PHP Database Transactions with PDO

1 year ago
Emily Johnson
2 minutes

In PHP, you can write database transactions using the following methods:

  1. Utilize the PDO (PHP Data Objects) extension library: PDO is a database extension library for PHP, which offers a unified interface for accessing various types of databases. You can follow these steps to write a database transaction:
  2. // Create a PDO object
    $pdo = new PDO($dsn, $username, $password);

    // Start a transaction
    $pdo->beginTransaction();

    try {
    // Execute multiple database operations, such as insertions, updates, deletions, etc.
    $pdo->exec(‘INSERT INTO table1 (column1) VALUES (value1)’);
    $pdo->exec(‘UPDATE table2 SET column2 = value2 WHERE condition’);

    // Commit the transaction
    $pdo->commit();
    } catch (PDOException $e) {
    // Roll back the transaction when an exception occurs
    $pdo->rollBack();
    echo “Transaction failed: ” . $e->getMessage();
    }

  3. Utilize the MySQLi extension library: The MySQLi extension library is a specialized extension library for PHP designed specifically for MySQL databases, offering a set of functions for performing database operations. To write a database transaction, you can follow these steps:
  4. Create a new MySQLi object and start a transaction. Perform multiple database operations such as insert, update, delete, etc. If there is an exception, rollback the transaction and display an error message.

Whether using PDO or MySQLi, it is necessary to begin a transaction using the beginTransaction() method before executing multiple database operations, and to commit the transaction using the commit() method after the operations are completed. In case of an exception, the rollBack() method should be used to rollback the transaction.

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