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@ 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 git.master, git.master_jit, rfc.property-hooks: 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 ) ) )

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2022-12-01 RFC: Property hooks - included in PHP 8.4
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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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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