是否有与PDO :: FETCH_CLASS等效的INSERT或UPDATE？

Question

I have found the PDO::FETCH_CLASS very useful. My classes map to tables. I just do a

$query = $pdo->query("SELECT * FROM fixedTime WHERE
                  transmissionProgramID = '$transmissionProgramID'");
$query->setFetchMode(PDO::FETCH_CLASS, 'FixedTime');

and voila.

I would like to be able to do the reverse: ie instantiate an object load up the values to UPDATE or INSERT and once again voila.

Have looked but cannot see if this is available.

Answer 1

Well, yes. To some extent you can use something similar for insert or update.

But to achieve that, you have to learn how to use PDO properly . So, first we have to fix your select code:

$sql = "SELECT * FROM fixedTime WHERE transmissionProgramID = ?";
$stmt = $pdo->prepare($sql);
$stmt->execute([$transmissionProgramID]);
$stmt->setFetchMode(PDO::FETCH_CLASS, 'FixedTime');
$ftime = $stmt->fetch();

See - we are using prepared statements here, that you should be always using anyway. And at the same time that's the key for the [semi-]automation we can use with updates. Because with prepared statements you can use the object itself to provide values for the prepared query.

So, as long as you have object properties reflect table fields you can use a code like this:

$user = new stdClass();
$user->name = "foo";
$user->pass = "bar";

$sql = "INSERT INTO users VALUES (NULL, :name, :pass)";
$pdo->prepare($sql)->execute((array)$user);

But for the real automation you have to consider using an ORM , which is doing exactly what you're looking for. You can take a look at Eloquent for example. So, the code would be as simple and straightforward as

$ftime = new fixedTime;
$ftime->value = time();
$ftime->save();