php array walk recursive

array_walk_recursive get return value

Flatten multidimensional associative array to array

function flatten(array $array, $prefix="") {
    $result = Array();
    array_walk($array, function ($value, $key) use ($array, $prefix, &$result) {
        $path = $prefix ? "$prefix.$key" : $key;
        if (is_array($value)) {
            $result = array_merge($result, flatten($value, $path));
        } else {
            $result[$path] = $value;
        }
    });

    return $result;
}

print_r(flatten($arrr));

from site:
https://stackoverflow.com/questions/39071537/array-walk-recursive-to-return-array-name-rather-than-index-number

Posted by: Guest on October-29-2020

<?php /* * Two Dimensional Arrays:- array_walk_recursive() function is used **/ $alphabets = array( 'a' => 'apple', 'b' => 'ball', 'c' => 'cat', array( 'd' => 'dog', 'e' => 'elephant', ) ); array_walk_recursive($alphabets, 'myFunc2', 'for' ); function myFunc2($value, $key, $param){ echo "$key $param $value <br>"; }; ?> /* Out Put a for apple b for ball c for cat d for dog e for elephant */

$arr = array(1, array(2, 3)); // Call function on every item, even subarrays. // Sign $item as reference to work on original item. array_walk_recursive($arr, function(&$item, $key, $myParam){ $item *= 2; }, 'will be in myParam'); // $arr now is [2, [4, 6]]

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