how to return arrays that foreach doesn't catch

i have problem with foreach loop, i have one variable with multiple arrays like those two on the bottom and i need to get arrays from [sub] level up... i use

foreach ($global['sub'] as $sub) {
    $global['sub'] = $sub;
    $global['child_id'] = $sub['id'];
    $global['child_name'] = $sub['name'];
    $global['child_url'] = $pr. $sub['url'];
}

but it works only for arrays that have arrays in [sub] but doesn't return second array where [sub] is empty I try to get all arrays i $global variable those that have sub arrays in [sub] and those that doesn't have as well...

Array
(
    [Segment_id] => ......
    [Segment] => ......
    [Segment_url] => ......
    [Categories_id] => ......
    [Categories] => ......
    [Categories_url] => ......
    [sub_Categories_id] => ......
    [sub_Categories] => ......
    [sub_Categories_url] => ......
    [categoryId] => ......
    [categoryName] => ......
    [product_count] => ......
    [sub] => Array
        (
            [0] => Array
                (
                    [id] => ......
                    [name] => ......
                    [anchor] => 
                    [url] => ......
                    [description] => 
                    [productCount] => ......
                    [products] => ......
                        (
                            [0] =>
                            [1] =>
                            [2] =>
                            [3] =>
                            [4] =>
                            [5] =>
                        )

                )

and

Array
(
    [Segment_id] => ......
    [Segment] => ......
    [Segment_url] => ......
    [Categories_id] => ......
    [Categories] => ......
    [Categories_url] => ......
    [sub_Categories_id] => ......
    [sub_Categories] => ......
    [sub_Categories_url] => ......
    [categoryId] => 1394
    [categoryName] => ......
    [product_count] => ......
    [sub] => Array
        (
        )

i need to get

Array
(
    [Segment_id] => .....
    [Segment] => .......
    [Segment_url] => .......
    [Categories_id] => .....
    [Categories] => .....
    [Categories_url] => ......
    [sub_Categories_id] => ....
    [sub_Categories] => .....
    [sub_Categories_url] => ......
    [categoryId] => 397
    [categoryName] => ......
    [product_count] => ......
    [subid] => .....
    [sub_name] => ......
    [sub_url] => ......
    [description] => 
    [sub_productCount] => ......
  

second one that doesn't have anything in [sub] might be as is now...

source https://stackoverflow.com/questions/70249883/how-to-return-arrays-that-foreach-doesnt-catch