How to Array / Class in PHP

Following three (3) listed functions return all related information of an object that may be an ARRAY in PHP.

function print_vars($obj)
{
 foreach (get_object_vars($obj) as $prop => $val) {
   echo "\t$prop = $val\n";
 }
}

function print_methods($obj)
{
   $arr = get_class_methods(get_class($obj));
   foreach ($arr as $method) {
       echo "\tfunction $method()\n";
   }
}

function class_parentage($obj, $class)
{
 if (is_subclass_of($GLOBALS[$obj], $class)) {
   echo "Object $obj belongs to class " . get_class($$obj);
   echo " a subclass of $class\n";
 }
 else {
   echo "Object $obj does not belong to a
  subclass of $class\n";
 }
}