How do you know if a PDO request is successful?

Question

PHP

How to understand if the request to the database was successful, PDO?
execute() - always returns true or an exception...
mb RowCount() > 0 - lucky, right?

Answer 1

try {
    $res->execute();
} catch (Exception $e) {
    die("Ошибка");
}

// нет ошибки...

Answer 2

UPDATE table SET field='new_value' WHERE field='old_value'

If there are no rows in the table where field='old_value', then RowCount() will return 0 even if the query was successful.