Question

我需要得到1969年开始的实际周数：

$dateTime = new DateTime;
$now = '2017-01-01';

// 
// $week = date('W', strtotime($now . ' +2 days'));
// I will get the week number between 01-53 and this is not what I want.
// I need to set the starting year and get the week number since 1969 to get the expected results.
// How to get the value 2506 from this $week variable?
//

$dateTime->setISODate('1969', 2506, -1);
$start_by = $dateTime->format('Y-m-d');

// output: 2016-12-31

如您所见，'2016-12-31'是我一周开始的日期时间。

提前谢谢！

Answer 1

似乎很简单，

 <?php 
    $date1 = new DateTime();
    $date2 = new DateTime("1969-01-21");
    $interval = $date1->diff($date2);

    echo ceil($interval->days / 7);
 ?>

PHP：从1969年开始获取周数

1 个答案: