PHP获取今日本月上月

//今日
$today=mktime(0,0,0,date('m'),date('d'),date('Y')); 


//本月月初时间戳
$month_start=mktime(0, 0 , 0,date("m"),1,date("Y"));

//上月月初时间戳、上月月未时间戳
$lastmonth_start=mktime(0,0,0,date('m')-1,1,date('Y'));
$lastmonth_end=mktime(0,0,0,date('m'),1,date('Y'))-24*3600;


//PHP获取今日开始时间戳和结束时间戳
$beginToday=mktime(0,0,0,date('m'),date('d'),date('Y'));
$endToday=mktime(0,0,0,date('m'),date('d')+1,date('Y'))-1;


//php获取昨日起始时间戳和结束时间戳
$beginYesterday=mktime(0,0,0,date('m'),date('d')-1,date('Y'));
$endYesterday=mktime(0,0,0,date('m'),date('d'),date('Y'))-1;

//php获取上周起始时间戳和结束时间戳
$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'));

//php获取本月起始时间戳和结束时间戳
$beginThismonth=mktime(0,0,0,date('m'),1,date('Y'));
$endThismonth=mktime(23,59,59,date('m'),date('t'),date('Y'));

<?php  
echo "今天:".date("Y-m-d")."<br>";       
echo "昨天:".date("Y-m-d",strtotime("-1 day")), "<br>";       
echo "明天:".date("Y-m-d",strtotime("+1 day")). "<br>";    
echo "一周后:".date("Y-m-d",strtotime("+1 week")). "<br>";       
echo "一周零两天四小时两秒后:".date("Y-m-d G:H:s",strtotime("+1 week 2 days 4 hours 2 seconds")). "<br>";       
echo "下个星期四:".date("Y-m-d",strtotime("next Thursday")). "<br>";       
echo "上个周一:".date("Y-m-d",strtotime("last Monday"))."<br>";       
echo "一个月前:".date("Y-m-d",strtotime("last month"))."<br>";       
echo "一个月后:".date("Y-m-d",strtotime("+1 month"))."<br>";       
echo "十年后:".date("Y-m-d",strtotime("+10 year"))."<br>";      
?>

< ?php
/*
*按今天，本周，本月，本季度，本年，全部查询预约单数据
* $day 代表查询条件 $cid 代表 公司id
*返回array $data 查询条件 数组
*/
class ReserveModel extends BaseModel {
    public
    function find_createtime($day, $cid) {
        //查询当天数据
        if ($day == 1) {
            $today = strtotime(date('Y-m-d 00:00:00'));
            $data['cid'] = $cid;
            $data['createtime'] = array('egt', $today);
            return $data;
            //查询本周数据
        } else if ($day == 2) {
            $arr = array();
            $arr = getdate();
            $num = $arr['wday'];
            $start = time() - ($num - 1) * 24 * 60 * 60;
            $end = time() + (7 - $num) * 24 * 60 * 60;
            $data['cid'] = $cid;
            $data['createtime'] = array('between', array($start, $end));
            return $data;
            //查询本月数据
        } else if ($day == 3) {
            $start = strtotime(date('Y-m-01 00:00:00'));
            $end = strtotime(date('Y-m-d H:i:s'));
            $data['cid'] = $cid;
            $data['createtime'] = array('between', array($start, $end));
            return $data;
            //查询本季度数据
        } else if ($day == 4) {
            $month = date('m');
            if ($month == 1 || $month == 2 || $month == 3) {
                $start = strtotime(date('Y-01-01 00:00:00'));
                $end = strtotime(date("Y-03-31 23:59:59"));
            }
            elseif($month == 4 || $month == 5 || $month == 6) {
                $start = strtotime(date('Y-04-01 00:00:00'));
                $end = strtotime(date("Y-06-30 23:59:59"));
            }
            elseif($month == 7 || $month == 8 || $month == 9) {
                $start = strtotime(date('Y-07-01 00:00:00'));
                $end = strtotime(date("Y-09-30 23:59:59"));
            } else {
                $start = strtotime(date('Y-10-01 00:00:00'));
                $end = strtotime(date("Y-12-31 23:59:59"));
            }
            $data['cid'] = $cid;
            $data['createtime'] = array('between', array($start, $end));
            return $data;
            //查询本年度数据
        } else if ($day == 5) {
            $year = strtotime(date('Y-01-01 00:00:00'));
            $data['cid'] = $cid;
            $data['createtime'] = array('egt', $year);
            return $data;
            //全部数据
        } else {
            $data['cid'] = $cid;
            return $data;
        }
    }
}
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