PHP 日期分段

/**
 * 获取日期之间的差数
 */

function prDates($start,$end,$type='+1 day'){ // 两个日期之间的所有日期
    $dt_start = strtotime($start);
    $dt_end = strtotime($end);
    $arr = [];
    while ($dt_start<=$dt_end){
        $arr[]= date('Y-m-d',$dt_start);
        $dt_start = strtotime($type,$dt_start);
    }
    return $arr;
}

/**
 * 获得开始日期和结束日期 周时段
 * @param $start_date
 * @param $end_date
 * @return array
 */
function prWeek($start_date,$end_date)
{
    if(!$start_date || !$end_date) {
        return [];
    }

    $temp = $start_date;
    $week_arr = [];
    $end_time = strtotime($end_date);

    do{

        $start_time = strtotime($start_date);
        $next_day = date("Y-m-d",strtotime("+1 day",$start_time));

        if (date('w',$start_time) === '0') {
            $week_arr[] = $temp . '~' . $start_date;
            $temp = $next_day;
        }

        $start_date = $next_day;

    }while( $start_time < $end_time);

    if (date('w',$end_time) !== '0') {
        $week_arr[] = $temp . '~' . $end_date;
    }

    return $week_arr;
}

/**
 *  获取月时段
 *
 * @param string $start_date
 * @param string $end_date
 * @return array
 */
function prMonths($start_date='',$end_date='')
{
    if(!$start_date || !$end_date) {
        return [];
    }

    $temp_date = $start_date;
    $month_arr = [];
    $end_time = strtotime($end_date);

    do {

        $start_date = date('Y-m-d', strtotime("$start_date +1 month -1 day"));
        $start_time = strtotime($start_date);
        if($end_time<$start_time) {
            $month_arr[] = $temp_date . '~' . $end_date;
            break;
        } else {
            $month_arr[] = $temp_date . '~' . $start_date;
        }
        $temp_date = $start_date = date('Y-m-d', strtotime("+1 day",$start_time));

    }while($start_time < $end_time);

    return $month_arr;
}

/**
 *  获取季度时段
 *
 * @param string $start_date
 * @param string $end_date
 * @return array
 */
function prQuarter($start_date='',$end_date='')
{
    $end_time = strtotime($end_date);
    $temp_date = $start_date;
    $quarter_arr = [];
    while(($start_time = strtotime($start_date))<$end_time) {

        $season = ceil((date('n',$start_time))/3);
        $start_quarter = date('Y-m-d', mktime(0, 0, 0,$season*3-3+1,1,date('Y',$start_time)));

        $end_quarter = date('Y-m-d', mktime(23,59,59,$season*3,date('t',mktime(0, 0 , 0,$season*3,1,date("Y",$start_time))),date('Y',$start_time)));
        $end_quarter_time = strtotime($end_quarter);
        $start_date = date('Y-m-d', strtotime("+1 day",$end_quarter_time));


        if($end_quarter_time>$end_time) {
            $quarter_arr[] = $start_quarter.'~'.$end_date;
            break;
        } elseif(strtotime($start_quarter)<strtotime($temp_date)){
            $quarter_arr[] = $temp_date.'~'.$end_quarter;
        } else {
            $quarter_arr[] = $start_quarter.'~'.$end_quarter;
        }
    }

    return $quarter_arr;
}

/**
 *  获取年时段
 *
 * @param string $start_date
 * @param string $end_date
 * @return array
 */
function prYears($start_date='',$end_date='')
{
    if(!$start_date || !$end_date) {
        return [];
    }
    $temp_date = $start_date;
    $year_arr = [];
    $end_time = strtotime($end_date);
    while(($start_time=strtotime($start_date))<$end_time) {

        $start_date = date('Y-12-01',$start_time);
        $start_date = date('Y-m-d', strtotime("$start_date +1 month -1 day"));
        if($end_time<$start_time) {
            $year_arr[] = $temp_date . '~' . $end_date;
            break;
        } else {
            $year_arr[] = $temp_date . '~' . $start_date;
        }
        $temp_date = $start_date = date('Y-m-d', strtotime("$start_date +1 day"));
    }
    return $year_arr;
}