public function get_profile_fields($field = null, $default = null)
	{
		if (empty($this->user))
		{
			return false;
		}

		if (isset($this->user['profile_fields']))
		{
			is_array($this->user['profile_fields']) or $this->user['profile_fields'] = (@unserialize($this->user['profile_fields']) ?: array());
		}
		else
		{
			$this->user['profile_fields'] = array();
		}

		return is_null($field) ? $this->user['profile_fields'] : \Arr::get($this->user['profile_fields'], $field, $default);
	}