttimefrom,'%Y-%m') = date_format(DATE_add(curdate(), INTERVAL 1 MONTH),'%Y-%m') "; break;default:}}?