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PHP 8.2 - implementing PDO Not Throwing Exceptions on scenarios Transactions

👀 Views: 24 đŸ’Ŧ Answers: 1 📅 Created: 2025-06-14
php pdo mysql exceptions PHP

I'm currently using PHP 8.2 along with PDO for database transactions, but I'm working with a strange scenario where exceptions aren't being thrown as expected during transaction failures. My code is structured as follows: ```php try { $pdo->beginTransaction(); $stmt = $pdo->prepare('UPDATE users SET balance = balance - ? WHERE id = ?'); $stmt->execute([100, 1]); // Deduct from user 1 $stmt = $pdo->prepare('UPDATE users SET balance = balance + ? WHERE id = ?'); $stmt->execute([100, 2]); // Add to user 2 // Simulate a failure if (someConditionThatFails()) { throw new Exception('Simulated failure'); } $pdo->commit(); } catch (Exception $e) { $pdo->rollBack(); echo 'Transaction failed: ' . $e->getMessage(); } ``` The scenario I'm working with is that even when `someConditionThatFails()` evaluates to true and throws an exception, the transaction is still committed successfully, and I see no behavior messages. I have checked that behavior mode for PDO is set to `PDO::ERRMODE_EXCEPTION`: ```php $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); ``` However, it seems like exceptions are not propagating as I would expect. I also verified that my database user has the necessary permissions for the operations being performed. I've tried wrapping the entire transaction logic in a single try-catch block, but that didn't help either. Has anyone faced this scenario before, or know what might be going wrong? Any insights would be greatly appreciated.