PDO, mysql, transactions and table locking

Question

For fun I am replacing the mysqli extension in my app with PDO.

Once in awhile I need to use transactions + table locking.

In these situations, according to

Answer 1

When you call PDO::beginTransaction(), it turns off auto commit.

So you can do:

$db->beginTransaction();
$db->exec('LOCK TABLES t1, t2, ...');
# do something with tables
$db->commit();
$db->exec('UNLOCK TABLES');

After a commit() or rollBack(), the database will be back in auto commit mode.