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@ 2019-09-22T08:56:25Z

<?php
$a = Array
(
    '0' => Array
        (
            '0' => Array
                (
                    'win_number' => 2389,
                    'id' => 1,
                    'user_id' => 2
                ),

            '1' => Array
                (
                    'win_number' => 2993,
                    'id' => 2,
                    'user_id' => 2
                ),

            '2' => Array
                (
                    'win_number' => 9931,
                    'id' => 3,
                    'user_id' => 2
                )
        ),

    '1' => Array
        (
            '0' => Array
                (
                    'win_number' => 3748,
                    'id' => 14,
                    'user_id' => 7
                ),
            '1' => Array
                (
                    'win_number' => 9393,
                    'id' => 15,
                    'user_id' => 7
                ),
            '2' => Array
                (
                    'win_number' => 3782,
                    'id' => 16,
                    'user_id' => 7
                )              
        )
);
$f = array_merge(...$a);
print_r($f);

Output for git.master, git.master_jit, rfc.property-hooks: Array ( [0] => Array ( [win_number] => 2389 [id] => 1 [user_id] => 2 ) [1] => Array ( [win_number] => 2993 [id] => 2 [user_id] => 2 ) [2] => Array ( [win_number] => 9931 [id] => 3 [user_id] => 2 ) [3] => Array ( [win_number] => 3748 [id] => 14 [user_id] => 7 ) [4] => Array ( [win_number] => 9393 [id] => 15 [user_id] => 7 ) [5] => Array ( [win_number] => 3782 [id] => 16 [user_id] => 7 ) )

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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