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@ 2017-03-28T10:47:05Z

<?php

date_default_timezone_set('Europe/Madrid');

$start = new DateTime('2017-03-26 01:59:00');
$increments = array(
    '+60 minutes'   => '2017-03-26 03:59:00',
    '+61 minutes'   => '2017-03-26 04:00:00',
);

echo 'Start:        ' . $start->format('r') . PHP_EOL;
$local = $start->getTimezone();
$utc = new DateTimeZone('UTC');
foreach ($increments as $increment => $expected_string) {
    echo '>>> ' . $increment . PHP_EOL;

    $expected_end = new DateTime($expected_string);
    $actual_end = clone $start;
    $actual_end->setTimezone($utc);
    $actual_end->modify($increment);
    $actual_end->setTimezone($local);

    echo 'Expected end: ' . $expected_end->format('r') . PHP_EOL;
    echo 'Actual end:   ' . $actual_end->format('r') . PHP_EOL;
    echo ($expected_end->format('c')===$actual_end->format('c')  ? 'OK' : 'ERROR') . PHP_EOL;
    echo PHP_EOL;
}

Output for git.master, git.master_jit, rfc.property-hooks: Start: Sun, 26 Mar 2017 01:59:00 +0100 >>> +60 minutes Expected end: Sun, 26 Mar 2017 03:59:00 +0200 Actual end: Sun, 26 Mar 2017 03:59:00 +0200 OK >>> +61 minutes Expected end: Sun, 26 Mar 2017 04:00:00 +0200 Actual end: Sun, 26 Mar 2017 04:00:00 +0200 OK

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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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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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