doctrine / mongodb-odm

                return false;

            }

            if (isset($mongoIndex[$option], $documentIndexOptions[$option]) &&

                $mongoIndex[$option] !== $documentIndexOptions[$option]) {

                return false;

            }

        }

        if (empty($mongoIndex['partialFilterExpression']) xor empty($documentIndexOptions['partialFilterExpression'])) {

        foreach (['default_language', 'language_override', 'textIndexVersion'] as $option) {

            /* Text indexes will always report defaults for these options, so

             * only compare if we have explicit values in the document index. */

            if (isset($mongoIndex[$option], $documentIndexOptions[$option]) &&

                $mongoIndex[$option] !== $documentIndexOptions[$option]) {

                return false;

            }

        }

        return true;