Question

获取此格式的周数：

$weeknumber = date('W', strtotime('10-02-2015'));

如何从本周编号开始日期。

Answer 1

使用此

您需要像strtotime('10-02-2015'))

一样进行更改

$date_string = "2012-10-18";
$weeknumber =  date("W", strtotime($date_string));

//get the date from week number

isodate

$gendate = new DateTime();
$gendate->setISODate(2013,$weeknumber ,4); //year , week num , day
echo $gendate->format('d-m-Y'); //"prints"  26-12-2013

Answer 2

你可以用这个

  echo $weeknumber = date('W', strtotime('18-10-2012'));
  $gendate = new DateTime();
  $gendate->setISODate(2015,$weeknumber,4); //year , week num , day
  echo $gendate->format('d-m-Y'); //"prints"

Answer 3

请勿将strtotime()和date()函数与DateTime类混合使用。它可以在没有它们的情况下完成，只有DateTime，例如：

$date = new DateTime('10-02-2015');
$date->setISODate($date->format('o'), $date->format('W'));
echo $date->format('d-m-Y');

demo

如何从周数开始日期

3 个答案: