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@ 2021-08-06T13:27:55Z

<?php


$products = [
    [
        "address" => "street 2",
        "product_name" => "Adidas1",
    ],
    [
        "address" => "street 2",
        "product_name" => "Adidas2",
    ],
    [
        "address" => "street 2",
        "product_name" => "Adidas3",
    ],
    [
        "address" => "street 2",
        "product_name" => "Adidas4",
    ],
    [
        "address" => "street name1",
        "product_name" => "Nike1",
    ],
    [
        "address" => "street name1",
        "product_name" => "Nike2",
    ]
];

$result = [];
foreach ($products as $row) {
    if (!isset($result[$row['address']])) {
        $row['product_name'] = (array)$row['product_name'];
        $result[$row['address']] = $row;
    } else {
        $result[$row['address']]['product_name'][] = $row['product_name'];
    }
}
var_export(array_values($result));

Output for git.master, git.master_jit, rfc.property-hooks: array ( 0 => array ( 'address' => 'street 2', 'product_name' => array ( 0 => 'Adidas1', 1 => 'Adidas2', 2 => 'Adidas3', 3 => 'Adidas4', ), ), 1 => array ( 'address' => 'street name1', 'product_name' => array ( 0 => 'Nike1', 1 => 'Nike2', ), ), )

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2022-12-01 RFC: Property hooks - included in PHP 8.4
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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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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