PDO transactions + prepared statemes

transtatement.php

$dbh->beginTransaction();
$statement = $dbh->prepare("INSERT INTO TABLE (field1, field2) VALUES (:v1, :v2)");
$stmt->bindParam(':v1', $value1);
$stmt->bindParam(':v2', $value2);

for ($i = 0; $i < 300; $i++) {
    $value1 = 'value';
    $value2 = 'another value';
    $stmt->execute();
}

$dbh->commit();

//On error should call $dbh->rollback();