For PHP<5.5:
mysqli_query($db, "START TRANSACTION");
mysqli::begin_transaction
mysqli_begin_transaction
(PHP 5 >= 5.5.0, PHP 7)
mysqli::begin_transaction -- mysqli_begin_transaction — Starts a transaction
Descrizione
Stile orientato agli oggetti (method):
public bool mysqli::begin_transaction
([ int
$flags
[, string $name
]] )Stile procedurale:
Begins a transaction. Requires the InnoDB engine (it is enabled by default). For additional details about how MySQL transactions work, see » http://dev.mysql.com/doc/mysql/en/commit.html.
Elenco dei parametri
-
link -
Solo nello stile procedurale: un identificatore restituito da mysqli_connect() o mysqli_init()
-
flags -
Valid flags are:
-
MYSQLI_TRANS_START_READ_ONLY: Start the transaction as "START TRANSACTION READ ONLY". Requires MySQL 5.6 and above. -
MYSQLI_TRANS_START_READ_WRITE: Start the transaction as "START TRANSACTION READ WRITE". Requires MySQL 5.6 and above. -
MYSQLI_TRANS_START_WITH_CONSISTENT_SNAPSHOT: Start the transaction as "START TRANSACTION WITH CONSISTENT SNAPSHOT".
-
-
name -
Savepoint name for the transaction.
Valori restituiti
Restituisce TRUE in caso di successo, FALSE in caso di fallimento.
Esempi
Example #1 $mysqli->begin_transaction() example
Stile orientato agli oggetti
<?php
$mysqli = new mysqli("127.0.0.1", "my_user", "my_password", "sakila");
if ($mysqli->connect_errno) {
printf("Connect failed: %s\n", $mysqli->connect_error);
exit();
}
$mysqli->begin_transaction(MYSQLI_TRANS_START_READ_ONLY);
$mysqli->query("SELECT first_name, last_name FROM actor");
$mysqli->commit();
$mysqli->close();
?>
Stile procedurale
<?php
$link = mysqli_connect("127.0.0.1", "my_user", "my_password", "sakila");
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
mysqli_begin_transaction($link, MYSQLI_TRANS_START_READ_ONLY);
mysqli_query($link, "SELECT first_name, last_name FROM actor LIMIT 1");
mysqli_commit($link);
mysqli_close($link);
?>
Vedere anche:
- mysqli_autocommit() - Turns on or off auto-committing database modifications
- mysqli_commit() - Commits the current transaction
- mysqli_rollback() - Rolls back current transaction
add a note
