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@ 2017-01-11T20:18:31Z

<?php

function getTimeRange($month)
    {
        $month = str_pad($month, 2, '0', STR_PAD_LEFT);
        $year = $month > date('m') ? date('Y') - 1 : date('Y');
        $start_date = "{$year}-{$month}-01";
        $end_date = date('Y-m-d', strtotime("+1 month", strtotime($start_date)));
        return array(
            'start_date' => $start_date,
            'end_date' => $end_date
        );
    }
    
function getTimeRange2($month, $year = 0) {
        $month = str_pad($month, 2, '0', STR_PAD_LEFT);
        $year = ($year ? : ($month > date('m') ? date('Y') - 1 : date('Y')));
        $res = array(
            'start_date' => "{$year}-{$month}-01",
            'end_date' => date('Y-m-d', strtotime("+1 month", strtotime($res['start_date'])))
        );
        return $res;
    }
    
var_dump(getTimeRange(1));
var_dump(getTimeRange2(1));

Output for git.master, git.master_jit: array(2) { ["start_date"]=> string(10) "2017-01-01" ["end_date"]=> string(10) "2017-02-01" } Warning: Undefined variable $res in /in/Z68l9 on line 20 Warning: Trying to access array offset on value of type null in /in/Z68l9 on line 20 Deprecated: strtotime(): Passing null to parameter #1 ($datetime) of type string is deprecated in /in/Z68l9 on line 20 array(2) { ["start_date"]=> string(10) "2017-01-01" ["end_date"]=> string(10) "1970-02-01" }
Output for rfc.property-hooks: array(2) { ["start_date"]=> string(10) "2017-01-01" ["end_date"]=> string(10) "2017-02-01" } Warning: Undefined variable $res in /in/Z68l9 on line 20 Warning: Trying to access array offset on null in /in/Z68l9 on line 20 Deprecated: strtotime(): Passing null to parameter #1 ($datetime) of type string is deprecated in /in/Z68l9 on line 20 array(2) { ["start_date"]=> string(10) "2017-01-01" ["end_date"]=> string(10) "1970-02-01" }

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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