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run code in 300+ PHP versions simultaneously

@ 2024-01-22T22:33:27Z

<?php

$array = [
    'dir1' => [
        'dir2' => [
            'dir3' => [
                'dir4' => [
                    'file1.php',
                    'abc.php',
                ]
            ],
            'file2.php',
            'abc.php',
        ]
    ],
    'bar' => [
        'foo12' => ['blah', 'blar', 'blag', 'blas'],
        'foo9' => ['boom6', 'boom55', 'boom123'],
        'foo888' => [],
    ],
    'abc' => [
        'abc' => [
            'abc' => [
                'file5.php',
            ]
        ]
    ]
];

function sortFileSystem(array &$array)
{
    $dirs = [];
    $files = [];
    foreach ($array as $k => &$v) {
        if (is_array($v)) {
            (__FUNCTION__)($v);
            $dirs[$k] = $v;  // preserve key
        } else {
            $files[] = $v;  // key is unneeded
        }
    }
    ksort($dirs, SORT_NATURAL);
    sort($files, SORT_NATURAL);
    $array = array_merge($dirs, $files); // put dirs before files
}

sortFileSystem($array);
var_export($array);

Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14: array ( 'abc' => array ( 'abc' => array ( 'abc' => array ( 0 => 'file5.php', ), ), ), 'bar' => array ( 'foo9' => array ( 0 => 'boom6', 1 => 'boom55', 2 => 'boom123', ), 'foo12' => array ( 0 => 'blag', 1 => 'blah', 2 => 'blar', 3 => 'blas', ), 'foo888' => array ( ), ), 'dir1' => array ( 'dir2' => array ( 'dir3' => array ( 'dir4' => array ( 0 => 'abc.php', 1 => 'file1.php', ), ), 0 => 'abc.php', 1 => 'file2.php', ), ), )

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