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@ 2023-02-21T10:51:30Z

<?php

$array = [
    [
        'id' => 112,
        'name' => 'John',
        'country' => 'Spain',
        'age' => 24,
        'company' => 'One',
        'price' => 10
    ],
    [
        'id' => 112,
        'name' => 'John',
        'country' => 'Spain',
        'age' => 24,
        'company' => 'Two',
        'price' => 15
    ],
    [
        'id' => 112,
        'name' => 'John',
        'country' => 'Spain',
        'age' => 24,
        'company' => 'Three',
        'price' => 20
    ],
    [
        'id' => 224,
        'name' => 'Paul',
        'country' => 'France',
        'age' => 25,
        'company' => 'One',
        'price' => 25
    ],
    [
        'id' => 224,
        'name' => 'Paul',
        'country' => 'France',
        'age' => 25,
        'company' => 'Two',
        'price' => 40
    ]
];

$result = [];
foreach ($array as $row) {
    $companies = array_splice($row, -2);
    $result[$row['id']] ??= $row;
    $result[$row['id']]['companies'][] = $companies;
}
var_export($result);

Output for git.master, git.master_jit, rfc.property-hooks: array ( 112 => array ( 'id' => 112, 'name' => 'John', 'country' => 'Spain', 'age' => 24, 'companies' => array ( 0 => array ( 'company' => 'One', 'price' => 10, ), 1 => array ( 'company' => 'Two', 'price' => 15, ), 2 => array ( 'company' => 'Three', 'price' => 20, ), ), ), 224 => array ( 'id' => 224, 'name' => 'Paul', 'country' => 'France', 'age' => 25, 'companies' => array ( 0 => array ( 'company' => 'One', 'price' => 25, ), 1 => array ( 'company' => 'Two', 'price' => 40, ), ), ), )

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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