Online PHP editor | output for sRrvS

@ 2023-11-16T10:31:59Z

<?php

$users = [
    [
        "name" => "Marcos",
        "roles" => [
            "admin" => "2023-11-16T10:23:45Z",
            "reader" => "2023-11-16T10:24:23Z"
        ]
    ],
    [
        "name" => "Roberto",
        "roles" => [
            "admin" => "2023-11-16T10:23:45Z",
        ]
    ],
    [
        "name" => "Jaime",
        "roles" => [
            "admin" => "2023-11-16T10:23:45Z",
            "writer" => "2023-11-16T10:24:23Z"
        ]
    ],
    [
        "name" => "Xabier",
        "roles" => [
            "admin" => "2023-11-16T10:23:45Z",
            "writer" => "2023-11-16T10:24:23Z",
            "reader" => "2023-11-16T10:24:23Z"
        ]
    ]
];

foreach($users as &$u){
    ksort($u['roles']);
}

usort($users, fn($a, $b) => strcmp(
                                implode("|", array_keys($a['roles'])), 
                                implode("|", array_keys($b['roles']))
                            )
    );

print_r($users);

Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0: Array ( [0] => Array ( [name] => Roberto [roles] => Array ( [admin] => 2023-11-16T10:23:45Z ) ) [1] => Array ( [name] => Marcos [roles] => Array ( [admin] => 2023-11-16T10:23:45Z [reader] => 2023-11-16T10:24:23Z ) ) [2] => Array ( [name] => Xabier [roles] => Array ( [admin] => 2023-11-16T10:23:45Z [reader] => 2023-11-16T10:24:23Z [writer] => 2023-11-16T10:24:23Z ) ) [3] => Array ( [name] => Jaime [roles] => Array ( [admin] => 2023-11-16T10:23:45Z [writer] => 2023-11-16T10:24:23Z ) ) )
Output for 8.4.15: /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.

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