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PHP 8.2 - implementing PDO and Multi-Statement Execution Returning Empty Result Set

👀 Views: 462 đŸ’Ŧ Answers: 1 📅 Created: 2025-06-24
php pdo mysql sql

I'm relatively new to this, so bear with me. I'm working with a question when trying to execute multiple SQL statements using PDO in PHP 8.2. My goal is to insert a record and retrieve the last inserted ID in a single transaction. However, when I prepare and execute the statements, I'm getting an empty result set despite expecting the last inserted ID to be returned. Here's the code I'm using: ```php try { $pdo = new PDO('mysql:host=localhost;dbname=testdb', 'username', 'password'); $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); $pdo->beginTransaction(); $stmt1 = $pdo->prepare("INSERT INTO users (name, email) VALUES (:name, :email);"); $stmt1->execute([':name' => 'John Doe', ':email' => 'john@example.com']); // Attempting to get the last inserted ID $lastId = $pdo->lastInsertId(); // Trying to execute another query $stmt2 = $pdo->prepare("SELECT * FROM users WHERE id = :id;"); $stmt2->execute([':id' => $lastId]); $result = $stmt2->fetchAll(PDO::FETCH_ASSOC); var_dump($result); $pdo->commit(); } catch (PDOException $e) { echo 'behavior: ' . $e->getMessage(); $pdo->rollBack(); } ``` When I run this code, the `$result` variable is empty, and I don't see any errors being thrown. I've confirmed that the insertion is happening correctly because the record is present in the database after execution. I've also tried checking the PDO attribute settings, and they seem to be correct. Any insights on why the SELECT query might be returning an empty result set after the INSERT operation? Am I missing something in my transaction management or execution logic?