正在尝试将Wordpress登录URL更改为外部Wordpress安装登录页。我正在使用下面的代码，但它只能重定向到同一网站内的页面或URL。我希望它重定向到外部Wordpress登录URL。有什么建议吗？

感谢您的帮助！

// REDIRECT THE DEFAULT WORDPRESS LOGIN PAGE
// =============================================================
add_action(\'init\',\'custom_login\');
function custom_login(){
 global $pagenow;
 //  URL for the HomePage. You can set this to the URL of any page you wish to redirect to.
 $blogHomePage = get_bloginfo(\'url\');
 //  Redirect to the Homepage, if it is login page. Make sure it is not called to logout or for lost password feature
 if( \'wp-login.php\' == $pagenow && $_GET[\'action\']!="logout" && $_GET[\'action\']!="lostpassword") {
     wp_redirect(\'/login/\');
     exit();
 }
}