UserFieldType::prepareOption

static function prepareOption($option): array
{
	$result = [];
	if (is_array($option))
	{
		$option = array_change_key_case($option, CASE_LOWER);
		if ($option['height'])
		{
			$result['height'] = (int)$option['height'];
		}
	}

	return $result;
}