我创建了简单的 ajax 投票插件，它工作正常.. 直到我开始在 conf.php 文件中使用 joomla 方法。下面的文件是带有简单 php db 查询的 conf.php，如果我放在这里例如 $dbb = JRequest::getDbo(); 它停止工作..或任何其他 joomla 方法。我无法理解这里有什么问题？
$.ajax
({
type: "POST",
url: "plugins/system/ratingx/conf.php",
data: dataString,
cache: false,
success: function(html)
{
conf.php：
<?php
define( '_JEXEC', 1) or die;
defined( '_JEXEC' ) or die;
$mysql_hostname = "localhost";
$mysql_user = "px";
$mysql_password = "px";
$mysql_database = "jum";
$bd = mysql_connect($mysql_hostname, $mysql_user, $mysql_password)
or die("Opps some thing went wrong");
mysql_select_db($mysql_database, $bd) or die("Opps some thing went wrong");
if($_POST['id'])
{
$id=mysql_real_escape_string($_POST['id']);
$name=mysql_real_escape_string($_POST['name']);
mysql_query("update messages set $name=$name+1 where id='$id'");
$result=mysql_query("select up,down from messages where id='$id'");
$row=mysql_fetch_array($result);
$up_value=$row['up'];
$down_value=$row['down'];
$total=$up_value+$down_value;
$up_per=($up_value*100)/$total;
$down_per=($down_value*100)/$total;
?>
<div style="margin-bottom:10px">
<b>Ratings for this blog</b> ( <?php echo $total; ?> total)
</div>
<table width="700px">
<tr>
<td width="30px"></td>
<td width="60px"><?php echo $up_value; ?></td>
<td width="600px"><div id="greebar" style="width:<?php echo $up_per; ?>%"></div></td>
</tr>
<tr>
<td width="30px"></td>
<td width="60px"><?php echo $down_value; ?></td>
<td width="600px"><div id="redbar" style="width:<?php echo $down_per; ?>%"></div></td>
</tr>
</table>
<?php
}