Bug #74701 [Csd->Nab]: date("o", strtotime("2017-01-01")) returns "2016"

Edit report at https://bugs.php.net/bug.php?id=74701&edit=1 ID: 74701 Updated by: requinix@php.net Reported by: reinor2 at yandex dot ru Summary: date("o", strtotime("2017-01-01")) returns "2016" -Status: Closed +Status: Not a bug Type: Bug Package: Date/time related Operating System: Linux PHP Version: 7.0.19 Block user comment: N Private report: N Previous Comments: ------------------------------------------------------------------------ [2017-06-06 12:00:17] reinor2 at yandex dot ru Thanks, spam2! I need to be more attentive. ------------------------------------------------------------------------ [2017-06-06 11:51:22] spam2 at rhsoft dot net read the manual and use 'Y' when you mean 'Y' 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) php > echo date("W", strtotime("2017-01-01")); 52 ------------------------------------------------------------------------ [2017-06-06 11:45:19] reinor2 at yandex dot ru Description: ------------ PHP 7.0.18-0ubuntu0.16.04.1 (cli) ( NTS ) Test script: --------------- date_default_timezone_set("UTC"); echo date("o", strtotime("2017-01-01")); // or, the same // echo (new DateTime("2017-01-01"))->format("o"); Expected result: ---------------- 2017 Actual result: -------------- 2016 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=74701&edit=1