format('t'); return $days; } //获取某年多少天 function getDaysOfYear($year) { $year = intval($year); if ($year % 400 == 0 || ($year % 4 == 0 && $year % 100 != 0)) { return 366; } return 365; } function getNextWeekDates($date,$day) { // 定义日期 $formats = [7 => 'sunday', 1 => 'monday', 2 => 'tuesday', 3 => 'wednesday', 4 => 'thursday', 5 => 'friday', 6 => 'saturday']; $nextWeekDate = date('Y-m-d', strtotime("next $formats[$day]", strtotime($date))); return $nextWeekDate; }