Nelmio\Alice\Generator\Resolver\UniqueValuesPool::isIdentical PHP Method

    private function isIdentical($val1, $val2) : bool
    {
        if (gettype($val1) !== gettype($val2)) {
            return false;
        }
        if (is_object($val1)) {
            return $val1 == $val2;
        }
        if (is_scalar($val1) || null === $val1) {
            return $val1 === $val2;
        }
        if (false === is_array($val1)) {
            throw InvalidArgumentExceptionFactory::createForUnsupportedTypeForIdenticalValuesCheck($val1);
        }
        foreach ($val1 as $key => $item) {
            if (is_string($key)) {
                if (false === $this->isIdentical($item, $val2[$key])) {
                    return false;
                }
                continue;
            }
            if (false === $this->arrayHasValue($item, $val2)) {
                return false;
            }
        }
        return true;
    }