Base::checkRequiredInputParams

protected function checkRequiredInputParams(array $inputParams, array $required)
{
	foreach ($required as $item)
	{
		if(!isset($inputParams[$item]) || (!$inputParams[$item] && !(is_string($inputParams[$item]) && mb_strlen($inputParams[$item]))))
		{
			$this->errorCollection->add(array(new Error("Error: required parameter {$item}", self::ERROR_REQUIRED_PARAMETER)));
			return false;
		}
	}

	return true;
}