Transaction operation

Open transaction

Pass the instructions

Parameter Name	Required	Parameter Description
connectionNames	No	Open the connection name of the transaction; string or array is specified in addConnection. Under normal circumstances, no special settings are required.

Return Description: bool returns true if it is successful, false if it fails to open

DbManager::getInstance()->startTransaction($connectionNames = 'default');

Submitting a transaction

Pass the instructions

Parameter Name	Required	Parameter Description
ConnectName	No	Specifies to submit a connection name, if not passed, automatically submit the transaction connection obtained in the current coroutine. In general, no special settings are required.

Return Description: bool returns true if the submission is successful, false if it fails

DbManager::getInstance()->commit($connectName = null);

Rollback transaction

Pass the instructions

Parameter Name	Required	Parameter Description
ConnectName	No	Specifies to submit a connection name, if not passed, automatically submit the transaction connection obtained in the current coroutine. In general, no special settings are required.

Return Description: bool returns true if the submission is successful, false if it fails

DbManager::getInstance()->rollback();

Transaction use case

$user = UserModel::create()->get(4);

$user->age = 4;
// Open the transaction
$strat = DbManager::getInstance()->startTransaction();

// update operation
$res = $user->update();

// Roll back directly regardless of whether the update succeeded or failed
$rollback = DbManager::getInstance()->rollback();

// returns false because the connection has been rolled back. The transaction is closed.
$commit = DbManager::getInstance()->commit();
Var_dump($commit);