Keep in mind this bug: https://bugs.php.net/bug.php?id=66528
you could not rely on commit() return value while using MySql
PDO::commit
(PHP 5 >= 5.1.0, PHP 7, PECL pdo >= 0.1.0)
PDO::commit — Commits a transaction
Descrierea
public PDO::commit
(
) : bool
Commits a transaction, returning the database connection to autocommit mode until the next call to PDO::beginTransaction() starts a new transaction.
Valorile întoarse
Întoarce valoarea true în cazul
succesului sau false în cazul eșecului.
Erori/Excepții
Throws a PDOException if there is no active transaction.
Notă: O excepție este emisă chiar atunci când atributul
PDO::ATTR_ERRMODEnu are valoareaPDO::ERRMODE_EXCEPTION.
Exemple
Example #1 Committing a basic transaction
<?php
/* Begin a transaction, turning off autocommit */
$dbh->beginTransaction();
/* Insert multiple records on an all-or-nothing basis */
$sql = 'INSERT INTO fruit
(name, colour, calories)
VALUES (?, ?, ?)';
$sth = $dbh->prepare($sql);
foreach ($fruits as $fruit) {
$sth->execute(array(
$fruit->name,
$fruit->colour,
$fruit->calories,
));
}
/* Commit the changes */
$dbh->commit();
/* Database connection is now back in autocommit mode */
?>
Example #2 Committing a DDL transaction
<?php
/* Begin a transaction, turning off autocommit */
$dbh->beginTransaction();
/* Change the database schema */
$sth = $dbh->exec("DROP TABLE fruit");
/* Commit the changes */
$dbh->commit();
/* Database connection is now back in autocommit mode */
?>
Notă: Not all databases will allow transactions to operate on DDL statements: some will generate errors, whereas others (including MySQL) will automatically commit the transaction after the first DDL statement has been encountered.
A se vedea și
- PDO::beginTransaction() - Initiates a transaction
- PDO::rollBack() - Rolls back a transaction
- Transactions and auto-commit
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