php获取一个月对应的所有日期天数

<?php

//获取一个月的天数

public function getAllDatesOfMonth($year, $month) {

1. $dates = [];
2. $firstDayOfMonth = new\DateTime("{$year}-{$month}-01");
3. $lastDayOfMonth = new\DateTime("{$year}-{$month}-01");
4. $lastDayOfMonth->modify('last day of this month');
6. $interval = new\DateInterval('P1D');
7. $dateRange = new\DatePeriod($firstDayOfMonth, $interval, $lastDayOfMonth);
9. foreach ($dateRange as $date) {
10. $dates[] = $date->format('Y-m-d');
11. }
13. return$dates;

}

?>