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@ 2017-07-11T15:56:39Z

<?php

$yearMonth = '2017-06';

$firstDayOfThisMonth = new \DateTime($yearMonth . '-01');

var_dump($firstDayOfThisMonth->format('W'));

$lastDayOfThisMonth = clone $firstDayOfThisMonth;
$lastDayOfThisMonth = $lastDayOfThisMonth->modify('last day of this month');

var_dump($lastDayOfThisMonth->format('W'));


$startDate = new \DateTime($firstDayOfThisMonth->format('Y') . 'W' . $firstDayOfThisMonth->format('W'));
$endDate = new \DateTime($lastDayOfThisMonth->format('Y') . 'W' . $lastDayOfThisMonth->format('W'));
$endDate->modify('+6 days 23:59:59');

var_dump($startDate);
var_dump($endDate);



        $startDate = new \DateTime($yearMonth . '-01');
        $endDate = clone $startDate;
        $startDate->modify('first day of this week');
        $endDate->modify('last day of this week');

var_dump($startDate);
var_dump($endDate);

Output for git.master, git.master_jit, rfc.property-hooks: string(2) "22" string(2) "26" object(DateTime)#3 (3) { ["date"]=> string(26) "2017-05-29 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } object(DateTime)#4 (3) { ["date"]=> string(26) "2017-07-02 23:59:59.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } object(DateTime)#5 (3) { ["date"]=> string(26) "2017-05-01 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } object(DateTime)#3 (3) { ["date"]=> string(26) "2017-06-30 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" }

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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