WordPress怎么修改新用户注册邮件内容

$message  = sprintf(__('Username: %s'), $user_login) . "";
$message .= sprintf(__('Password: %s'), $plaintext_pass) . "";
$message .= wp_login_url() . "";
wp_mail($user_email, sprintf(__('[%s] Your username and password'), $blogname), $message);

$message .= sprintf(__('欢迎加入***网')) . "rn";
 
$message .= sprintf(__('Username: %s'), $user_login) . "rn";
$message .= sprintf(__('Password: %s'), $plaintext_pass) . "rn";
$message .= wp_login_url() . "rn";
$message .= sprintf(__('账号需进一步审核才可以登入，请通知网站管理员')) . "rn";
wp_mail($user_email, sprintf(__('[%s] Your username and password'), $blogname), $message);

if ( !function_exists('wp_new_user_notification') ) :
/**
 * Notify the blog admin of a new user, normally via email.
 *
 * @since 2.0
 *
 * @param int $user_id User ID
 * @param string $plaintext_pass Optional. The user's plaintext password
 */
function wp_new_user_notification($user_id, $plaintext_pass = '') {
    $user = get_userdata( $user_id );

    $user_login = stripslashes($user->user_login);
    $user_email = stripslashes($user->user_email);

    // 获取博客名称
    $blogname = wp_specialchars_decode(get_option('blogname'), ENT_QUOTES);

    // 给管理员发送的邮件内容，这里是HTML格式
    $message = '

    // 给网站管理员发送邮件
    $message_headers = "Content-Type: text/html; charset="utf-8"n";
    @wp_mail(get_option('admin_email'), sprintf(__('[%s] New User Registration'), $blogname), $message, $message_headers);

    if ( empty($plaintext_pass) )
        return;
   
    // 你可以在此修改发送给新用户的通知Email，这里是HTML格式
    $message = '

    // sprintf(__('[%s] Your username and password'), $blogname) 为邮件标题
    wp_mail($user_email, sprintf(__('[%s] Your username and password'), $blogname), $message, $message_headers);
}
endif;