Bug #77232 [Nab]: Wrong week of month for 2018-12-31

Edit report at https://bugs.php.net/bug.php?id=77232&edit=1 ID: 77232 Updated by: danack@php.net Reported by: uli dot staerk at dc1 dot com Summary: Wrong week of month for 2018-12-31 Status: Not a bug Type: Bug Package: Date/time related Operating System: Linux PHP Version: 7.0.32 Block user comment: N Private report: N New Comment: You probably want o/W From: http://php.net/manual/en/function.date.php Y A full numeric representation of a year, 4 digits o ISO-8601 week-numbering year. This has the same value as Y, except that if the ISO week number (W) belongs to the previous or next year, that year is used instead. (added in PHP 5.1.0) Previous Comments: ------------------------------------------------------------------------ [2018-12-03 11:48:16] uli dot staerk at dc1 dot com Meh! Think -> Report ------------------------------------------------------------------------ [2018-12-03 11:44:43] uli dot staerk at dc1 dot com Description: ------------ The output for date("Y/W") is not correct for 2018-12-31! Test script: --------------- php > echo date("Y/W", strtotime('2018-12-30')); 2018/52 php > echo date("Y/W", strtotime('2018-12-31')); 2018/01 php > echo date("Y/W", strtotime('2019-01-01')); 2019/01 Expected result: ---------------- php > echo date("Y/W", strtotime('2018-12-31')); 2019/01 Actual result: -------------- php > echo date("Y/W", strtotime('2018-12-31')); 2018/01 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=77232&edit=1