[Andreas]

PHP Code:

<?php
require_once('./global.php');
require_once('./includes/class_dm.php');
require_once('./includes/class_dm_threadpost.php');

$postdm = new vB_DataManager_Post($vbulletin, ERRTYPE_STANDARD);

$bythreadid = '4375';

$threadinfo = fetch_threadinfo($bythreadid);
$foruminfo = fetch_foruminfo($threadinfo['forumid']);
$postdm->set_info('forum', $foruminfo);
$postdm->set_info('thread', $threadinfo);  

$postdm->set('threadid', $bythreadid);
$postdm->set('username', 'testing');
$postdm->set('pagetext', 'This is a test');
$postdm->set('allowsmilie', 1);
$postdm->set('visible', 1);
$postdm->set('dateline', TIMENOW);
$postdm->save();
unset($postdm);
?>

You should never call do_set() directly, also if you are making a post for a guest don't set the userid.