How to check if JSON object is empty in PHP?

Question

I\'m reading JSON data with PHP and that data contains empty objects (like {}). So the problem is, I have to handle the case when object is empty in different m

Answer 1

I had to tell if an object was empty or not, but I also had to ignore private and protected properties, so I made this little function with which you can do this.

function empty_obj(&$object, $ignore_private = true, $ignore_protected = true) {
  $obj_name = get_class($object);
  $obj = (array)$object;

  foreach(array_keys($obj) as $prop) {
    $is_private = $is_protected = false;

    $prop = preg_replace("/[^\w*]/", '', $prop);
    $prop_name = str_replace(array($obj_name, '*'), '', $prop);

    if(preg_match("~^$obj_name$prop_name$~", $prop))
      $is_private = true;
    if(preg_match("~^\*$prop_name$~", $prop))
      $is_protected = true;

    if(!$is_private || !$is_protected || ($is_private && !$ignore_private) || ($is_protected && !$ignore_protected))
      return;
  }
  return true;
}