[PHP 5 >= 5.1.0, PHP 7, PHP 8, PECL pdo >= 0.1.0] PDO::rollBack — Rolls back a transaction public PDO::rollBack[]: bool If the database was set to autocommit mode, this function will restore autocommit mode after it has rolled back the transaction. Some databases, including MySQL, automatically issue an implicit COMMIT
when a database definition language [DDL] statement such as DROP TABLE or CREATE TABLE is issued within a transaction. The implicit COMMIT will prevent you from rolling back any other changes within the transaction boundary. This function has no parameters.Description
Parameters
Return Values
Returns true
on success or false
on failure.
Errors/Exceptions
Throws a PDOException if there is no active transaction.
Note: An exception is raised even when the
PDO::ATTR_ERRMODE
attribute is notPDO::ERRMODE_EXCEPTION
.
Examples
Example #1 Roll back a transaction
The following example begins a transaction and issues two statements that modify the database before rolling back the changes. On MySQL, however, the DROP TABLE statement automatically commits the transaction so that none of the changes in the transaction are rolled back.