developed database with the ability to save text data with a description with input and output

function add($data, $desc) {
  $file = file_get_contents('file.json');
  $file = json_decode($file, true);

  $file[] = ['data' => $data, 'desc' => $desc];

  $file = json_encode($file);
  file_put_contents('file.json', $file);
}