mysqli::close
The compactness of Lorenzo's code is admirable.
However, it is a good idea to also check $mysqli->affected_rows to make sure that the INSERT statement did not fail.
<?php
$result_query = @mysqli_query($query, $connect);
if (($result_query == false) &&
(mysqli_affected_rows($connect) == 0))
{
// verify the query executed completely and verify that it
// had impact on the table
$success = false;
// here also, the developer could choose to add a ROLLBACK
// statement
}
?>
mysqli::commit
mysqli_commit
(PHP 5)
mysqli::commit -- mysqli_commit — Valide la transaction courante
Description
Style orienté objet :
bool mysqli::commit
( void
)
Style procédural :
Valide la transaction courante pour la base de données spécifiée par le paramètre link .
Liste de paramètres
- link
-
Seulement en style procédural : Un identifiant de lien retourné par la fonction mysqli_connect() ou par la fonction mysqli_init()
Valeurs de retour
Cette fonction retourne TRUE en cas de succès, FALSE en cas d'échec.
Exemples
Exemple #1 Style orienté objet
<?php
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
/* Vérification de la connexion */
if (mysqli_connect_errno()) {
printf("Échec de la connexion : %s\n", mysqli_connect_error());
exit();
}
$mysqli->query("CREATE TABLE Language LIKE CountryLanguage Type=InnoDB");
/* Désactivation de l'autocommit */
$mysqli->autocommit(FALSE);
/* Insertion de quelques valeurs */
$mysqli->query("INSERT INTO Language VALUES ('DEU', 'Bavarian', 'F', 11.2)");
$mysqli->query("INSERT INTO Language VALUES ('DEU', 'Swabian', 'F', 9.4)");
/* Validation de la transaction */
$mysqli->commit();
/* Effacement de la table */
$mysqli->query("DROP TABLE Language");
/* Fermeture de la connexion */
$mysqli->close();
?>
Exemple #2 Style procédural
<?php
$link = mysqli_connect("localhost", "my_user", "my_password", "test");
/* Vérification de la connexion */
if (!$link) {
printf("Échec de la connexion : %s\n", mysqli_connect_error());
exit();
}
/* Désactivation de l'autocommit */
mysqli_autocommit($link, FALSE);
mysqli_query($link, "CREATE TABLE Language LIKE CountryLanguage Type=InnoDB");
/* Insertion de quelques valeurs */
mysqli_query($link, "INSERT INTO Language VALUES ('DEU', 'Bavarian', 'F', 11.2)");
mysqli_query($link, "INSERT INTO Language VALUES ('DEU', 'Swabian', 'F', 9.4)");
/* Validation de la transaction */
mysqli_commit($link);
/* Fermeture de la connexion */
mysqli_close($link);
?>
Voir aussi
- mysqli_autocommit() - Active ou désactive le mode auto-commit
- mysqli_rollback() - Annule la transaction courante
add a note
User Contributed Notesmysqli::commit
Bob Johnson
10-Sep-2009 05:42
10-Sep-2009 05:42
mvanlamz
31-Mar-2009 07:36
31-Mar-2009 07:36
Please note that calling mysqli::commit() will NOT automatically set mysqli::autocommit() back to 'true'.
This means that any queries following mysqli::commit() will be rolled back when your script exits.
Lorenzo - webmaster AT 4tour DOT it
11-Feb-2009 11:12
11-Feb-2009 11:12
This is an example to explain the powerful of the rollback and commit functions.
Let's suppose you want to be sure that all queries have to be executed without errors before writing data on the database.
Here's the code:
<?php
$all_query_ok=true; // our control variable
//we make 4 inserts, the last one generates an error
//if at least one query returns an error we change our control variable
$mysqli->query("INSERT INTO myCity (id) VALUES (100)") ? null : $all_query_ok=false;
$mysqli->query("INSERT INTO myCity (id) VALUES (200)") ? null : $all_query_ok=false;
$mysqli->query("INSERT INTO myCity (id) VALUES (300)") ? null : $all_query_ok=false;
$mysqli->query("INSERT INTO myCity (id) VALUES (100)") ? null : $all_query_ok=false; //duplicated PRIMARY KEY VALUE
//now let's test our control variable
$all_query_ok ? $mysqli->commit() : $mysqli->rollback();
$mysqli->close();
?>
hope to be helpful!