Get array's key recursively and create underscore separated string

Question

Right now i got an array which has some sort of information and i need to create a table from it. e.g.

Student{
      [Address]{
              [StreetAddress         


        

Answer 1

Something like this works:

 array (
     'Address' => array (
        'StreetAddress' => 'Some Street',
        'StreetName' => 'Some Name',
     ),
    'Marks1' => array(),
    'Marks2' => '50', 
  ),
);

$result = array();

function dfs($data, $prefix = "") {
   global $result;

   if (is_array($data) && !empty($data)) {
      foreach ($data as $key => $value) {
        dfs($value, "{$prefix}_{$key}");
      }
   } else {
      $result[substr($prefix, 1)] = $data;
   }
}

dfs($arr);
var_dump($result);

?>

This prints:

array(4) {
  ["Student_Address_StreetAddress"] => string(11) "Some Street"
  ["Student_Address_StreetName"] => string(9) "Some Name"
  ["Student_Marks1"] => array(0) {}
  ["Student_Marks2"] => string(2) "50"
}