Question

以为有人会发布这个，但找不到任何东西。试图找出最优雅的方式来确定我们在任何特定时间的17周赛季中的哪一周。我的想法是增加自2014年9月4日开始周以来的周数。接下来的星期四是新一周的开始：

Week 1 - 2014-09-4
Week 2 - 2014-09-11
Week 3 - 2014-09-18

等等......

尝试创建一个简单的函数，我可以在PHP中调用它来获取它的周数。建议？

Answer 1

我不知道最短的方式，但在这种情况下我们可以使用DatePeriod：

$today = new DateTime(); // todays date
$begin_date = '2014-09-4'; // start of nfl
$begin = new DateTime($begin_date); // create a date time
$i = 1; // first week number
$end_date = clone $begin;
$end_date->modify('+17 weeks'); // create the ending week based on the first week of nfl + 17 weeks form that date
$interval = new DateInterval('P1W'); // interval 1 week
$range = new DatePeriod($begin, $interval, $end_date);
$dates = array();
$found = false;
foreach($range as $date) {
    if($date >= $today && !$found) { // loop each weeks, if we are inside that week, set it
        $found = true;
        $current_week = 'We are in Week ' . ($i - 1);
    }
    $dates['Week ' . $i] = $date->format('Y-m-d'); // normal week range filling
    $i++;
}

echo $current_week;

这应该产生：

我们在第4周

最后$dates应该看起来像（出于可视化目的）：

Array
(
    [Week 1] => 2014-09-04
    [Week 2] => 2014-09-11
    [Week 3] => 2014-09-18
    [Week 4] => 2014-09-25
    [Week 5] => 2014-10-02
    [Week 6] => 2014-10-09
    [Week 7] => 2014-10-16
    [Week 8] => 2014-10-23
    [Week 9] => 2014-10-30
    [Week 10] => 2014-11-06
    [Week 11] => 2014-11-13
    [Week 12] => 2014-11-20
    [Week 13] => 2014-11-27
    [Week 14] => 2014-12-04
    [Week 15] => 2014-12-11
    [Week 16] => 2014-12-18
    [Week 17] => 2014-12-25
)

通过PHP将周数添加到周开始日期，获得当前的NFL季节

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