On gists

array_walk_recursive

PHP

demo.php Raw #

<?php

$data = array(
    array('id' => 1, 'name' => 'John', 'children' => array('Alice', 'Bob')),
    array('id' => 2, 'name' => 'Jane', 'children' => array('Charlie', 'David')),
);

function add_last_name(&$value, $key) {
    if ($key === 'name') {
        $value .= ' Doe';
    }
}

array_walk_recursive($data, 'add_last_name');

print_r($data);

/*

Array
(
    [0] => Array
        (
            [id] => 1
            [name] => John Doe
            [children] => Array
                (
                    [0] => Alice Doe
                    [1] => Bob Doe
                )
        )
    [1] => Array
        (
            [id] => 2
            [name] => Jane Doe
            [children] => Array
                (
                    [0] => Charlie Doe
                    [1] => David Doe
                )
        )
)


*/