/**
 * @Author: 小破孩嫩
 * @Email: 3584685883@qq.com
 * @Time: 2021/6/9 10:21
 * @param $year
 * @Description：获取任意一年的每个月的开始和结束的时间戳
 */
public function getMonthBetweenTimestampByYear($year = ''){
    if(empty($year)){
        $year = date('Y',time());
    }
    $month = ['1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12'];
    foreach($month as $key => $val){
        $month_start = strtotime($year.'-'.$val);//指定月份月初时间戳
        $month_end   = mktime(23, 59, 59, $val+1, 00,$year);//指定月份月末时间戳
        $month_s_e[] = ['start' => $month_start, 'end' => $month_end];
    }
    return $month_s_e;
}