Database and SQL Learning Mode

Given the following table called "names" ..

pos name email
1 anna anna@mail.com
2 betty bettty@mail.com
3 clara clara@mail.com

what is the value of $name at the end of the following PHP code (Assume PDO connection is valid)

$pdo = new PDO(...);
$name = null;
$stmt = $pdo->prepare('select * from names where name = :name');
$stmt->bindValue(':name', 'anna');
$stmt->execute();
while ($row = $stmt->fetch()) {
    var_dump($name);
}
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