Phalcon事务和嵌套事务 _嵌套事务

Phalcon支持事务处理, 因为它随PDO一起提供。为了提高数据库的性能, 我们可以执行数据操作。下面是应用事务的数据库结构：

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事务示例：

< ?phptry { // Start a transaction $connection-> begin(); // Execute some SQL statements $connection-> execute('DELETE 'company' WHERE 'id' = 101'); $connection-> execute('DELETE 'company' WHERE 'id' = 102'); $connection-> execute('DELETE 'company' WHERE 'id' = 103'); // Commit if everything goes well $connection-> commit(); } catch (Exception $e) { // An exception has occurred rollback the transaction $connection-> rollback(); }

//数据库” 公司” 数据已删除。
嵌套事务示例：

< ?phptry { // Start a transaction $connection-> begin(); // Execute some SQL statements $connection-> execute('DELETE 'company' WHERE 'id' = 101'); try { // Start a nested transaction $connection-> begin(); // Execute these SQL statements into the nested transaction $connection-> execute('DELETE 'company' WHERE 'id' = 102'); $connection-> execute('DELETE 'company' WHERE 'id' = 103'); // Create a save point $connection-> commit(); } catch (Exception $e) { // An error has occurred, release the nested transaction $connection-> rollback(); }// Continue, executing more SQL statements $connection-> execute('DELETE 'company' WHERE 'id' = 104'); // Commit if everything goes well $connection-> commit(); } catch (Exception $e) { // An exception has occurred rollback the transaction $connection-> rollback(); }

【Phalcon事务和嵌套事务】//数据库” 公司” 数据已删除。

活动名称	Triggered	Break Operation
afterConnect	成功连接到数据库系统后	No
beforeQuery	在将SQL语句发送到数据库系统之前	Yes
afterQuery	将SQL语句发送到数据库系统后	No
beforeDisconnect	关闭临时数据??库连接之前	No
beginTransaction	在开始事务之前	No
rollbackTransaction	回滚事务之前	No
commitTransaction	提交事务之前	No