I’m not sure how to describe or even title this issue but I feel the psuedo code explains it well. I have a multidimensional array called $data (4 levels) and some php code as follows:

    $new_array = [];
    
    foreach($data as $a=>$bs){
        foreach($bs as $b=$cs){
            foreach($cs as $c=$d){
                $new_array[$c][$b][$a] = $d;
            }
        }
    }
    
    //I don't know why ...
    
    print_r($new_array);//works, including indices
    
    print_r($new_array['known_index']);//displays nothing, no errors or warnings
    
    print_r($new_array[0]);//displays nothing, no errors or warnings
    
    print_r(current($new_array));//works

I tried enclosing the index variables in double quotes and I have worked around the problem overall. I just don’t know what’s going on and it feels like I should. PHP 8.2