ORM::as_array PHP Method

    public function as_array()
    {
        if (func_num_args() === 0) {
            return $this->_data;
        }
        $args = func_get_args();
        return array_intersect_key($this->_data, array_flip($args));
    }

 /**
  * Returns an array of all the '_col' members. The keys will be the name
  * of the member with the '_col' chopped off the end.
  *
  * @todo update to work with $this->_orm
  * @return array
  */
 public function as_array()
 {
     if ($this->_orm) {
         $data = $this->_orm->as_array();
     } else {
         $data = array();
         foreach ($this as $key => $val) {
             if (substr($key, -4) == '_col' && $val) {
                 $data[substr($key, 0, -4)] = $val;
             }
         }
     }
     return $data;
 }