Application::getPersonalRoot

static function getPersonalRoot()
{
	static $personalRoot = null;
	if ($personalRoot != null)
		return $personalRoot;

	$context = Application::getInstance()->getContext();
	if ($context != null)
	{
		$server = $context->getServer();
		if ($server != null)
			return $personalRoot = $server->getPersonalRoot();
	}

	return $_SERVER["BX_PERSONAL_ROOT"] ?? '/bitrix';
}