想要实现WordPress新评论消息钉钉机器人消息通知，
首先你要有一个钉钉号，再创建一个普通群，群内选择一个自定义机器人，并且获得机器人的webhook和加签秘钥
钉钉机器人

function request_by_curl($remote_server, $post_string) {  
    $ch = curl_init();  
    curl_setopt($ch, CURLOPT_URL, $remote_server);
    curl_setopt($ch, CURLOPT_POST, 1); 
    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5); 
    curl_setopt($ch, CURLOPT_HTTPHEADER, array ('Content-Type: application/json;charset=utf-8'));
    curl_setopt($ch, CURLOPT_POSTFIELDS, $post_string);  
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);  
    curl_setopt ($ch, CURLOPT_SSL_VERIFYHOST, 0); 
    curl_setopt ($ch, CURLOPT_SSL_VERIFYPEER, 0);
    $data = curl_exec($ch);
    curl_close($ch);                
    return $data;  
}
function boxmoe_msg_comment($comment_id){
    $comment = get_comment($comment_id);
    $siteurl = get_bloginfo('url');
    $text = '文章《' . get_the_title($comment->comment_post_ID) . '》有新的评论！';
    $message = $text . "\n" . "作者: $comment->comment_author \n邮箱: $comment->comment_author_email \n评论: $comment->comment_content \n 点击查看：$siteurl/?p=$comment->comment_post_ID#comments";
			$time    = intval(microtime(true) * 1000);
			$secret  = '机器人加签秘钥';
			$sign    = urlencode(base64_encode(hash_hmac('sha256', "{$time}\n{$secret}", $secret, true)));
			$apiurl	 = 'https://oapi.dingtalk.com/robot/send?access_token=你的webhook&timestamp='.$time.'&sign='.$sign.'';
			$data = array ('msgtype' => 'text','text' => array ('content' => $message));
			$data_string = json_encode($data);
			return $result = request_by_curl($apiurl, $data_string);  	
	}
add_action('comment_post', 'boxmoe_msg_comment', 19, 2);