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@ 2014-06-26T10:44:12Z

<?php

    function addRollover($givenDate, $addtime) {
        $datetime = new DateTime($givenDate);
        $datetime->modify($addtime);

        if (in_array($datetime->format('l'), array('Sunday','Saturday')) || 17 < $datetime->format('G') || (17 === $datetime->format('G') && 30 < $datetime->format('G'))) {
            $endofday = clone $datetime;
            $endofday->setTime(17,30);
            $interval = $endofday->diff($datetime);

            $datetime->add(new DateInterval('P1D'));
            if (in_array($datetime->format('l'), array('Saturday', 'Sunday'))) {
                $datetime->modify('next Monday');
            }
            $datetime->setTime(8,30);
            $datetime->add($interval);
        }

        return $datetime;
    }

    $future = addRollover('2014-06-26 11:41:00', '+63 hours');
    echo $future->format('Y-m-d H:i:s');

Output for git.master, git.master_jit, rfc.property-hooks: 2014-06-29 17:41:00

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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