How to Create recursive array from recursive array? - php

Question

Here is input array with an n-level depth
array
(
[0] => array
(
[id] => 1
[parent_id] => 0
[variable_name] => menus
[variable_value] =>
[children] => array
(
[0] => array
(
[id] => 2
[parent_id] => 1
[variable_name] => products
[variable_value] => {"name":"Products", "link":"cctv.html", "show":"1"},
)
[1] => array
(
[id] => 3
[parent_id] => 1
[variable_name] => companies
[variable_value] => {"name":"Companies", "link":"companies.html", "show":"1"},
),
),
)
[1] => array
(
[id] => 4
[parent_id] => 0
[variable_name] => breadcrumbs
[variable_value] =>
[children] => array
(
[0] => array
(
[id] => 5
[parent_id] => 4,
)
[1] => array
(
[id] => 6
[parent_id] => 4
[variable_name] => companies
[variable_value] => {"name":"Companies", "link":"companies.html", "show":"1"},
),
),
)
[2] => array
(
[id] => 7
[parent_id] => 0
[variable_name] => products
[variable_value] =>
[children] => array
(
[0] => array
(
[id] => 8
[parent_id] => 7
[variable_name] => pages
[variable_value] =>
[children] => array
(
[0] => array
(
[id] => 9
[parent_id] => 8
[variable_name] => child_category_page
[variable_value] =>
[children] => array
(
[0] => array
(
[id] => 10
[parent_id] => 9
[variable_name] => middle
[variable_value] =>
[children] => array
(
[0] => array
(
[id] => 11
[parent_id] => 10
[variable_name] => left
[variable_value] => {"name":"Companies", "link":"companies.html", "show":"1", "test":1},
),
),
),
),
),
),
),
),
),
)
I want to convert it into,
[
'menus' => [
'products' => [
'name' => 'Products',
'link' => 'cctv.html',
'show' => true,
],
'companies' => [
'name' => 'Companies',
'link' => 'companies.html',
'show' => true,
],
],
'breadcrumbs' => [
'news' => [
'text' => 'News',
'show' => true,
'link' => 'news.html',
],
'companies' => [
'text' => 'Companies',
'show' => true,
'link' => 'companies.html',
],
],
'products' => [
'pages' => [
'child_category_page' => [
'middle' => [
'left' => [
'text' => 'Companies',
'show' => true,
'link' => 'companies.html',
],
],
],
],
],
];
What I have tried is,
$data = DB::table("SITE_CONFIGS")->where("parent_id", 0)->get();
$data = get_tree_site_configs($data);
function get_tree_site_configs($data, $parent=0, &$result=[]){
$data = json_decode(json_encode($data),true);
$branch = [];
foreach ($data as $key => &$value) {
if($parent == $value['parent_id']){
$has_sub = DB::table("SITE_CONFIGS")->where("parent_id", $value['id'])->get();
$children = get_tree_site_configs($has_sub, $value['id'],$result);
if($children){
$value['children'] = $children;
}
// pr($value);
$branch[] = $value;
}
}
return $branch;
}
Note: There is parent-child relation to n-level, parent id with variable_value are leaf notes, means they don't have any children, rest all are parents of some records.

Answer 1

function get_tree_site_configs(array $config) {
$result = [];
foreach ($config as $item) {
if (isset($item['children'])) {
$value = get_tree_site_configs($item['children']);
} else {
$value = $item['variable_value'];
}
$result[$item['variable_name']] = $value;
}
return $result;
}