change a key of a single element array

Question

I have an array tree from a database, I want to change the key of a child element in this case the second array \'eric\'=>array into integer \'0\'=>array as follow :

<

Answer 1

To change all of the child keys to numeric values, you can simply just use array_values()

Live Demo

for($i = 0; $i <= count($data) -1; $i++) { # This loops through each country
    $data[$i]['nodes'] = array_map(function($node) { # This preserves the parent text value
        return array_values($node); # [0] => Paris, [1] => array(...)
    }, $data[$i]['nodes']);
}

Output

[ ... => [ text => Paris, nodes => [ 0 => Paris, 1 => [ ... ] ] ... ] ... ]