智能摘要 DeepSeek
这段代码旨在去除WordPress主题中的category分类标志，例如将`suxing.me/category/217.html`改为`suxing.me/217.html`，以提升链接美观性和提升搜索引擎收录。但建议新站不要立即更改，老站可保留。代码通过`add_action`和`add_filter`在`category_rewrite_rules`中定义了重写规则，用于修改分类标签的URL结构，并通过`extra_permastructs`和`query_vars`实现永久重写功能。同时，代码还包含重定向逻辑，以确保分类标签的正确更新。

之前，很多朋友都问我，怎么去掉链接中的category分类标志，例如suxing.me/category/217.html改成suxing.me/217.html

这样看起来链接不仅美观，还有利于收录。

但在这里给大家奉劝一句：如果你是新站，我建议你马上就改掉。但如果你是老站，就最好别改了。

如果您是购买了苏醒的VFILM2014主题,那请放在/includes/add.php中。

其他主题，把代码放在主题文件functions.php中最后一行即可。

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;
}