按键的子数组是否存在对关联数组进行排序-解网

问：

对不起，这个标题非常糟糕，我真的不知道该如何单行。

我有一个具有这种结构的数组

$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" => [
            "roles" => [
                "admin" => "2023-11-16T10:23:45Z",
                "writer" => "2023-11-16T10:24:23Z",
                "reader" => "2023-11-16T10:24:23Z"
            ]
        ]
    ]
];

如果所有用户都出现在此数组中，则他们都是管理员。

我想根据用户拥有的角色对用户进行排序，并逐步增加，角色偏好按字母顺序优先：

第一管理员
然后是 admin + role1
然后是管理员 + 角色 1 + 角色 2
然后是 admin + role2
等等......

PHP 排序

<?php

foreach($users as &$u){
    ksort($u['roles']); // so that we don't sort this every time during comparison which is time consuming and not efficient.
}

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

print_r($users);

在线演示

按键的子数组是否存在对关联数组进行排序

Order array of associative arrays by sub-array existence of key

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