使用带有“空数据”的主题。将两个文件放入目录中，然后激活“主题”。

style.css

/*
Theme Name: turn off frontend
Theme URI: 
Description: 
Author: 
Version: 
License: GNU 
License URI: 
Tags:
*/

<?php
exit;

把这个放进你的。htaccess并列出要保持可用的路径：

RewriteCond %{REQUEST_URI} !^/wp-admin
RewriteCond %{REQUEST_URI} !^/wp-includes
RewriteCond %{REQUEST_URI} !^/wp-login
RewriteCond %{REQUEST_URI} !^/wp-content/uploads
RewriteCond %{REQUEST_URI} !^/wp-content/plugins
RewriteCond %{REQUEST_URI} !^/wp-content/cache
RewriteRule (.*) http://yournewdomain.com/ [R=301,L]

虽然这是一个已经被接受的老问题，但有人可能会觉得这很有用，特别是因为这些解决方案都不适合我。

function redirect_to_backend() {
    if( !is_admin() ) {
        wp_redirect( site_url(\'wp-admin\') );
        exit();
    }
}
add_action( \'init\', \'redirect_to_backend\' );

在“init”钩子上运行检查，检查我们正在加载的页面是否是前端（不是wp admin）

只需将代码放入任何插件或主题函数中即可。php和它应该是现成的。

EDIT:

如果这对您不起作用（即使使用此代码，我也有一些小问题），您可以创建一个新主题（或子主题），并仅将此内容放在header.php 文件：

<?php
header("Location: ".get_admin_url());
exit();

将此添加到。根目录中的htaccess

redirect 301 /wordpress http://www.domain.com

在IMO中，插件所需的工作更少，更适合特定情况。

<?php
/*
Plugin Name: Disalbe Frontend
Description:  Disable the frontend interface of the website, leave only CMS and REST API
Version: 1.0
*/

add_action(\'init\', \'redirect_to_backend\');

function redirect_to_backend() {
    if(
        !is_admin() &&
        !is_wplogin() &&
        !is_rest()
    ) {
    wp_redirect(site_url(\'wp-admin\'));
    exit();
  }
}


if (!function_exists(\'is_rest\')) {
    /**
     * Checks if the current request is a WP REST API request.
     * 
     * Case #1: After WP_REST_Request initialisation
     * Case #2: Support "plain" permalink settings
     * Case #3: URL Path begins with wp-json/ (your REST prefix)
     *          Also supports WP installations in subfolders
     * 
     * @returns boolean
     * @author matzeeable
     */
    function is_rest() {
        $prefix = rest_get_url_prefix( );
        if (defined(\'REST_REQUEST\') && REST_REQUEST // (#1)
            || isset($_GET[\'rest_route\']) // (#2)
                && strpos( trim( $_GET[\'rest_route\'], \'\\\\/\' ), $prefix , 0 ) === 0)
            return true;

        // (#3)
        $rest_url = wp_parse_url( site_url( $prefix ) );
        $current_url = wp_parse_url( add_query_arg( array( ) ) );
        return strpos( $current_url[\'path\'], $rest_url[\'path\'], 0 ) === 0;
    }
}

function is_wplogin(){
    $ABSPATH_MY = str_replace(array(\'\\\\\',\'/\'), DIRECTORY_SEPARATOR, ABSPATH);
    return ((in_array($ABSPATH_MY.\'wp-login.php\', get_included_files()) || in_array($ABSPATH_MY.\'wp-register.php\', get_included_files()) ) || (isset($_GLOBALS[\'pagenow\']) && $GLOBALS[\'pagenow\'] === \'wp-login.php\') || $_SERVER[\'PHP_SELF\']== \'/wp-login.php\');
}

If you want to keep your REST api working use this in your index.php:

<?php
/**
 * Front to the WordPress application. This file doesn\'t do anything, but loads
 * wp-blog-header.php which does and tells WordPress to load the theme.
 *
 * @package WordPress
 */

/**
 * Tells WordPress to load the WordPress theme and output it.
 *
 * @var bool
 */
define( \'WP_USE_THEMES\', false );

/** Loads the WordPress Environment and Template */
require __DIR__ . \'/wp-blog-header.php\';