获取joomla post图像

我的英文写得不好。我使用joomla 2.5，我想转换为wprd按。

我为这个动作编写了一个插件，我能够传输内容和类别。

但是我无法将内容的图像从joomla转移到wp!这是我的代码:

<?php
require_once 'wp-blog-header.php';
require_once 'wp-admin/includes/taxonomy.php';
header('Content-Type: text/html; charset=UTF-8');
global $wpdb;
$wp_cat_id = array('11' => '74', '12' => '174', ....);
$con = mysql_connect("localhost", "....", "...") or die(mysql_error());
$db = mysql_select_db('tebroomc_tebnew');
mysql_query("set character_set_results='utf8'");
$result = mysql_query("SELECT * FROM `bme5k_categories` WHERE `parent_id` = 1 AND `level` = 1 AND `published` != -2 AND `metadesc` != ''") or die(mysql_error());
while ($root_cat = mysql_fetch_object($result)) {
    $result2 = mysql_query("SELECT * FROM `bme5k_categories` WHERE `parent_id` =" . $root_cat->id . " AND `level` = 2 AND `published` != -2") or die(mysql_error());
    $my_cat = $root_cat->id;
//    $wp_root_cat_id = wp_insert_category($my_cat);
    $root_cat_posts_sql = mysql_query("SELECT * FROM `bme5k_content` WHERE `catid` = " . $root_cat->id . " ") or die(mysql_error());
    if (mysql_num_rows($root_cat_posts_sql) > 0) {
        while ($posts = mysql_fetch_object($root_cat_posts_sql)) {
            $my_post = array(
                'post_title' => $posts->title,
                'post_content' => $posts->introtext,
                'post_status' => 'publish',
                'post_author' => 1,
                'post_category' => array($wp_cat_id[$my_cat]),
                'post_date'      =>$posts->publish_up
            );
            wp_insert_post($my_post);
        }
    }
    while ($sub_cat = mysql_fetch_object($result2)) {
        $my_cat = $sub_cat->id;
        $sub_cat_posts_sql = mysql_query("SELECT * FROM `bme5k_content` WHERE `catid` = " . $sub_cat->id . " ") or die(mysql_error());
        if (mysql_num_rows($sub_cat_posts_sql) > 0) {
            while ($posts = mysql_fetch_object($sub_cat_posts_sql)) {
                $my_post = array(
                    'post_title' => $posts->title,
                    'post_content' => $posts->introtext,
                    'post_status' => 'publish',
                    'post_author' => 1,
                    'post_category' => array($wp_cat_id[$my_cat]),
                    'post_date'      =>$posts->publish_up
                );
                wp_insert_post($my_post);
            }
        }
    }
}

我把这个代码在word press根站点。现在我想知道，当我从joomla读到一个内容，我已经把内容转移到word press，我怎么能得到那个帖子的图像?