为什么下面的代码返回 11 月的第二个星期五，但返回 12 月的第一个星期五 - Why does the following code return the second friday in November but first friday in December?

Why does the following code return the second friday in November but first friday in December?

抱歉，如果这是重复的。为什么以下代码会出错？它返回 12 月 6 日，目前是 12 月的第一个星期五(询问 2013 年 10 月 8 日(

$thisMonth = date('m');
$year = date("Y");
$thismonthName = date("M.", mktime(0, 0, 0, $thisMonth,0,$year));
if ($thisMonth < 12) {
$nextmonthName = date("M.", mktime(0, 0, 0, $nextMonth,1,$year));
} else {
$nextMonth = 1;
$nextmonthName = date("M.", mktime(0, 0, 0, $nextMonth,1,$nextYear));
}
$thisDate = date('M j', strtotime($nextmonthName . $year . "first friday"));
print ("second friday next month is " . $thisDate);

但将其修改为仅在下个月，就像这样，

$thisMonth = date('m');
$year = date("Y");
$thismonthName = date("M.", mktime(0, 0, 0, $thisMonth,0,$year));
if ($thisMonth < 12) {
$nextmonthName = date("M.", mktime(0, 0, 0, $nextMonth,0,$year));
} else {
$nextMonth = 1;
$nextmonthName = date("M.", mktime(0, 0, 0, $nextMonth,0,$nextYear));
}
$thisDate = date('M j', strtotime($nextmonthName . $year . "first friday"));
print ("second friday next month is " . $thisDate);

11月

8日返回，11月的第二个星期五。为什么？

你真的应该调查DateTime、DateInterval、DatePeriod类。他们让这种事情变得微不足道。

$date = new DateTime();
$interval = DateInterval::createFromDateString('second friday of next month');
$date->add($interval);
echo 'Second Friday next month is ' . $date->format('Y-m-d');

或者获得未来 3 个月的第二个星期五：

$date = new DateTime();
$recurrence_count = 3;
$interval = DateInterval::createFromDateString('second friday of next month');
$period = new DatePeriod($date, $interval, $recurrence_count);
foreach ($period as $dt) {
    echo $dt->format('Y-m-d');
}

你的代码太复杂了。

$secondNextFriday = new DateTime('first friday of +2 months'); // First friday in december