Nette\Database\Table\SqlBuilder::getConditionHash PHP Метод

    private function getConditionHash($condition, $parameters)
    {
        foreach ($parameters as $key => &$parameter) {
            if ($parameter instanceof Selection) {
                $parameter = $this->getConditionHash($parameter->getSql(), $parameter->getSqlBuilder()->getParameters());
            } elseif ($parameter instanceof SqlLiteral) {
                $parameter = $this->getConditionHash($parameter->__toString(), $parameter->getParameters());
            } elseif (is_object($parameter) && method_exists($parameter, '__toString')) {
                $parameter = $parameter->__toString();
            } elseif (is_array($parameter) || $parameter instanceof \ArrayAccess) {
                $parameter = $this->getConditionHash($key, $parameter);
            }
        }
        return md5($condition . json_encode($parameters));
    }