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@ 2020-10-22T03:47:50Z

<?php

$entries = array (
    0 => 
    array (
        'CN=Abraham Lincoln,CN=Users,DC=test,DC=io' => 
        array (
            'objectclass' => 
            array (
                0 => 'top',
                1 => 'person',
                2 => 'organizationalPerson',
                3 => 'user'
            ),
            'cn' => 'AbrahamLincoln'
        ),
        
    ),
    1 => 
    array (
        'CN=Administrator,CN=Users,DC=test,DC=io' => 
        array (
            'objectclass' => 
            array (
                0 => 'top',
                1 => 'person',
                2 => 'organizationalPerson',
                3 => 'user'
            ),
            'distinguishedname' => 'CN=Administrator,CN=Users,DC=test,DC=io'
        ),
        
    ),
    2 => 
    array (
        'CN=CloudNCUsers,CN=Users,DC=test,DC=io' => 
        array (
            'objectclass' => 
            array (
                0 => 'top',
                1 => 'group'
            ),
            'distinguishedname' => 'CN=CloudNCUsers,CN=Users,DC=test,DC=io'
        ),
        
    ),
    3 => 
    array (
        'CN=Jill Dope,CN=Users,DC=test,DC=io' => 
        array (
            'objectclass' => 
            array (
                0 => 'top',
                1 => 'person',
                2 => 'organizationalPerson',
                3 => 'user'
            ),
            'distinguishedname' => 'CN=JillDope,CN=Users,DC=test,DC=io'
        ),
        
    )
);

$result = array();
foreach ($entries as $entry) {
    $result[key($entry)] = reset($entry);
}
print_r($result);

Output for git.master, git.master_jit, rfc.property-hooks: Array ( [CN=Abraham Lincoln,CN=Users,DC=test,DC=io] => Array ( [objectclass] => Array ( [0] => top [1] => person [2] => organizationalPerson [3] => user ) [cn] => AbrahamLincoln ) [CN=Administrator,CN=Users,DC=test,DC=io] => Array ( [objectclass] => Array ( [0] => top [1] => person [2] => organizationalPerson [3] => user ) [distinguishedname] => CN=Administrator,CN=Users,DC=test,DC=io ) [CN=CloudNCUsers,CN=Users,DC=test,DC=io] => Array ( [objectclass] => Array ( [0] => top [1] => group ) [distinguishedname] => CN=CloudNCUsers,CN=Users,DC=test,DC=io ) [CN=Jill Dope,CN=Users,DC=test,DC=io] => Array ( [objectclass] => Array ( [0] => top [1] => person [2] => organizationalPerson [3] => user ) [distinguishedname] => CN=JillDope,CN=Users,DC=test,DC=io ) )

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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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