PHP 7.0.6 Released

    mysqli::commit

    mysqli_commit

    (PHP 5, PHP 7)

    mysqli::commit -- mysqli_commit — Commits the current transaction

    Description

    Object oriented style

    bool mysqli::commit ([ int $flags [, string $name ]] )

    Procedural style

    bool mysqli_commit ( mysqli $link [, int $flags [, string $name ]] )

    Commits the current transaction for the database connection.

    Parameters

    link

    Procedural style only: A link identifier returned by mysqli_connect() or mysqli_init()

    flags

    A bitmask of MYSQLI_TRANS_COR_* constants.

    name

    If provided then COMMIT/*name*/ is executed.

    Return Values

    Returns TRUE on success or FALSE on failure.

    Changelog

    Version Description
    5.5.0 Added flags and name parameters.

    Examples

    Example #1 mysqli::commit() example

    Object oriented style

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

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

    $mysqli->query("CREATE TABLE Language LIKE CountryLanguage");

    /* set autocommit to off */
    $mysqli->autocommit(FALSE);

    /* Insert some values */
    $mysqli->query("INSERT INTO Language VALUES ('DEU', 'Bavarian', 'F', 11.2)");
    $mysqli->query("INSERT INTO Language VALUES ('DEU', 'Swabian', 'F', 9.4)");

    /* commit transaction */
    if (!$mysqli->commit()) {
        print(    "Transaction commit failed\n");
        exit();
    }

    /* drop table */
    $mysqli->query("DROP TABLE Language");

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

    Procedural style

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

    /* check connection */
    if (!$link) {
            printf("Connect failed: %s\n", mysqli_connect_error());
        exit();
    }

    /* set autocommit to off */
    mysqli_autocommit($link, FALSE);

    mysqli_query($link, "CREATE TABLE Language LIKE CountryLanguage");

    /* Insert some values */
    mysqli_query($link, "INSERT INTO Language VALUES ('DEU', 'Bavarian', 'F', 11.2)");
    mysqli_query($link, "INSERT INTO Language VALUES ('DEU', 'Swabian', 'F', 9.4)");

    /* commit transaction */
    if (!mysqli_commit($link)) {
        print(    "Transaction commit failed\n");
        exit();
    }

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

    See Also

    User Contributed Notes

    snchzantonio at gmail dot com
    2 years ago
    I never recomend to use the ? with only one value variant like: $var = expression ? $var  : other_value or $var = expression ? null  : other_value ,and php suport Exception catchin so,use it :)

    here my opinion abut lorenzo's post:

      <?php

    //variants combined

    $mysqli->autocommit(FALSE);

    try{

          $mysqli->query("INSERT INTO myCity (id) VALUES (100)") or throw new Exception('error!');

    // or we can use

          if( !$mysqli->query("INSERT INTO myCity (id) VALUES (200)"){
        throw new     Exception('error!');
      }

    }catch(     Exception $e ){
          $mysqli->rollback();
    }
    $mysqli->commit();

    ?>
    Lorenzo - webmaster AT 4tour DOT it
    7 years ago
    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!
    mvanlamz
    7 years ago
    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.
    NoMan2000
    11 months ago
    This is to clarify the Flags parameters and what they mean:

    MYSQLI_TRANS_COR_AND_CHAIN:

    Appends "AND CHAIN" to mysqli_commit or mysqli_rollback.

    MYSQLI_TRANS_COR_AND_NO_CHAIN:

    Appends "AND NO CHAIN" to mysqli_commit or mysqli_rollback.

    MYSQLI_TRANS_COR_RELEASE:

    Appends "RELEASE" to mysqli_commit or mysqli_rollback.

    MYSQLI_TRANS_COR_NO_RELEASE:

    Appends "NO RELEASE" to mysqli_commit or mysqli_rollback.

    To clarify those options:

    The AND CHAIN clause causes a new transaction to begin as soon as the current one ends, and the new transaction has the same isolation level as the just-terminated transaction.

    The RELEASE clause causes the server to disconnect the current client session after terminating the current transaction.
    Bob Johnson
    6 years ago
    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
                        }
    ?>
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