Param::checkArrayParam

private function checkArrayParam(array $param)
{
	foreach ($param as $innerParam => $listParam)
	{
		if (is_array($listParam))
		{
			foreach ($listParam as $listInnerParam)
			{
				if (!isset($this->params[$innerParam][$listInnerParam]))
				{
					if (
						!isset($this->interchangeableParams[$listInnerParam]) ||
						!isset($this->params[$this->interchangeableParams[$listInnerParam]])
					)
					{
						$this->setParamError($listInnerParam);
					}
				}
			}
		}
	}
}