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PHP mysqli: autocommit() function

mysqli_autocommit() function / mysqli::autocommit

The mysqli_autocommit() function / mysqli::autocommit turns on or off the auto-commit mode on queries. auto-commit is a property which saves the changes made to database automatically if the mode is on.

Syntax:

Object oriented style

bool mysqli::autocommit ( bool $mode )

Procedural style

bool mysqli_autocommit ( mysqli $link , bool $mode )

Parameter:

Name Description Required/Optional
link A link identifier returned by mysqli_connect() or mysqli_init(). Required
mode Whether to turn on auto-commit or not. Required

Usage: Procedural style

mysqli_autocommit(connection,mode);

Parameter:

Name Description Required/Optional
connection Specifies the MySQL connection to use. Required
mode FALSE turns auto-commit off. TRUE turns auto-commit on (and commits any waiting queries) Required

Return value:

Returns TRUE on success or FALSE on failure.

Version: PHP 5, PHP 7

Example of object oriented style:

<?php
$mysqli = new mysqli("localhost", "user1", "datasoft123", "hr");

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();
?>

Output:

Autocommit is 1

Example of procedural style:

<?php
$link = mysqli_connect("localhost", "user1", "datasoft123", "hr");

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);
?>

Output:

Autocommit is 1

See also

PHP Function Reference

Previous: affected_rows
Next: begin_transaction



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PHP: Tips of the Day

To use the constant simply use its name:

Example:

if (EARTH_IS_FLAT) {
 print "Earth is flat";
}
print APP_ENV_UPPERCASE;

Output:



or if you don't know the name of the constant in advance, use the constant function:


// this code is equivalent to the above code
$const1 = "EARTH_IS_FLAT";
$const2 = "APP_ENV_UPPERCASE";
if (constant($const1)) {
 print "Earth is flat";
}
print constant($const2);



Output:




 


























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