PDO
PHP-Handbuch

PDO::commit

Commits a transaction

Beschreibung

public bool PDO::commit ( void )

Commits a transaction, returning the database connection to autocommit mode until the next call to PDO::beginTransaction starts a new transaction.

Rückgabewerte

Gibt bei Erfolg TRUE zurück. Im Fehlerfall wird FALSE zurückgegeben.

Fehler/Exceptions

Throws a PDOException if there is no active transaction.

Hinweis: An exception is raised even when the PDO::ATTR_ERRMODE attribute is not PDO::ERRMODE_EXCEPTION.

Beispiele

Beispiel #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 */
?>

Beispiel #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 */
?>

Hinweis: 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.

Siehe auch