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@ 2024-01-13T08:43:38Z

<?php

$array = [
    '2015-09-23' => [
        'user' => [13, 12],
        'count' => [
            'count' => 2,
            'total' => 2,
        ],
    ],
    '2015-09-24' => [
        'user' => [14],
        'count' => [
            'count' => 1,
            'total' => 1,
        ],
    ],
    '2015-09-25' => [
        'user' => [15],
        'count' => [
            'count' => 1,
            'total' => 1,
        ],
    ],
    '2015-09-26' => [
        'user' => [16],
        'count' => [
            'count' => 1,
            'total' => 1,
        ],
    ],
    '2015-09-27' => [
        'user' => [17, 18],
        'count' => [
            'count' => 2,
            'total' => 2,
        ],
    ],
    '2015-09-28' => [
        'user' => [19, 20, 21, 22, 23, 24, 25, 26, 27, 28],
        'count' => [
            'count' => 10,
            'total' => 10,
        ],
    ],
];

$total = 0;
foreach ($array as ['count' => ['count' => $c, 'total' => &$t]]) {
    $total += $c;
    $t = $total;
} 
var_export($array);

Output for git.master, git.master_jit, rfc.property-hooks: array ( '2015-09-23' => array ( 'user' => array ( 0 => 13, 1 => 12, ), 'count' => array ( 'count' => 2, 'total' => 2, ), ), '2015-09-24' => array ( 'user' => array ( 0 => 14, ), 'count' => array ( 'count' => 1, 'total' => 3, ), ), '2015-09-25' => array ( 'user' => array ( 0 => 15, ), 'count' => array ( 'count' => 1, 'total' => 4, ), ), '2015-09-26' => array ( 'user' => array ( 0 => 16, ), 'count' => array ( 'count' => 1, 'total' => 5, ), ), '2015-09-27' => array ( 'user' => array ( 0 => 17, 1 => 18, ), 'count' => array ( 'count' => 2, 'total' => 7, ), ), '2015-09-28' => array ( 'user' => array ( 0 => 19, 1 => 20, 2 => 21, 3 => 22, 4 => 23, 5 => 24, 6 => 25, 7 => 26, 8 => 27, 9 => 28, ), 'count' => array ( 'count' => 10, 'total' => 17, ), ), )

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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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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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