WordPress中去掉固定链接中的category

wordpress默认情况下设置固定链接，分类页面是有category路径的。出于seo优化的考虑，网站的链接层次多，不利于蜘蛛的抓取，也就是说链接越简洁越好，链接的路径越少越好。在百度优化指南中，百度一直是建议站长们使用浅表的层次结构。

下面我们讲解一下WordPress建站中去掉固定链接中的category的方法。

方法1：切换到主题目录，打开functions.php文件，添加如下代码，然后到wordpress后台中设置的地方，点击固定链接，保存即可生效。

/**
 * 去除固定链接中的/category/路径，记得在后台保存一次固定链接
 */
add_action('init', 'jacky_no_category');
function jacky_no_category() {
	global $wp_rewrite;
	$wp_rewrite -> extra_permastructs['category']['struct'] = '%category%';
}

/**

* 去除固定链接中的/category/路径，记得在后台保存一次固定链接

add_action('init', 'jacky_no_category');

function jacky_no_category() {

global $wp_rewrite;

$wp_rewrite -> extra_permastructs['category']['struct'] = '%category%';

}

方法2：基于插件WP No Category Base上的代码，切换到主题目录，打开functions.php文件，添加如下代码，然后到wordpress后台中设置的地方，点击固定链接，保存即可生效。

/**
 * 去除固定链接中的/category/路径，添加后在后台保存一次固定链接
 * 基于 WP No Category Base 插件
 */
 
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;
}

/**

* 去除固定链接中的/category/路径，添加后在后台保存一次固定链接

* 基于 WP No Category Base 插件

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;

}

方法3：基于伪静态，主机使用linux系统的用户，可以将带有category的链接重定向至没有它的链接,通过编写.htaccess的301重定向规则

RewriteEngine On
RewriteBase /
RewriteRule ^category/(.+)$ http://www.youdomain.com/$1 [R=301,L]

RewriteEngine On

RewriteBase /

RewriteRule ^category/(.+)$ http://www.youdomain.com/$1 [R=301,L]