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@ 2020-09-12T00:33:08Z

<?php

$dt = new DateTime('2018-10-28 02:00:00', new DateTimeZone('Europe/Prague')); //Transition local time 3:00 to 2:00
$d = $dt->format('Y-m-d H:i:s P T');
$time = $dt->format('U');
$dt2 = new DateTime('@'.$time);
$d2 = $dt2->format('Y-m-d H:i:s P T');
$tz = $dt->getTimezone();
$e = $tz->getTransitions($time, $time);
$dt3 = clone $dt;
$date1 = $dt3->setTimestamp($time - 1);
$dt3 = clone $dt;
$date2 = $dt3->setTimestamp($time);
$dt3 = clone $dt;
$date3 = $dt3->setTimestamp($time + 3600 - 1);
$dt3 = clone $dt;
$date4 = $dt3->setTimestamp($time + 3600);
$dt3 = clone $dt;
$date5 = $dt3->setTimestamp($time + 3600*2 - 1);
$dt3 = clone $dt;

var_dump($date1->format(DateTime::ATOM));
var_dump($date2->format(DateTime::ATOM));
var_dump($date3->format(DateTime::ATOM));
var_dump($date4->format(DateTime::ATOM));
var_dump($date5->format(DateTime::ATOM));
var_dump('Europe/Prague '.$d, 'UTC '.$d2, $e);

Output for git.master, git.master_jit, rfc.property-hooks: string(25) "2018-10-28T02:59:59+02:00" string(25) "2018-10-28T02:00:00+01:00" string(25) "2018-10-28T02:59:59+01:00" string(25) "2018-10-28T03:00:00+01:00" string(25) "2018-10-28T03:59:59+01:00" string(44) "Europe/Prague 2018-10-28 02:00:00 +01:00 CET" string(39) "UTC 2018-10-28 01:00:00 +00:00 GMT+0000" array(2) { [0]=> array(5) { ["ts"]=> int(1540688400) ["time"]=> string(25) "2018-10-28T01:00:00+00:00" ["offset"]=> int(3600) ["isdst"]=> bool(false) ["abbr"]=> string(3) "CET" } [1]=> array(5) { ["ts"]=> int(1540688400) ["time"]=> string(25) "2018-10-28T01:00:00+00:00" ["offset"]=> int(3600) ["isdst"]=> bool(false) ["abbr"]=> string(3) "CET" } }

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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