How does the autocommit feature in PHP MySQLi affect the handling of transactions for mass updates?

When the autocommit feature is enabled in PHP MySQLi, each query is automatically committed to the database after execution. This can be problematic when performing mass updates that should be treated as a single transaction, as each update will be committed individually. To handle mass updates as a single transaction, you can disable autocommit, begin a transaction before the updates, commit the transaction after all updates are completed, and then re-enable autocommit. 

<?php

// Connect to the database
$mysqli = new mysqli("localhost", "username", "password", "database");

// Disable autocommit
$mysqli->autocommit(FALSE);

// Begin transaction
$mysqli->begin_transaction();

// Perform mass updates
// Example: UPDATE table SET column = value WHERE condition
$mysqli->query("UPDATE table SET column1 = value1 WHERE condition1");
$mysqli->query("UPDATE table SET column2 = value2 WHERE condition2");
$mysqli->query("UPDATE table SET column3 = value3 WHERE condition3");

// Commit transaction
$mysqli->commit();

// Re-enable autocommit
$mysqli->autocommit(TRUE);

// Close the connection
$mysqli->close();

?>

Keywords

autocommit PHP MySQLi transactions mass updates

Related Questions