WordPress去除分类目录“category”路径的三种方法

/*
 Plugin Name: WP No Category Base
 Plugin URI: http://blinger.org/wordpress-plugins/no-category-base/
 Description: Removes '/category' from your category permalinks.
 Version: 1.1.1
 Author: iDope
 Author URI: http://efextra.com/
 */
 
// Refresh rules on activation/deactivation/category changes
register_activation_hook(__FILE__, '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;
}
 
// For Debugging
//add_filter('rewrite_rules_array', 'no_category_base_rewrite_rules_array');
//function no_category_base_rewrite_rules_array($category_rewrite) {
//	var_dump($category_rewrite); // For Debugging
//}
 
// 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;
}