change a key of a single element array - php

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 :
0 => Array
('text' => 'paris',
'nodes' => Array
('eric' => Array
( 'text' => 'eric',
'nodes' => Array
(0 => Array
(
'text' => 'so.png',
),
),
),
),
),
there is my code :
while($d = mysqli_fetch_assoc($result)) {
if(!isset($data[$d['country']])) {
$data[$d['country']] = array(
'text' => $d['country'],
'nodes' => array()
);
}
if(!isset($data[$d['country']]['nodes'][$d['name']])) {
$data[$d['country']]['nodes'][$d['name']] = array(
'text' => $d['name'],
'nodes' => array()
);
}
array_push($data[$d['country']]['nodes'][$d['name']]['nodes'], $d['n_doc']);
}

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 => [ ... ] ] ... ] ... ]

Answer 2

can you change your code for this input:
Array
(
[0] => Array
(
[text] => paris
[nodes] => Array
(
[jacque] => Array
(
[text] => jacque
[nodes] => Array
(
[0] => 32.png
)
)
[anis] => Array
(
[text] => anis
[nodes] => Array
(
[0] => 5384a97ee9d6b (2).pd
)
)
)
)
[1] => Array
(
[text] => london
[nodes] => Array
(
[dodo] => Array
(
[text] => dodo
[nodes] => Array
(
[0] => 148782.svg
[1] => 333.png
)
)
[sd] => Array
(
[text] => sd
[nodes] => Array
(
[0] => 1014-favicon.ico
)
)
)
)
)