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@ 2017-08-01T19:10:35Z

<?php

$arr = array(
    array(
        'name' => 'name',
        'label' => 'Label'
    ),
    array(
        'name' => 'name',
        'label' => 'Label',
        'sub_fields' => array(
            array(
                'name' => 'my_desired_target',
                'label' => 'Label'
           )
        )
    )
);


function change_recursively($arr, $previous){
    foreach($arr as $key => &$val){

        if(is_array($val)){
            If($previous == NULL){
                change_recursively($val, $key);
            }Else{
                change_recursively($val, $previous . "," .$key);
            }
        }else{

            if($key == 'name' && $val == 'my_desired_target'){
                
                $path =explode(",", $previous);
                Var_dump($path);

                //How to add new key here?
                $arr['new_key'] = 'my new value';

            }

        }

    }

}
change_recursively($arr, NULL);

Var_dump($arr);

Output for git.master, git.master_jit, rfc.property-hooks: array(3) { [0]=> string(1) "1" [1]=> string(10) "sub_fields" [2]=> string(1) "0" } array(2) { [0]=> array(2) { ["name"]=> string(4) "name" ["label"]=> string(5) "Label" } [1]=> array(3) { ["name"]=> string(4) "name" ["label"]=> string(5) "Label" ["sub_fields"]=> array(1) { [0]=> array(2) { ["name"]=> string(17) "my_desired_target" ["label"]=> string(5) "Label" } } } }

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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