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($link, TRUE);
if ($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);
?>
上例将输出：
Autocommit is 1
