arg_name: param name: $session type: :php:`MongoDB\\Driver\\Session <mongodb-driver-session>` description: | A client session used to execute the transaction. interface: phpmethod operation: ~ optional: false --- arg_name: param name: $callback type: callback description: | A callback that will be run inside the transaction. The callback must accept a :php:`MongoDB\\Driver\\Session <mongodb-driver-session>` object as first argument. interface: phpmethod operation: ~ optional: false --- arg_name: param name: $transactionOptions type: array description: | Transaction options, which will be passed to :php:`MongoDB\\Driver\\Session::startTransaction <mongodb-driver-session.starttransaction>`. See the extension documentation for a list of supported options. interface: phpmethod operation: ~ optional: true ...