404当需要来自Yii的wordpress文件时使用spl_autoload

I am using Yii 1.1 in a project where I need to fetch the top blog titles from a wordpress site. I am using the following code for this. On using this however, I am getting 404 for all pages when this layout is being used. I am not able to understand how this is affecting the final status code. Commenting out this specific block removes all error.

I was actually okay with the 404 till it start messing with some vital javscript files.

    spl_autoload_unregister(array('YiiBase','autoload'));
    require_once('./blog/wp-blog-header.php');
    spl_autoload_register(array('YiiBase','autoload'));
    $recent_posts = wp_get_recent_posts(array(
        'numberposts' => 10,
        'post_type'=>'post',
        'post_status'=>'publish'
        ));
    foreach($recent_posts as $post) {
        echo '<li><a href="', get_permalink($post['ID']), '">', $post['post_title'], '</a></li>';
    }

The file ./blog/wp-blog-header.php exists and I am able to list down the blog articles using the above code. It is just the status code that is causing trouble.