Câu 53: 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, $pass);$cmd = "SELECT * FROM users WHERE id = :id";$stmt = $pdo->prepare($cmd);$id = 3;$stmt->bindParam('id', $id);$stmt->execute();$stmt->bindColumn(3, $result);$row = $stmt->fetch(PDO::FETCH_BOUND);

1. A. The database will return no rows.
2. B. The value of $row will be an array.
3. C. The value of $result will be empty.
4. D. The value of $result will be '[email protected]'. — đáp án hiện tại