>2019-03-01 至 2019-04-04 删除两个日期之间的星期六和星期日并计算总天数
来自Carbon Docs
CarbonPeriod::macro('countWeekdays', function () {
return $this->filter('isWeekday')->count();
});
echo CarbonPeriod::create('2019-03-01', '2019-04-04')->countWeekdays();