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mysqli_autocommit

mysqli->autocommit()

(PHP 5)

mysqli->autocommit() — Turns on or off auto-commiting database modifications

说明

Procedural style:

bool mysqli_autocommit ( mysqli $link , bool $mode )

Object oriented style (method)

mysqli
bool autocommit ( 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.

参数

link

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

mode

Whether to turn on auto-commit or not.

返回值

如果成功则返回 TRUE,失败则返回 FALSE

注释

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

范例

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($linkTRUE);

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);
?>

上例将输出:

Autocommit is 1

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