<?php
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");

/* Vérification de la connexion */
if (mysqli_connect_errno()) {
    printf("Echec de la connexion : %s\n", mysqli_connect_error());
    exit();
}

/* Désactive l'auto-commit */
$mysqli->autocommit(FALSE);

$mysqli->query("CREATE TABLE myCity LIKE City");
$mysqli->query("ALTER TABLE myCity Type=InnoDB");
$mysqli->query("INSERT INTO myCity SELECT * FROM City LIMIT 50");

/* Validation */
$mysqli->commit();

/* Effacement de toutes les lignes */
$mysqli->query("DELETE FROM myCity");

if ($result = $mysqli->query("SELECT COUNT(*) FROM myCity")) {
    $row = $result->fetch_row();
    printf("%d lignes dans la table myCity.\n", $row[0]);
    /* Libération des résultats */
    $result->close();
}

/* Annulation */
$mysqli->rollback();

if ($result = $mysqli->query("SELECT COUNT(*) FROM myCity")) {
    $row = $result->fetch_row();
    printf("%d lignes dans la table myCity (après annulation).\n", $row[0]);
    /* Libération des résultats */
    $result->close();
}

/* Effacement de la table myCity */
$mysqli->query("DROP TABLE myCity");

$mysqli->close();
?>

<?php
$link = mysqli_connect("localhost", "my_user", "my_password", "world");

/* Vérification de la connexion */
if (mysqli_connect_errno()) {
    printf("Echec de la connexion : %s\n", mysqli_connect_error());
    exit();
}

/* Désactive l'auto-commit */
mysqli_autocommit($link, FALSE);

mysqli_query($link, "CREATE TABLE myCity LIKE City");
mysqli_query($link, "ALTER TABLE myCity Type=InnoDB");
mysqli_query($link, "INSERT INTO myCity SELECT * FROM City LIMIT 50");

/* Validation */
mysqli_commit($link);

/* Effacement de toutes les lignes */
mysqli_query($link, "DELETE FROM myCity");

if ($result = mysqli_query($link, "SELECT COUNT(*) FROM myCity")) {
    $row = mysqli_fetch_row($result);
    printf("%d lignes dans la table myCity.\n", $row[0]);
    /* Libération des résultats */
    mysqli_free_result($result);
}

/* Annulation */
mysqli_rollback($link);

if ($result = mysqli_query($link, "SELECT COUNT(*) FROM myCity")) {
    $row = mysqli_fetch_row($result);
    printf("%d lignes dans le table myCity (après annulation).\n", $row[0]);
    /* Libération des résultats */
    mysqli_free_result($result);
}

/* Effacement de la table myCity */
mysqli_query($link, "DROP TABLE myCity");

mysqli_close($link);
?>