[kh99]

You have a few typos in there. Try this:

if ($vbulletin->options['enable'] AND (THIS_SCRIPT=='newthread'))
{
	if (in_array($forumid, explode(",", $vbulletin->options['enable_forumid'])))
	{
		$getinfos = $vbulletin->db->query_read("
			SELECT postuserid, threadid, postdate 
			FROM " . TABLE_PREFIX . "testting
			WHERE postuserid = " . $vbulletin->userinfo['userid'] . "
			GROUP BY threadid
			ORDER BY threadid ASC
		");	
		$count = $vbulletin->db->num_rows($getinfos);
		if ($count > 0)
		{
			$mytest = '<option value="0" selected="selected">0</option>';
			while ($getinfo = $vbulletin->db->fetch_array($get_infos))
			{
				$mytest = '<option value="' . $getinfo[threadid] . '">'. $getinfo[threadid] . '</option>';
			}
		}
			$templater = vB_Template::create('test_newthread');
				$templater->register('mytest', $mytest);
			$out .= $templater->render();
		
		$vbulletin->templatecache['newthread'] = str_replace('\'' . $messagearea . '\'', '<div class="blockrow">' . $out . '</div>\'' . $messagearea . '\'', $vbulletin->templatecache['newthread']);
	}
}