SubscribeManager::checkRequiredInputParams

private function checkRequiredInputParams(array $inputParams, array $requiredParams)
{
	foreach ($requiredParams as $param)
	{
		if(!isset($inputParams[$param]) || (!$inputParams[$param] &&
			!(is_string($inputParams[$param]) && mb_strlen($inputParams[$param]))))
		{
			$this->errorCollection->add(array(new Error(Loc::getMessage('ERROR_REQUIRED_PARAMATERS',
				array('#PARAM#' => $param)), self::ERROR_REQUIRED_PARAMATERS)));
			return false;
		}
	}
	return true;
}