1 /**
2 * 日期-獲取當月最後一天
3 * @return int
4 */
5 public function get_lastday() {
6 if($this->month==2) {
7 $lastday = $this->is_leapyear($this->year) ? 29 : 28;
8 } elseif($this->month==4 || $this->month==6 || $this->month==9 || $this->month==11) {
9 $lastday = 30;
10 } else {
11 $lastday = 31;
12 }
13 return $lastday;
14 }
15
16
17
18 /**
19 * 日期-是否是閏年
20 * @return int
21 */
22 public function is_leapyear($year) {
23 return date('L', $year);
24 }