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@ 2021-02-13T03:57:26Z

<?php

$categorizedOptions = [
    'category' => [
        '1' => [
            'name' => 'c1',
            'attribute' => [
                '1' => [
                    'name' => 'a1',
                    'option' => [
                        '1' => [
                            'name' => 'o1'
                        ],
                        '2' => [
                            'name' => 'o2'
                        ]
                    ]
                ],
                '2' => [
                    'name' => 'a2',
                    'option' => [
                        '3' => [
                            'name' => 'o3'
                        ],
                        '4' => [
                            'name' => 'o4'
                        ]
                    ]
                ]
            ]
        ],
        '2' => [
            'name' => 'c2',
            'attribute' => [
                '3' => [
                    'name' => 'a3',
                    'option' => [
                        '5' => [
                            'name' => 'o5'
                        ],
                        '6' => [
                            'name' => 'o6'
                        ]
                    ]
                ],
                '4' => [
                    'name' => 'a4',
                    'option' => [
                        '7' => [
                            'name' => 'o7'
                        ],
                        '8' => [
                            'name' => 'o8'
                        ]
                    ]
                ]
            ]
        ]
    ]
];

$final = [];
foreach ($categorizedOptions as $categories) {
    foreach ($categories as $category => ['name' => $categoryname, 'attribute' => $attributes]) {
        foreach ($attributes as $attribute => ['name' => $attributename, 'option' => $options]) {
            foreach ($options as $option => ['name' => $optionname]) {
                $final[] = compact(['category', 'categoryname', 'attribute', 'attributename', 'option', 'optionname']);
            }
        }
    }
}

var_export($final);

Output for git.master, git.master_jit, rfc.property-hooks: array ( 0 => array ( 'category' => 1, 'categoryname' => 'c1', 'attribute' => 1, 'attributename' => 'a1', 'option' => 1, 'optionname' => 'o1', ), 1 => array ( 'category' => 1, 'categoryname' => 'c1', 'attribute' => 1, 'attributename' => 'a1', 'option' => 2, 'optionname' => 'o2', ), 2 => array ( 'category' => 1, 'categoryname' => 'c1', 'attribute' => 2, 'attributename' => 'a2', 'option' => 3, 'optionname' => 'o3', ), 3 => array ( 'category' => 1, 'categoryname' => 'c1', 'attribute' => 2, 'attributename' => 'a2', 'option' => 4, 'optionname' => 'o4', ), 4 => array ( 'category' => 2, 'categoryname' => 'c2', 'attribute' => 3, 'attributename' => 'a3', 'option' => 5, 'optionname' => 'o5', ), 5 => array ( 'category' => 2, 'categoryname' => 'c2', 'attribute' => 3, 'attributename' => 'a3', 'option' => 6, 'optionname' => 'o6', ), 6 => array ( 'category' => 2, 'categoryname' => 'c2', 'attribute' => 4, 'attributename' => 'a4', 'option' => 7, 'optionname' => 'o7', ), 7 => array ( 'category' => 2, 'categoryname' => 'c2', 'attribute' => 4, 'attributename' => 'a4', 'option' => 8, 'optionname' => 'o8', ), )

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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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