--TEST-- MongoDB\Driver\ClientEncryption::rewrapManyDataKey() accepts null for $options --SKIPIF-- createClientEncryption([ 'keyVaultNamespace' => CSFLE_KEY_VAULT_NS, 'kmsProviders' => ['local' => ['key' => new MongoDB\BSON\Binary(CSFLE_LOCAL_KEY, 0)]], ]); var_dump($clientEncryption->rewrapManyDataKey(['_id' => 'no-matching-key'], null)); ?> ===DONE=== --EXPECTF-- object(stdClass)#%d (%d) { ["bulkWriteResult"]=> NULL } ===DONE===