Difficulty with PHP 8.1 and PDO Transactions Not Rolling Back on handling
I'm upgrading from an older version and I'm writing unit tests and I've searched everywhere and can't find a clear answer... I'm experiencing an scenario with PDO transactions in PHP 8.1 where the transaction is not rolling back as expected when an exception occurs. I'm using a MySQL database and trying to insert data into two related tables. The first insert works fine, but if an exception is thrown during the second insert, the transaction does not roll back, leading to inconsistent data in the database. Here’s a simplified version of my code: ```php try { $pdo = new PDO('mysql:host=localhost;dbname=test', 'username', 'password'); $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); $pdo->beginTransaction(); $stmt1 = $pdo->prepare('INSERT INTO users (name) VALUES (:name)'); $stmt1->execute(['name' => 'John Doe']); // Simulating an scenario while inserting to orders $stmt2 = $pdo->prepare('INSERT INTO orders (user_id, product) VALUES (:user_id, :product)'); $stmt2->execute(['user_id' => $pdo->lastInsertId(), 'product' => 'Product A']); // This line will cause an exception due to a constraint violation $stmt2->execute(['user_id' => $pdo->lastInsertId(), 'product' => null]); // This should unexpected result! $pdo->commit(); } catch (Exception $e) { $pdo->rollBack(); echo 'Failed: ' . $e->getMessage(); } ``` When the exception occurs, I see the message, but the data for the first insert still remains in the `users` table. I've tried adjusting the behavior mode settings and ensuring that I'm catching the exception properly. Also, I confirmed that both tables are using InnoDB and have foreign key constraints set up correctly. Is there something I'm missing regarding transaction handling or behavior management in PHP 8.1? Any insights would be greatly appreciated. What am I doing wrong? I'd really appreciate any guidance on this. Thanks, I really appreciate it! I'm developing on macOS with Php. I'm open to any suggestions.