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
Previous: affected_rows
Next: begin_transaction
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