Rewind is_first_key_operator() param before checking key
Rewind is_first_key_operator() param before checking key

jmikola/mongo-php-library,jmikola/mongo-php-library-prototype,derickr/mongo-php-library-prototype,derickr/mongo-php-library,mongodb-labs/mongo-php-library-prototype,jmikola/mongo-php-library,10gen-labs/mongo-php-library-prototype,mongodb/mongo-php-library,jmikola/mongo-php-library,mongodb/mongo-php-library,derickr/mongo-php-library,jmikola/mongo-php-library,mongodb/mongo-php-library,mongodb/mongo-php-library