WordPress评论/回复邮件提醒

代码转载自互联网，本人在发送邮件样式上有稍作修改

在主题的function.php中添加如下代码

/* comment_mail_notify v1.0 by willin kan. (所有回复都发邮件) */
function comment_mail_notify($comment_id) {
  $comment = get_comment($comment_id);
  $parent_id = $comment->comment_parent ? $comment->comment_parent : '';
  $spam_confirmed = $comment->comment_approved;
  if (($parent_id != '') && ($spam_confirmed != 'spam')) {
    $wp_email = 'no-reply@' . preg_replace('#^www.#', '', strtolower($_SERVER['SERVER_NAME'])); //e-mail 发出点, no-reply 可改为可用的 e-mail.
    $to = trim(get_comment($parent_id)->comment_author_email);
    $subject = '您在 [' . get_option("blogname") . '] 的留言有了回复';
    $message='    <div style="box-shadow: 0px 0px 10px 5px rgba(85, 85, 85, 0.10);border-radius: 10px;padding:20px;margin: 10px;">
    <div style="font-size: larger;">
        您在 ['.get_option ("blogname").'] 的留言有了新的回复
    </div>
    <div style="margin-left: 5px;margin-right: 5px;">
        <p>您曾在<span style="color:#23b7e5;font-weight:bold">《'.get_the_title ($comment->comment_post_ID ).'》</span>的留言:
        </p>
        <div style="margin:10px;border:1px solid #dfdfdf;padding:8px;color:#a0a0a0;border-radius: 5px;">
            '.trim(get_comment
            ($parent_id)->comment_content ).'</div>
        <p><span style="color:#23b7e5 ;font-weight:bold">'.trim($comment->comment_author ).' </span>给您的回复:</p>
        <div style="margin:10px;border:1px solid #dfdfdf;padding:8px;color:#a0a0a0;border-radius: 5px;">
            '.trim($comment->comment_content
            ).'
        </div>
        <p>您可以点此 <a href="'.get_permalink ($comment->comment_post_ID ).'"
            style="text-decoration:none;color:#5d9cec;">查看回复的完整內容</a></p>
    </div>
    <div style="margin-top:20px;color:rgb(53, 53, 53);font-size:12px;">请注意：此邮件由[<span
        style="color:#5d9cec"> '.get_option ("blogname").'</span> ]自动发送，请勿回复</div>
</div>';
      $from = "From: \"" . get_option('blogname') . "\" <$wp_email>";
      $headers = "$from\nContent-Type: text/html; charset=" . get_option('blog_charset') . "\n";
      wp_mail( $to, $subject, $message, $headers );
  }
}
add_action('comment_post', 'comment_mail_notify');