例如，我写了一篇新的帖子，内容是“今天我很高兴，因为我终于遇到了那个@David告诉我的女孩……”这篇文章发表后，应该会向David发送一封关于这篇提到他的文章的电子邮件通知。已经有这样的插件了吗？如果没有，请帮助我实施。非常感谢！：）

脚本需要首先解析这篇新帖子的内容。在“@”后查找姓名，然后转到数据库以匹配评论者的姓名，以获取他/她的电子邮件地址（假设我@之前必须在我的博客上发表评论的人）

下面是发送电子邮件的基本部分。

function email_friend()  {

    $postTitle = get_the_title($id);
    $post_permalink = get_permalink( $id );
    $to = \'David@email.com\';
    $subject = \'Arch!tect mentioned you in his new post《\'.$postTitle .\'》\';
    $from = "noreplay@myWebsite.com";
    $headers = "From:" . $from;

    $message = "Arch!tect mentioned you in his new post《".$postTitle . 
    "》 check it out？\\n\\n"  ."Post link：".$post_permalink
    ."\\n\\n\\nPlease don\'t reply this email.\\r\\n";

    mail($to, $subject, $message, $headers);
}

add_action ( \'publish post\', \'email_friend\' );

完成简单部分！

现在请帮我解决困难的部分。。。解析post中的名称并获取数据库中的电子邮件地址。

<小时>P.S。

谢谢大家的帮助！我成功地完成了代码，现在运行良好（已测试）。为了提及名字中有空格的人，我先使用下划线，然后再将其改回空格。现在，它会向我在帖子中提到的所有人发送电子邮件，完成后，它会向我自己发送一份结果摘要。我将粘贴下面的完整代码，请看一看，并告诉我需要改进的地方。

function email_friend()  {

    // get post object
    $post = get_post($id);
    // get post content
    $content = $post->post_content;
    // get how many people is mentioned in this post
    //$mentionCount = preg_match_all(\'/(@(\\w)+)/\', $content, $matches);
    $mentionCount = preg_match_all(\'/(@[^\\s]+)/\', $content, $matches);//support other lang


    // if there is at least one @ with a name after it
    if (0 !== $mentionCount) {

        $friendList = array();//for storing correct names

        for ($mentionIndex=0; $mentionIndex < $mentionCount; $mentionIndex++) {

            $mentionName = $matches[0][$mentionIndex];  

            $mentionName = str_replace(\'_\',\' \',$mentionName); //change _ back to space

            $mentionName = substr($mentionName, 1); //get rid of @
            //for security and add wildcard
            $friend_display_name_like = \'%\' . like_escape($mentionName) . \'%\'; 

            global $wpdb;

            // get correct name first
            $friendCorrectName = $wpdb->get_var( $wpdb->prepare( "

                                                           SELECT comment_author
                                                           FROM $wpdb->comments
                                                           WHERE comment_author
                                                           LIKE %s ",
                                                           $friend_display_name_like
                                                           )) ;

            // get friend email by comment author name
            $friend_email = $wpdb->get_var( $wpdb->prepare( "

                                                           SELECT comment_author_email
                                                           FROM $wpdb->comments
                                                           WHERE comment_author
                                                           LIKE %s ",
                                                           $friendCorrectName
                                                           )) ;


            if($friend_email) {// if found email address then email

                $postTitle = get_the_title($id);
                $post_permalink = get_permalink( $id );
                $to =   $friend_email;
                $subject =   \'Arch!tect mentioned you in his new post 《\'.$postTitle . 

                \'》\';

                $from = "noreplay@swotong.com";

                $headers = "From:" . $from;

                $message = "Arch!tect mentioned you in his new post《".$postTitle . 
                "》 check it out？\\n\\n"  ."Post link：".$post_permalink
                ."\\n\\n\\nPlease don\'t reply this email.\\r\\n";

                if(mail($to, $subject, $message, $headers)) {
                    //if send successfully put his/her name in my list
                    array_push($friendList, $friendCorrectName);
                   //array_push($friendList, $friend_email);
                }


            } 



        } 
 $comma_separated = implode(",", $friendList); //friend list array to string 

        // now send an email to myself about the result
        $postTitle = get_the_title($id);
        $post_permalink = get_permalink( $id );
        $to =    \'myOwn@email.com\';
        $subject =   "Your new post《".$postTitle . 
        "》has notified ".count($friendList)."friends successfully";
        $from = "noreplay@email.com";
        $headers = "From:" . $from;
        //list all friends that received my email
        $message = "Your new post《".$postTitle . 
        "》has notified ".count($friendList)."friends successfully:\\n\\n".$comma_separated ;

        mail($to, $subject, $message, $headers);


    }





}//end of email_friend function


add_action ( \'publish_post\', \'email_friend\' );

编辑：已将（\\w）+更改为[^\\s]+，因此它支持更多语言。（中文测试）

<?php
function my_email_friend($post_id = \'\') {
    // get post object
    $post = get_post($post_id);
    // get post content
    $content = $post->post_content;
    // if @David exists
    if( 0 !== preg_match(\'/(@\\w)/\', $content, $matches) )
        $friend_display_name_like = \'%\' . like_escape($matches[0]) . \'%\';
    else
        return; // do nothing if no matches
    global $wpdb;
    // get friend email by \'display_name\'
    $friend_email = $wpdb->get_var( $wpdb->prepare( "
        SELECT user_email
        FROM $wpdb->users
        WHERE display_name
        LIKE %s ",
        $friend_display_name_like
    )) ;
    if($friend_email) {
        /* Your  code here, \'mail()\' can use \'$friend_email\' */
    }
}
add_action(\'publish_post\', \'my_email_friend\');