A HitchHackers guide through WordPress

Source code

function wp_notify_postauthor( $comment_id, $comment_type = '' ) {

	$comment = get_comment( $comment_id );

	$post    = get_post( $comment->comment_post_ID );

	$author  = get_userdata( $post->post_author );



	// The comment was left by the author

	if ( $comment->user_id == $post->post_author )

		return false;



	// The author moderated a comment on his own post

	if ( $post->post_author == get_current_user_id() )

		return false;



	// If there's no email to send the comment to

	if ( '' == $author->user_email )

		return false;



	$comment_author_domain = @gethostbyaddr($comment->comment_author_IP);



	// The blogname option is escaped with esc_html on the way into the database in sanitize_option

	// we want to reverse this for the plain text arena of emails.

	$blogname = wp_specialchars_decode(get_option('blogname'), ENT_QUOTES);



	if ( empty( $comment_type ) ) $comment_type = 'comment';



	if ('comment' == $comment_type) {

		$notify_message  = sprintf( __( 'New comment on your post "%s"' ), $post->post_title ) . "\r\n";

		/* translators: 1: comment author, 2: author IP, 3: author domain */

		$notify_message .= sprintf( __('Author : %1$s (IP: %2$s , %3$s)'), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n";

		$notify_message .= sprintf( __('E-mail : %s'), $comment->comment_author_email ) . "\r\n";

		$notify_message .= sprintf( __('URL    : %s'), $comment->comment_author_url ) . "\r\n";

		$notify_message .= sprintf( __('Whois  : http://whois.arin.net/rest/ip/%s'), $comment->comment_author_IP ) . "\r\n";

		$notify_message .= __('Comment: ') . "\r\n" . $comment->comment_content . "\r\n\r\n";

		$notify_message .= __('You can see all comments on this post here: ') . "\r\n";

		/* translators: 1: blog name, 2: post title */

		$subject = sprintf( __('[%1$s] Comment: "%2$s"'), $blogname, $post->post_title );

	} elseif ('trackback' == $comment_type) {

		$notify_message  = sprintf( __( 'New trackback on your post "%s"' ), $post->post_title ) . "\r\n";

		/* translators: 1: website name, 2: author IP, 3: author domain */

		$notify_message .= sprintf( __('Website: %1$s (IP: %2$s , %3$s)'), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n";

		$notify_message .= sprintf( __('URL    : %s'), $comment->comment_author_url ) . "\r\n";

		$notify_message .= __('Excerpt: ') . "\r\n" . $comment->comment_content . "\r\n\r\n";

		$notify_message .= __('You can see all trackbacks on this post here: ') . "\r\n";

		/* translators: 1: blog name, 2: post title */

		$subject = sprintf( __('[%1$s] Trackback: "%2$s"'), $blogname, $post->post_title );

	} elseif ('pingback' == $comment_type) {

		$notify_message  = sprintf( __( 'New pingback on your post "%s"' ), $post->post_title ) . "\r\n";

		/* translators: 1: comment author, 2: author IP, 3: author domain */

		$notify_message .= sprintf( __('Website: %1$s (IP: %2$s , %3$s)'), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n";

		$notify_message .= sprintf( __('URL    : %s'), $comment->comment_author_url ) . "\r\n";

		$notify_message .= __('Excerpt: ') . "\r\n" . sprintf('[...] %s [...]', $comment->comment_content ) . "\r\n\r\n";

		$notify_message .= __('You can see all pingbacks on this post here: ') . "\r\n";

		/* translators: 1: blog name, 2: post title */

		$subject = sprintf( __('[%1$s] Pingback: "%2$s"'), $blogname, $post->post_title );

	}

	$notify_message .= get_permalink($comment->comment_post_ID) . "#comments\r\n\r\n";

	$notify_message .= sprintf( __('Permalink: %s'), get_permalink( $comment->comment_post_ID ) . '#comment-' . $comment_id ) . "\r\n";

	if ( EMPTY_TRASH_DAYS )

		$notify_message .= sprintf( __('Trash it: %s'), admin_url("comment.php?action=trash&c=$comment_id") ) . "\r\n";

	else

		$notify_message .= sprintf( __('Delete it: %s'), admin_url("comment.php?action=delete&c=$comment_id") ) . "\r\n";

	$notify_message .= sprintf( __('Spam it: %s'), admin_url("comment.php?action=spam&c=$comment_id") ) . "\r\n";



	$wp_email = 'wordpress@' . preg_replace('#^www\.#', '', strtolower($_SERVER['SERVER_NAME']));



	if ( '' == $comment->comment_author ) {

		$from = "From: \"$blogname\" <$wp_email>";

		if ( '' != $comment->comment_author_email )

			$reply_to = "Reply-To: $comment->comment_author_email";

	} else {

		$from = "From: \"$comment->comment_author\" <$wp_email>";

		if ( '' != $comment->comment_author_email )

			$reply_to = "Reply-To: \"$comment->comment_author_email\" <$comment->comment_author_email>";

	}



	$message_headers = "$from\n"

		. "Content-Type: text/plain; charset=\"" . get_option('blog_charset') . "\"\n";



	if ( isset($reply_to) )

		$message_headers .= $reply_to . "\n";



	$notify_message = apply_filters('comment_notification_text', $notify_message, $comment_id);

	$subject = apply_filters('comment_notification_subject', $subject, $comment_id);

	$message_headers = apply_filters('comment_notification_headers', $message_headers, $comment_id);



	@wp_mail( $author->user_email, $subject, $notify_message, $message_headers );



	return true;

}