TabSorter::prepareUserOptions

static function prepareUserOptions($userOptions, $userOptionsKey): array
{
	$userOptionsSettings = [];

	if (is_array($userOptions)
		&& !empty($userOptions[$userOptionsKey]))
	{
		$userOptionsSettings = Json::decode($userOptions[$userOptionsKey]);
		if (!is_array($userOptionsSettings))
		{
			$userOptionsSettings = [];
		}
	}

	return $userOptionsSettings;
}