php array walk recursive

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Asma
28 Nov 2016
1Flatten multidimensional associative array to array
2
3function flatten(array $array, $prefix="") {
4    $result = Array();
5    array_walk($array, function ($value, $key) use ($array, $prefix, &$result) {
6        $path = $prefix ? "$prefix.$key" : $key;
7        if (is_array($value)) {
8            $result = array_merge($result, flatten($value, $path));
9        } else {
10            $result[$path] = $value;
11        }
12    });
13
14    return $result;
15}
16
17print_r(flatten($arrr));
18
19from site:
20https://stackoverflow.com/questions/39071537/array-walk-recursive-to-return-array-name-rather-than-index-number
Patrick
28 Jun 2019
1<?php
2/*
3*   Two Dimensional Arrays:- array_walk_recursive() function is used  
4**/
5$alphabets = array(
6    'a'  =>  'apple',
7    'b'  =>  'ball',
8    'c' =>  'cat',
9    array(
10        'd' =>  'dog',
11        'e' =>  'elephant',
12    )
13);
14
15array_walk_recursive($alphabets, 'myFunc2', 'for' );
16
17function myFunc2($value, $key, $param){
18    echo "$key $param $value <br>";
19};
20?>
21/*
22
23Out Put
24a for apple
25
26b for ball
27
28c for cat
29
30d for dog
31
32e for elephant
33*/
Fernand
10 Apr 2017
1$arr = array(1, array(2, 3));
2// Call function on every item, even subarrays.
3// Sign $item as reference to work on original item.
4array_walk_recursive($arr, function(&$item, $key, $myParam){
5  $item *= 2;
6}, 'will be in myParam');
7// $arr now is [2, [4, 6]]
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