下面是一个快速而肮脏的插件，它向您展示了如何实现这一点（根据您自己的架构和需求调整此示例）：

<?php 
/*
Plugin Name: Custom rewrite rule test
*/

add_action(
    \'plugins_loaded\', 
    array(Registration::get_instance(), \'setup\')
);

class Registration {

    protected static $instance = NULL;

    public function __construct() {}

    public static function get_instance() {
        NULL === self::$instance and self::$instance = new self;
        return self::$instance;
    }    

    public function setup() {

        add_action(\'init\', array($this, \'rewrite_rules\'));
        add_filter(\'query_vars\', array($this, \'query_vars\'), 10, 1);
        add_action(\'parse_request\', array($this, \'parse_request\'), 10, 1);

        register_activation_hook(__FILE__, array($this, \'flush_rules\' ));

    }

    public function rewrite_rules(){
        add_rewrite_rule(\'registration/?$\', \'index.php?registration=true\', \'top\');
    }

    public function flush_rules(){
        $this->rewrite_rules();
        flush_rewrite_rules();
    }

    public function query_vars($vars){
        $vars[] = \'registration\';
        return $vars;
    }

    public function parse_request($wp){
        if ( array_key_exists( \'registration\', $wp->query_vars ) ){
            include plugin_dir_path(__FILE__) . \'registration.php\';
            exit();
        }
    }

}

• 使用add_rewrite_rule()
• 添加自定义查询变量“registration”
• 分析请求，检查是否存在“注册”查询变量（如果存在），包括registration.php 文件

添加internal WordPress rewrite规则是外部规则的一个，即WordPress环境将在您的registration.php 例如，如果您需要修改或检索数据库中的数据，您可以。

你内心的榜样registration.php 文件：

<?php 

global $wp, $wpdb;

//get query variable: index.php?registration=true
var_dump($wp->query_vars[\'registration\']); //true

//check if user is logged in
if ( is_user_logged_in() ) {
  //use $wpdb to get results from database etc
}

//do your registration business logic here etc