[PHP知识库]php获取近7天、近30天、近1个月、近1年开始日期和结束日期列表

  //当前日期前30天日期列表
    public function getData30Days(){
        $days=[];
        for ($i=0; $i <=30; $i++) { 
            $days[$i]=date("Y-m-d",strtotime('-'.$i.'day'));
        }
        return $days;
    }

 
  //获取最近七天所有日期

    function get_weeks($time = '', $format='Y-m-d')
    {
        $time = $time != '' ? $time : time();
        //组合数据
        $date = [];
        for ($i=1; $i<=7; $i++) {
            $date[$i] = date($format, strtotime('+' . $i-7 .' days', $time));
        }
        return $date;
    }

//获取本周所有日期

function get_week($time = '', $format='Y-m-d'){
    $time = $time != '' ? $time : time();
    //获取当前周几
    $week = date('w', $time);
    $date = [];
    for ($i=1; $i<=7; $i++){
        $date[$i] = date($format ,strtotime( '+' . $i-$week .' days', $time));
    }
    return $date;
}
//本周所有日期开始和结束
function get_week($time = '', $format='Y-m-d'){
    $time = $time != '' ? $time : time();
    //获取当前周几
    $week = date('w', $time);
    $date = [];
    for ($i=1; $i<=7; $i++){
        $date[$i]['start_time'] = date($format ,strtotime( '+' . $i-$week .' days', $time));
        $date[$i]['end_time'] = date($format ,strtotime( '+' . $i-$week+1 .' days', $time));
    }
    return $date;
}

//本月所有日期
    function get_day_num($time = '', $format='Y-m-d'){
        $time = $time != '' ? $time : time();
        //获取当前周几
        $week = date('d', $time);
        $date = [];
        for ($i=1; $i<=date('t'); $i++){
            $date[$i-1] = date($format ,strtotime( '+' . $i-$week .' days', $time));
        }
        return $date;
    }
//本月所有日期开始和结束
function get_day($time = '', $format='Y-m-d'){
    $time = $time != '' ? $time : time();
    //获取当前周几
    $week = date('d', $time);
    $date = [];
    for ($i=1; $i<=date('t'); $i++){
        $date[$i]['start_time'] = date($format ,strtotime( '+' . $i-$week .' days', $time));
        $date[$i]['end_time'] = date($format ,strtotime( '+' . $i-$week+1 .' days', $time));
    }
    return $date;
}

 //获取当前月份往前的12个月份开始和结束时间
    public function getDateMouth(){
        $currentTime = time();
        $cyear = floor(date("Y",$currentTime));
        $cMonth = floor(date("m",$currentTime));
        $dataArray = [];
        $num = 0;
        for ($i=0;$i<12;$i++){
            $array = [];
            $nMonth = $cMonth-$i;
            $cyear = $nMonth == 0 ? ($cyear-1) : $cyear;
            if($nMonth == 0){
                $nMonth = 12;
            }
            if($nMonth < 0){
                $nMonth = 12;
                $num++;
                $nMonth = $nMonth-$num;
            }
            $date = $cyear.'-'.$nMonth;
            $firstday = date("Y-m-01",strtotime($date));
            $lastday = date("Y-m-t",strtotime($date));
            $array[$date]["first"] = $firstday;
            $array[$date]["last"] = $lastday;
            $dataArray[] = $array;
        }
        $newArr=[];
        for ($i = count($dataArray)-1;$i>=0;$i--) { 
            array_push($newArr,$dataArray[$i]);
        }
        //sort($dataArray);
        return $newArr;
    }
//本年所有月份开始和结束
function get_month(){
    $year = date('Y');
    $yeararr = [];
    $month = [];
    for ($i=1; $i <=12 ; $i++) {
        $yeararr[$i] = $year.'-'.$i;
    }
    foreach ($yeararr as $key => $value) {
        $timestamp = strtotime( $value );
        $start_time = date( 'Y-m-1 00:00:00', $timestamp );
        $mdays = date( 't', $timestamp );
        $end_time = date( 'Y-m-' . $mdays . ' 23:59:59', $timestamp );

        $month[$key]['start_time'] = $start_time;
        $month[$key]['end_time'] = $end_time;

    }
    return $month;
}
    //换成汉字
  public function get_week($date){
        $date_str=date('Y-m-d',strtotime($date));
        
        $arr=explode("-", $date_str);
        
        $year=$arr[0];
        
        $month=sprintf('%02d',$arr[1]);
        
        $day=sprintf('%02d',$arr[2]);
        
        $hour = $minute = $second = 0;
        
        $strap = mktime($hour,$minute,$second,$month,$day,$year);
        
        $number_wk=date("w",$strap);
        
        $weekArr=array("周日","周一","周二","周三","周四","周五","周六");
        
        return $weekArr[$number_wk];
        
        }