Create new threads from running SQL query

[koon85]

I try to use build_new_post function but nothing has happen with this code below. The main code I get from Staff Application System. Can anyone help me to know why it doesn't work?
Thanks a lot!

PHP Code:

<?php

// ####################### SET PHP ENVIRONMENT ########################### 
error_reporting(E_ALL & ~E_NOTICE); 
// ######################### REQUIRE BACK-END ############################ 
require_once('./global.php');

// Build Messages
        $message2 = "This is a test only.";

// Make a new thread
        require_once(DIR . '/includes/functions_newpost.php');

        $forumid = 1;
        $user_id = 56;
        $username = 'TOEFL';
        $target_foruminfo = fetch_foruminfo($forumid);
        $newpost = array(
            'userid' => $user_id,
            'username' => $username,
            'message' =>  $message2,
            'title' => 'This is a test only',
            'poststarttime' => time(),
            'emailupdate' => 0
        );

        build_new_post('thread', $target_foruminfo, array(), array(), $newpost, $errors);

// Fix forums counters
        require_once('./includes/functions_databuild.php'); 
        build_forum_counters($forumid);
?>

--------------- Added [DATE]1251067771[/DATE] at [TIME]1251067771[/TIME] ---------------

When I run it again, VBB display a duplicate post and maybe the post has been create, but why it doesn't display?