ODBC 函数
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odbc_autocommit

(PHP 4, PHP 5)

odbc_autocommit — Toggle autocommit behaviour

说明

mixed odbc_autocommit ( resource $connection_id [, bool $OnOff = false ] )

Toggles autocommit behaviour.

By default, auto-commit is on for a connection. Disabling auto-commit is equivalent with starting a transaction.

参数

connection_id

ODBC 连接标识符，详见 odbc_connect()。

OnOff

If OnOff is TRUE, auto-commit is enabled, if it is FALSE auto-commit is disabled.

返回值

Without the OnOff parameter, this function returns auto-commit status for connection_id. Non-zero is returned if auto-commit is on, 0 if it is off, or FALSE if an error occurs.

If OnOff is set, this function returns TRUE on success and FALSE on failure.

参见

ODBC 函数
在线手册：中文 英文
PHP手册
PHP手册 - N: Toggle autocommit behaviour

用户评论:

alvaro at demogracia dot com (06-Aug-2008 09:18)

If you are using persistent connections (odbc_pconnect rather than odbc_connect) the next script that reuses the connection will inherit your changes to autocommit.

Orgied - info at orgied dot com (06-Apr-2005 07:58)

Hi (i'm belgian then sorry for my english).

I think you can do more simple to check the errors :

$conn = odbc_connect($odbc,$user,$password)
    or die($error);

odbc_autocommit($conn, FALSE);

odbc_exec($conn, $query1);
odbc_exec($conn, $query2);

if (!odbc_error())
      odbc_commit($conn);
else
      odbc_rollback($conn);

odbc_close($conn);

I'm not sure it's better to use odbc_error() than
odbc_error($conn). It seems to be the same result.

Ron (21-Aug-2004 07:51)

using autocommit functionality to rollback transactions in a "workspace"

<?php
$conn = odbc_connection("$DSN","USER","PASS");
//turns off autocommit
odbc_autocommit($conn,FALSE);

$query1 = "some SQL";
$query2 = "some more SQL";

$ErrorCount = 0;
//if odbc_exec fails it will increment the $ErrorCount
$result = odbc_exec($conn,$query1) or $ErrorCount++;
$result2 = odbc_exec($conn,$query2) or $ErrorCount++;

//checking for errors, commit if none, rollback else
if ($Errorcount == 0){
    odbc_commit($conn);
    echo "transaction successful";
}
else{
    odbc_rollback($conn);
    echo "there were errors processing the transaction.
    No changes were made to the database";
}

odbc_close($conn);

?>

Cheers,
Ron

Joe (26-May-2004 05:01)

It seems that example made by andrea dot galli at acotel dot com works exactly the contrary.

It sets autocommit OFF and NOT ON like it's written inside note!

JRog (25-Jun-2003 09:30)

If a transaction is started (autocommit disabled) while there is an active result id on the connection, odbc_autocommit will post a warning (Cannot set autocommit).  Use odbc_free_result to clear the result id's or start the transaction before you execute the SQL.

andrea dot galli at acotel dot com (28-Apr-2003 05:48)

Example: set autocommit on

<?php

   $Link_ID = odbc_connect("DSN", "user", "pass");

    $Return = odbc_autocommit($Link_ID, FALSE);

?>

alonsoalonsocr at yahoo dot com (08-Oct-2001 11:09)

When used in a odbc_fetch loop your selected resultset is lost and loop ends.