修改wp自带的发送给管理员的评论通知邮件,不用动系统文件

1. 原始方法: 修改系统文件wp-includes/pluggable.php中的wp_notify_postauthor函数
2. 高端方法: 添加自定义function,挂钩到原函数 by小蝴蝶
3. 相关的钩子: comment_notification_text
4. 基本思路

function xhd_mail2admin( $notify_message, $comment_id ) {
//CODE
}
add_filter( 'comment_notification_text', 'xhd_mail2admin', 10, 2 );

进阶教程

实现效果: 增加了PR和IP归属地,对原有一些累赘的参数进行了删减,去掉了WHOIS,修改了查看评论的固定链接格式
首先扔一段pr查询解码的函数,具体原理见我以前写过的这篇欢迎访客之显示对方网站PR

function app_hash_url($url) {
$seed = "Mining PageRank is AGAINST GOOGLE'S TERMS OF SERVICE.";
$hash = 0x01020345;
for ($i=0; $i<strlen( $url); $i++) {
$hash ^= ord($seed{$i%87}) ^ ord($url{$i});
$hash = (($hash >> 23) & 0x1FF) | $hash << 9;
}

return sprintf("8%x", $hash);
}

然后是主代码

 
function xhd_mail2admin( $notify_message, $comment_id ) {

	/* wp_notify_postauthor原有参数 */
	$comment = get_comment( $comment_id );
	$post    = get_post( $comment->comment_post_ID );
	$author  = get_userdata( $post->post_author );
	if ( $comment->user_id == $post->post_author )
		return false;
	if ( $post->post_author == get_current_user_id() )
		return false;
	if ( '' == $author->user_email )
		return false;
	$blogname = wp_specialchars_decode(get_option('blogname'), ENT_QUOTES);

	/* ip归属地的api */
	$IPURL  = 'http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=json&ip='.$comment->comment_author_IP;
	$json = file_get_contents($IPURL);
	$json = json_decode($json, true);
	$json = $json["country"].$json["province"].$json["city"].$json["district"].$json["isp"];

	/* 邮件正文 */
	$notify_message  = sprintf( __( 'New comment on your post "%s"' ), $post->post_title ) . "rn";
	$notify_message .= sprintf( __('Author : %s '), $comment->comment_author ) . "rn";
	$notify_message .= sprintf( __('IP: %1$s ( %2$s) '), $json,  $comment->comment_author_IP ) . "rn";
	//如果担心调用IP归属地造成评论提交变慢,可以把上一行改成下一行,注释去掉
	//$notify_message .= sprintf( __('IP: %s '), $IPURL ) . "rn";
	$notify_message .= sprintf( __('E-mail : %s'), $comment->comment_author_email ) . "rn";
	$notify_message .= sprintf( __('网站: %s'), $comment->comment_author_url ) . "rn";

	/* PR */
	$domain1 = $comment->comment_author_url ;
	$domain=substr($domain1,7);
	$startUrl = "http://toolbarqueries.google.com/tbr?client=navclient-auto&features=Rank&q=info:";
	$resultUrl = $startUrl.$domain."&ch=".app_hash_url($domain); 
	$array = get_headers($resultUrl,1); 
	if(!preg_match('/403/',$array[0])){
		$pageContent = file_get_contents($resultUrl);
		$pageRank = substr($pageContent,9);
 		$notify_message .= sprintf( __('PR: %s'), $pageRank ) . "rn";
	} else {
		$notify_message .= __('PR:0 ') . "rn";
	}
		$notify_message .= __('Comment: ') . "rn" . $comment->comment_content . "rnrn";

	$notify_message .= sprintf( __('Permalink: %s'), get_comment_link($comment) ) . "rn";//修改了原本的格式,原格式不能精确跳转到评论位置

	if ( EMPTY_TRASH_DAYS )
		$notify_message .= sprintf( __('Trash it: %s'), admin_url("comment.php?action=trash&c=$comment_id") ) . "rn";
	else
		$notify_message .= sprintf( __('Delete it: %s'), admin_url("comment.php?action=delete&c=$comment_id") ) . "rn";
	$notify_message .= sprintf( __('Spam it: %s'), admin_url("comment.php?action=spam&c=$comment_id") ) . "rn";

	return $notify_message;
}
add_filter( 'comment_notification_text', 'xhd_mail2admin', 10, 2 );

效果如图: