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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.18 $ -->
<refentry id="function.mysqli-autocommit">
<refnamediv>
<refname>mysqli_autocommit</refname>
<refname>mysqli->autocommit</refname>
<refpurpose>Turns on or off auto-commiting database modifications</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<para>Procedural style:</para>
<methodsynopsis>
<type>bool</type><methodname>mysqli_autocommit</methodname>
<methodparam><type>mysqli</type><parameter>link</parameter></methodparam>
<methodparam><type>bool</type><parameter>mode</parameter></methodparam>
</methodsynopsis>
<para>Object oriented style (method)</para>
<classsynopsis>
<ooclass><classname>mysqli</classname></ooclass>
<methodsynopsis>
<type>bool</type><methodname>autocommit</methodname>
<methodparam><type>bool</type><parameter>mode</parameter></methodparam>
</methodsynopsis>
</classsynopsis>
<para>
<function>mysqli_autocommit</function> is used to turn on or off auto-commit mode
on queries for the database connection represented by the <parameter>link</parameter>
object.
</para>
<note>
<para>
<function>mysqli_autocommit</function> doesn't work with non transactional
table types (like MyISAM or ISAM).
</para>
<para>
To determine the current state of autocommit use the SQL command
'SELECT @@autocommit'.
</para>
</note>
</refsect1>
<refsect1>
&reftitle.returnvalues;
<para>
&return.success;
</para>
</refsect1>
<refsect1>
&reftitle.seealso;
<para>
<function>mysqli_commit</function>&listendand;
<function>mysqli_rollback</function>.
</para>
</refsect1>
<refsect1>
&reftitle.examples;
<example>
<title>Object oriented style</title>
<programlisting role="php">
<![CDATA[
<?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();
?>
]]>
</programlisting>
</example>
<example>
<title>Procedural style</title>
<programlisting role="php">
<![CDATA[
<?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);
?>
]]>
</programlisting>
</example>
&example.outputs;
<screen>
<![CDATA[
Autocommit is 1
]]>
</screen>
</refsect1>
</refentry>
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