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@ 2023-01-29T07:56:38Z

<?php

$array = [
    'first_level' => [
        'dir_3' => [
            'subdir_1' => [
                'file_2.mp4' => (object) [
                    'name' => 'file_2.mp4'
                ],
                'file_1.mp4' => (object) [
                    'name' => 'file_1.mp4'
                ]
            ]
        ],
        'dir_1' => [
            'subdir_2' => [
                'file_6.mp4' => (object) [
                    'name' => 'file_6.mp4'
                ],
                'file_9.mp4' => (object) [
                    'name' => 'file_9.mp4'
                ],
                'file_7.mp4' => (object) [
                    'name' => 'file_7.mp4'
                ],
                'file_17.mp4' => (object) [
                    'name' => 'file_17.mp4'
                ],
            ],
            'subdir_1' => [
                'file_8.mp4' => (object) [
                    'name' => 'file_8.mp4'
                ],
            ]
        ]
    ],
    'fake_level' => [
        'dir_7' => [
            'subdir_1' => [
                'file_5.mp4' => (object) [
                    'name' => 'file_5.mp4',
                    'size' => 56,
                    'active' => true,
                ],
                'file_19.mp4' => (object) [
                    'name' => 'file_19.mp4',
                    'size' => 77,
                    'active' => false,
                ],
                'file_33.mp4' => (object) [
                    'name' => 'file_33.mp4',
                    'size' => 81,
                    'active' => true,
                ],
            ]
        ],
        'dir_13' => [],
        'dir_101' => [],
        'dir_66' => [],
    ]
];

function nat_ksort_r(array &$data): void
{
    if (is_array($data)) {
        ksort($data, SORT_NATURAL);
        array_walk($data, __METHOD__);
    }
}

nat_ksort_r($array);
var_export($array);

Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3: Fatal error: Uncaught TypeError: nat_ksort_r(): Argument #1 ($data) must be of type array, stdClass given in /in/sWY4u:63 Stack trace: #0 [internal function]: nat_ksort_r(Object(stdClass), 'file_5.mp4') #1 /in/sWY4u(67): array_walk(Array, 'nat_ksort_r') #2 [internal function]: nat_ksort_r(Array, 'subdir_1') #3 /in/sWY4u(67): array_walk(Array, 'nat_ksort_r') #4 [internal function]: nat_ksort_r(Array, 'dir_7') #5 /in/sWY4u(67): array_walk(Array, 'nat_ksort_r') #6 [internal function]: nat_ksort_r(Array, 'fake_level') #7 /in/sWY4u(67): array_walk(Array, 'nat_ksort_r') #8 /in/sWY4u(71): nat_ksort_r(Array) #9 {main} thrown in /in/sWY4u on line 63
Process exited with code 255.

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