Online PHP editor | rfc for W1fLS

@ 2021-03-29T21:28:52Z

<?php

$data = [
    'Orders' => [
        [
            'transaction_id' => '78078',
            'date' => 1616277653,
            'currency' => 'EUR',
            'items' => [
                ['title' => 'Title 1', 'quantity' => 200, 'price' => 2.1, 'sku' => '1T.810BK'],
                ['title' => 'Title 2', 'quantity' => 250, 'price' => 1.78, 'sku' => '1090.005BK'],
            ],
        ],
        [
            'transaction_id' => 78079,
            'date' => 1616597838,
            'currency' => 'EUR',
            'items' => [
                ['title' => 'title 3', 'quantity' => 3, 'price' => 118.3, 'sku' => '1.DIYBOX.ULT.638RE'],
            ],
        ],
        [
            'transaction_id' => 78080,
            'date' => 1616598322,
            'currency' => 'EUR',
            'items' => [
                ['title' => 'title 2', 'quantity' => 300, 'price' => 1.78, 'sku' => '1090.005BK'],
            ],
        ]
    ]
];

var_export(
    array_reduce(
        array_merge(
            ...array_column($data['Orders'], 'items')
        ),
        function($carry, $item) {
            $carry[$item['sku']] = ($carry[$item['sku']] ?? 0) + $item['quantity'];
            return $carry;
        }
    )
);

Output for git.master, git.master_jit, rfc.property-hooks: array ( '1T.810BK' => 200, '1090.005BK' => 550, '1.DIYBOX.ULT.638RE' => 3, )

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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