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@ 2024-11-06T23:19:31Z

<?php

$array = [
    ["division" => "division1"],
    ["division" => "division2"],
    ["division" => "division1", "department" => "department10"],
    ["division" => "division1", "department" => null, "team" => "team91"],
    ["division" => "division1", "department" => "department10", "team" => "team85"],
    ["division" => "division3", "department" => "department999"],
    ["division" => "division2", "department" => "department33"],
    ["division" => "division1", "department" => null, "team" => "team92"]
];

array_multisort(array_map('count', $array), SORT_DESC, $array);
$result = [];
foreach ($array as $row) {
    foreach ($result as $saved) {
        if (!array_diff_assoc($row, $saved)) {
            continue 2;
        }
    }
    $result[] = $row;
}
var_export($result);

Output for git.master_jit, git.master: array ( 0 => array ( 'division' => 'division1', 'department' => NULL, 'team' => 'team91', ), 1 => array ( 'division' => 'division1', 'department' => NULL, 'team' => 'team92', ), 2 => array ( 'division' => 'division1', 'department' => 'department10', 'team' => 'team85', ), 3 => array ( 'division' => 'division2', 'department' => 'department33', ), 4 => array ( 'division' => 'division3', 'department' => 'department999', ), )

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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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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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