Câu 54: 200-550: Zend Certified PHP Engineer

Consider the following table data and PHP code. What is the outcome?Table data (table name "users" with primary key "id"):id name email------- ----------- -------------------1 anna [email protected]2 betty [email protected]3 clara [email protected]5 sue [email protected]PHP code (assume the PDO connection is correctly established):$dsn = 'mysql:host=localhost;dbname=exam';$user = 'username';$pass = '********';$pdo = new PDO($dsn, $user, $pass);try {$cmd = "INSERT INTO users (id, name, email) VALUES (:id, :name, :email)";$stmt = $pdo->prepare($cmd);$stmt->bindValue('id', 1);$stmt->bindValue('name', 'anna');$stmt->bindValue('email', '[email protected]');$stmt->execute();echo "Success!";} catch (PDOException $e) {echo "Failure!";throw $e;}

1. A. The INSERT will succeed and the user will see the "Success!" message.
2. B. The INSERT will fail because of a primary key violation, and the user will see the "Success!" message. — đáp án hiện tại
3. C. The INSERT will fail because of a primary key violation, and the user will see a PDO warning message.
4. D. The INSERT will fail because of a primary key violation, and the user will see the "Failure!" message.