通过修改源码，免插件实现wordpress去除链接中的category

/**

 * 去除category

 */

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;

}