我正在更新我的插件，以便与Wordpress 3.5版兼容。以下是我的重要插件文件：

按标题对\\u SearchResult\\u排序。php：

<?php
if(!class_exists(\'Class_Sortsearchresults\'))
{
require_once(\'Class_Sortsearchresults.php\');
}
if(!isset($Class_Sortsearchresults))
{
$Class_Sortsearchresults = new Class_Sortsearchresults;
}
?>

Class\\u排序搜索结果。php：

<?php
class Class_Sortsearchresults
{
function __construct()
{

    //Register activation hook
       register_activation_hook(__FILE__,array(&$this,\'sortresult_install\'));

    //Add menu hook
    add_action( \'admin_menu\', array(&$this,\'sort_searchresults_menu\'));

    //Update function hook
    add_action(\'plugins_loaded\', array(&$this,\'sortsearchtitle_update_db_check\'));

    //Register deactivation hook
    register_deactivation_hook(__FILE__, array(&$this,\'sortresult_uninstall\'));

    //Run the search function
    add_action(\'pre_get_posts\',array(&$this,\'sort_searchresult_by_title\'));

}

function sortresult_uninstall() 
{

    //This function is not working or executed

    global $wpdb;       
    $sortsearchtitle_db_version = \'1.0\';
    $table = $wpdb->prefix."sortsearchresult";
    $wpdb->query("DROP TABLE IF EXISTS $table");
    delete_option(\'sortsearchtitle_db_version\');
}

function sortresult_install()
{
    //install function
}   

function sort_searchresults_menu()
{

    //function for creating menu

}

function sortsearchtitle_update_db_check()
{

    //function for update

    }

function settings_page()
{
    //function for settings form
}

function sortingguide($opt_val)
{

    //sorting options

}

function sort_searchresult_by_title($k)
{
    //function to run customized search

}

}
?>

看来除了卸载功能外，我一切都很好。有什么线索说明这不起作用吗？谢谢

<?php
//if uninstall not called from WordPress exit
if ( !defined( \'WP_UNINSTALL_PLUGIN\' ) )
    exit ();

global $wpdb;       
$sortsearchtitle_db_version = \'1.0\';
$table = $wpdb->prefix."sortsearchresult";
$wpdb->query("DROP TABLE IF EXISTS $table");
delete_option(\'sortsearchtitle_db_version\');