wordpress分类目录去除category

/*  
*去除分类标志代码
*/
add_action( 'load-themes.php',  'no_category_base_refresh_rules');   
add_action('created_category', 'no_category_base_refresh_rules');   
add_action('edited_category', 'no_category_base_refresh_rules');   
add_action('delete_category', 'no_category_base_refresh_rules');   
function no_category_base_refresh_rules() {       
    global $wp_rewrite;   
    $wp_rewrite -> flush_rules();   
}   
  
// register_deactivation_hook(__FILE__, 'no_category_base_deactivate');   
// function no_category_base_deactivate() {   
//  remove_filter('category_rewrite_rules', 'no_category_base_rewrite_rules');   
//  // We don't want to insert our custom rules again   
//  no_category_base_refresh_rules();   
// }   
  
// Remove category base   
add_action('init', 'no_category_base_permastruct');   
function no_category_base_permastruct() {   
    global $wp_rewrite, $wp_version;   
    if (version_compare($wp_version, '3.4', '<')) {   
        // For pre-3.4 support   
        $wp_rewrite -> extra_permastructs['category'][0] = '%category%';   
    } else {   
        $wp_rewrite -> extra_permastructs['category']['struct'] = '%category%';   
    }   
}   
  
// Add our custom category rewrite rules   
add_filter('category_rewrite_rules', 'no_category_base_rewrite_rules');   
function no_category_base_rewrite_rules($category_rewrite) {   
    //var_dump($category_rewrite); // For Debugging   
  
    $category_rewrite = array();   
    $categories = get_categories(array('hide_empty' => false));   
    foreach ($categories as $category) {   
        $category_nicename = $category -> slug;   
        if ($category -> parent == $category -> cat_ID)// recursive recursion   
            $category -> parent = 0;   
        elseif ($category -> parent != 0)   
            $category_nicename = get_category_parents($category -> parent, false, '/', true) . $category_nicename;   
        $category_rewrite['(' . $category_nicename . ')/(?:feed/)?(feed|rdf|rss|rss2|atom)/?$'] = 'index.php?category_name=$matches[1]&feed=$matches[2]';   
        $category_rewrite['(' . $category_nicename . ')/page/?([0-9]{1,})/?$'] = 'index.php?category_name=$matches[1]&paged=$matches[2]';   
        $category_rewrite['(' . $category_nicename . ')/?$'] = 'index.php?category_name=$matches[1]';   
    }   
    // Redirect support from Old Category Base   
    global $wp_rewrite;   
    $old_category_base = get_option('category_base') ? get_option('category_base') : 'category';   
    $old_category_base = trim($old_category_base, '/');   
    $category_rewrite[$old_category_base . '/(.*)$'] = 'index.php?category_redirect=$matches[1]';   
  
    //var_dump($category_rewrite); // For Debugging   
    return $category_rewrite;   
}   
  
  
// Add 'category_redirect' query variable   
add_filter('query_vars', 'no_category_base_query_vars');   
function no_category_base_query_vars($public_query_vars) {   
    $public_query_vars[] = 'category_redirect';   
    return $public_query_vars;   
}   
  
// Redirect if 'category_redirect' is set   
add_filter('request', 'no_category_base_request');   
function no_category_base_request($query_vars) {   
    //print_r($query_vars); // For Debugging   
    if (isset($query_vars['category_redirect'])) {   
        $catlink = trailingslashit(get_option('home')) . user_trailingslashit($query_vars['category_redirect'], 'category');   
        status_header(301);   
        header("Location: $catlink");   
        exit();   
    }   
    return $query_vars;   
}