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HOME > PHP Manual > mysqli::autocommit - Turns on or off auto-commiting database modifications

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mysqli::autocommit

mysqli_autocommit

(PHP 5)

mysqli::autocommit -- mysqli_autocommit — Turns on or off auto-commiting database modifications

Description

Object oriented style (method)

bool mysqli::autocommit ( bool $mode )

Procedural style:

bool mysqli_autocommit ( mysqli $link , bool $mode )

Turns on or off auto-commit mode on queries for the database connection.

To determine the current state of autocommit use the SQL command SELECT @@autocommit.

Parameters

link: Procedural style only: A link identifier returned by mysqli_connect() or mysqli_init()
mode: Whether to turn on auto-commit or not.

Return Values

Returns TRUE on success or FALSE on failure.

Notes

Note: This function doesn't work with non transactional table types (like MyISAM or ISAM).

Examples

Example #1 Object oriented style


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

if (mysqli_connect_errno()) {
    printf("Connect failed: %s\n", mysqli_connect_error());
    exit();
}

/* turn autocommit on */
$mysqli->autocommit(TRUE);

if ($result = $mysqli->query("SELECT @@autocommit")) {
    $row = $result->fetch_row();
    printf("Autocommit is %s\n", $row[0]);
    $result->free();
}

/* close connection */
$mysqli->close();
?>

Example #2 Procedural style


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

if (!$link) {
    printf("Can't connect to localhost. Error: %s\n", mysqli_connect_error());
    exit();
}

/* turn autocommit on */
mysqli_autocommit($link, TRUE);

if ($result = mysqli_query($link, "SELECT @@autocommit")) {
    $row = mysqli_fetch_row($result);
    printf("Autocommit is %s\n", $row[0]);
    mysqli_free_result($result);
}

/* close connection */
mysqli_close($link);
?>

The above example will output:

Autocommit is 1

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