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@ 2023-02-25T12:20:39Z

<?php

$array = [
    (object) ['id' => 1, 'category' => 'Pizza', 'product' => 'Large Pizza', 'complement_type' => 'Bread', 'option' => 'Brown bread'],
    (object) ['id' => 2, 'category' => 'Pizza', 'product' => 'Small Pizza', 'complement_type' => 'Bread', 'option' => 'White bread'],
    (object) ['id' => 3, 'category' => 'Pizza', 'product' => 'Small Pizza', 'complement_type' => 'Ingredients', 'option' => 'Olives'],          
    (object) ['id' => 4, 'category' => 'Salads', 'product' => 'Green Salad', 'complement_type' => 'Extras', 'option' => 'Bacon'],
    (object) ['id' => 5, 'category' => 'Salads', 'product' => 'Cesars Salad', 'complement_type' => 'Extras', 'option' => 'Lettuce'],
];

$result = [];
foreach ($array as $obj) {
    $result[$obj->category][$obj->product][$obj->complement_type] = $obj->option;
}
var_export($result);

Output for git.master, git.master_jit, rfc.property-hooks: array ( 'Pizza' => array ( 'Large Pizza' => array ( 'Bread' => 'Brown bread', ), 'Small Pizza' => array ( 'Bread' => 'White bread', 'Ingredients' => 'Olives', ), ), 'Salads' => array ( 'Green Salad' => array ( 'Extras' => 'Bacon', ), 'Cesars Salad' => array ( 'Extras' => 'Lettuce', ), ), )

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Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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