php 时间戳 总结 今日，昨日，上周，本周，最近三个月，上季，本季，去年，最近七天，今年，最近三十天

if($time=="今日"){
            $beginToday=mktime(0,0,0,date('m'),date('d'),date('Y'));
            $endToday=mktime(0,0,0,date('m'),date('d')+1,date('Y'))-1;
            $begin = Date("Y-m-d",$beginToday);
            $end = Date("Y-m-d",$endToday);
        }else if($time=="昨日"){
            $beginYesterday=mktime(0,0,0,date('m'),date('d')-1,date('Y'));
            $endYesterday=mktime(0,0,0,date('m'),date('d'),date('Y'))-1;
            $begin = Date("Y-m-d",$beginYesterday);
            $end = Date("Y-m-d",$endYesterday);
        }else if($time=="上周"){
            $beginLastweek=mktime(0,0,0,date('m'),date('d')-date('w')+1-7,date('Y'));
            $endLastweek=mktime(23,59,59,date('m'),date('d')-date('w')+7-7,date('Y'));
            $begin = Date("Y-m-d",$beginLastweek);
            $end = Date("Y-m-d",$endLastweek);
        }else if($time=="本周"){
            //判断当天是星期几，0表星期天，1表星期一，6表星期六
            $w_day=date("w",time());
            //php处理当前星期时间点上，根据当天是否为星期一区别对待
            if($w_day=='1'){
                $cflag = '+0';
                $lflag = '-1';
            }else {
                $cflag = '-1';
                $lflag = '-2';
            }
            //本周一零点的时间戳
            $frist = strtotime(date('Y-m-d',strtotime("$cflag week Monday", time())));
            $begin = Date("Y-m-d",$frist); 
            $end = Date("Y-m-d",time()); 
        }else if($time=="本月"){
            $beginThismonth=mktime(0,0,0,date('m'),1,date('Y'));
            $endThismonth=mktime(23,59,59,date('m'),date('t'),date('Y'));
            $begin = Date("Y-m-d",$beginThismonth);
            $end = Date("Y-m-d",$endThismonth);
        }else if($time=="上月"){
            $beginLastmonth=mktime(0,0,0,date('m')-1,1,date('Y'));
            $endLastmonth=mktime(23,59,59,date('m')-1,date('t'),date('Y'));
            $begin = Date("Y-m-d",$beginLastmonth);
            $end = Date("Y-m-d",$endLastmonth);
        }else if($time=="最近三个月"){
            $beginThreemonth=mktime(23,59,59,date('m'),date('t'),date('Y'));
            $endThreemonth=mktime(23,59,59,date('m')-3,date('t'),date('Y'));
            $begin = Date("Y-m-d",$beginThreemonth);
            $end = Date("Y-m-d",$endThreemonth);
        }else if($time=="本季"){
            $begin = date('Y-m-d', mktime(0, 0, 0,$season*3-3+1,1,date('Y')));
            $end = date('Y-m-d', mktime(23,59,59,$season*3,date('t',mktime(0, 0 , 0,$season*3,1,date("Y"))),date('Y')));
        }else if($time=="上季"){
            $season = ceil((date('n'))/3);//当月是第几季度
            $begin = date('Y-m-d', mktime(0, 0, 0,$season*3-3-3+1,1,date('Y')));
            $end = date('Y-m-d', mktime(23,59,59,$season*3-3,date('t',mktime(0,0,0,$season*3,1,date("Y"))),date('Y')));
        }else if($time=="今年"){
            $begin = date('Y',time()). '-' ."01-01";
            $end = date('Y',time()). '-' ."12-31";
        }else if($time=="去年"){
            $d=strtotime('-1 years');
            $begin = date('Y',$d)."-01-01";
            $end = date('Y',$d)."-12-31";
        }else if($time=="最近七天"){
            $begin = date('Y-m-d', strtotime('-7 days'));
            $end = date('Y-m-d',time());
        }else if($time=="最近三十天"){
            $begin = date('Y-m-d', strtotime('-30 days'));
            $end = date('Y-m-d',time());
        }