SELECT statement with fetch_array in mysqli prepared statements

Question

I always find it difficult to write MySQLi prepared statements, because many functions work differently than in the old way. Right now I am facing a problem regarding

Answer 1

replace this:

    $result = $stmt->execute();
    while ($row = $result->fetch_array()) {

by this

  $stmt->bind_result($category_id);

  while($stmt->fetch()){
       $myArray=$category_id;
  }