--TEST-- Causal consistency: new session has no operation time --SKIPIF-- <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?> <?php skip_if_not_libmongoc_crypto(); ?> <?php skip_if_not_replica_set_or_mongos_with_replica_set(); ?> <?php skip_if_server_version('<', '3.6'); ?> --FILE-- <?php require_once __DIR__ . "/../utils/basic.inc"; $manager = new MongoDB\Driver\Manager(URI); $session = $manager->startSession(); echo "Initial operation time:\n"; var_dump($session->getOperationTime()); ?> ===DONE=== <?php exit(0); ?> --EXPECT-- Initial operation time: NULL ===DONE===