Bug->Doc #63597 [Opn->Asn]: easter_date ignores PHP's timezone and uses the TZ env variable

Edit report at https://bugs.php.net/bug.php?id=63597&edit=1 ID: 63597 Updated by: aharvey@php.net Reported by: anon at anon dot anon -Summary: easter_date is fucking stupid +Summary: easter_date ignores PHP's timezone and uses the TZ env variable -Status: Open +Status: Assigned -Type: Bug +Type: Documentation Problem -Package: Date/time related +Package: Documentation problem PHP Version: 5.4.9 -Assigned To: +Assigned To: aharvey Block user comment: N Private report: N New Comment: Thanks for your well reasoned, not at all abusive bug report, anonymous. Anyway, there is an actual issue here that isn't documented, which is that easter_date() uses the libc date handling functions, which means it's beholden to the TZ environment variable and not PHP's default time zone. There's a pretty simple workaround using easter_days() and DateTime::add(), so I'll get a note into the documentation to demonstrate that. Previous Comments: ------------------------------------------------------------------------ [2012-11-25 15:13:17] anon at anon dot anon Description: ------------ The easter_date function magics a random timezone out of the air, rendering it worthless. Test script: --------------- <?php date_default_timezone_set('UTC'); for ($year = 1970; $year <= 2037; $year++) { echo gmdate('Y-M-d H:i:s', easter_date($year)) . "\n"; } Actual result: -------------- 1970-Mar-29 00:00:00 1971-Apr-10 23:00:00 1972-Apr-01 23:00:00 1973-Apr-21 23:00:00 1974-Apr-13 23:00:00 1975-Mar-30 00:00:00 1976-Apr-17 23:00:00 1977-Apr-09 23:00:00 1978-Mar-26 00:00:00 1979-Apr-14 23:00:00 1980-Apr-05 23:00:00 1981-Apr-18 23:00:00 1982-Apr-10 23:00:00 1983-Apr-02 23:00:00 1984-Apr-21 23:00:00 1985-Apr-06 23:00:00 1986-Mar-30 00:00:00 1987-Apr-18 23:00:00 1988-Apr-02 23:00:00 1989-Mar-26 00:00:00 1990-Apr-14 23:00:00 1991-Mar-31 00:00:00 1992-Apr-18 23:00:00 1993-Apr-10 23:00:00 1994-Apr-02 23:00:00 1995-Apr-15 23:00:00 1996-Apr-06 23:00:00 1997-Mar-30 00:00:00 1998-Apr-11 23:00:00 1999-Apr-03 23:00:00 2000-Apr-22 23:00:00 2001-Apr-14 23:00:00 2002-Mar-31 00:00:00 2003-Apr-19 23:00:00 2004-Apr-10 23:00:00 2005-Mar-27 00:00:00 2006-Apr-15 23:00:00 2007-Apr-07 23:00:00 2008-Mar-23 00:00:00 2009-Apr-11 23:00:00 2010-Apr-03 23:00:00 2011-Apr-23 23:00:00 2012-Apr-07 23:00:00 2013-Mar-31 00:00:00 2014-Apr-19 23:00:00 2015-Apr-04 23:00:00 2016-Mar-27 00:00:00 2017-Apr-15 23:00:00 2018-Mar-31 23:00:00 2019-Apr-20 23:00:00 2020-Apr-11 23:00:00 2021-Apr-03 23:00:00 2022-Apr-16 23:00:00 2023-Apr-08 23:00:00 2024-Mar-31 00:00:00 2025-Apr-19 23:00:00 2026-Apr-04 23:00:00 2027-Mar-28 00:00:00 2028-Apr-15 23:00:00 2029-Mar-31 23:00:00 2030-Apr-20 23:00:00 2031-Apr-12 23:00:00 2032-Mar-28 00:00:00 2033-Apr-16 23:00:00 2034-Apr-08 23:00:00 2035-Mar-25 00:00:00 2036-Apr-12 23:00:00 2037-Apr-04 23:00:00 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=63597&edit=1