wp_notify_postauthor( int|WP_Comment $comment_id, string $deprecated = null ): bool

Notifies an author (and/or others) of a comment/trackback/pingback on a post.

Parameters

$comment_idint|WP_Commentrequired
Comment ID or WP_Comment object.
$deprecatedstringoptional
Not used.

Default:null

Return

bool True on completion. False if no email addresses were specified.

More Information

  • This function can be replaced via plugins. If plugins do not redefine these functions, then this will be used instead.
  • This function is pluggable using the following filters:
    • comment_notification_text
    • comment_notification_subject
    • comment_notification_headers

    If the plugins do not redefine the functions using filters, then the default functionality will be used.

    To modify the content of the email that is sent when a reader leaves a comment, you may provide filters for each of the above functions in your plugin.

    This function also sanitizes a URL for use in a redirect.

Source

function wp_notify_postauthor( $comment_id, $deprecated = null ) {
	if ( null !== $deprecated ) {
		_deprecated_argument( __FUNCTION__, '3.8.0' );
	}

	$comment = get_comment( $comment_id );
	if ( empty( $comment ) || empty( $comment->comment_post_ID ) ) {
		return false;
	}

	$post   = get_post( $comment->comment_post_ID );
	$author = get_userdata( $post->post_author );

	// Who to notify? By default, just the post author, but others can be added.
	$emails = array();
	if ( $author ) {
		$emails[] = $author->user_email;
	}

	/**
	 * Filters the list of email addresses to receive a comment notification.
	 *
	 * By default, only post authors are notified of comments. This filter allows
	 * others to be added.
	 *
	 * @since 3.7.0
	 *
	 * @param string[] $emails     An array of email addresses to receive a comment notification.
	 * @param string   $comment_id The comment ID as a numeric string.
	 */
	$emails = apply_filters( 'comment_notification_recipients', $emails, $comment->comment_ID );
	$emails = array_filter( $emails );

	// If there are no addresses to send the comment to, bail.
	if ( ! count( $emails ) ) {
		return false;
	}

	// Facilitate unsetting below without knowing the keys.
	$emails = array_flip( $emails );

	/**
	 * Filters whether to notify comment authors of their comments on their own posts.
	 *
	 * By default, comment authors aren't notified of their comments on their own
	 * posts. This filter allows you to override that.
	 *
	 * @since 3.8.0
	 *
	 * @param bool   $notify     Whether to notify the post author of their own comment.
	 *                           Default false.
	 * @param string $comment_id The comment ID as a numeric string.
	 */
	$notify_author = apply_filters( 'comment_notification_notify_author', false, $comment->comment_ID );

	// The comment was left by the author.
	if ( $author && ! $notify_author && (int) $comment->user_id === (int) $post->post_author ) {
		unset( $emails[ $author->user_email ] );
	}

	// The author moderated a comment on their own post.
	if ( $author && ! $notify_author && get_current_user_id() === (int) $post->post_author ) {
		unset( $emails[ $author->user_email ] );
	}

	// The post author is no longer a member of the blog.
	if ( $author && ! $notify_author && ! user_can( $post->post_author, 'read_post', $post->ID ) ) {
		unset( $emails[ $author->user_email ] );
	}

	// If there's no email to send the comment to, bail, otherwise flip array back around for use below.
	if ( ! count( $emails ) ) {
		return false;
	} else {
		$emails = array_flip( $emails );
	}

	$switched_locale = switch_to_locale( get_locale() );

	$comment_author_domain = '';
	if ( WP_Http::is_ip_address( $comment->comment_author_IP ) ) {
		$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 );
	$comment_content = wp_specialchars_decode( $comment->comment_content );

	switch ( $comment->comment_type ) {
		case 'trackback':
			/* translators: %s: Post title. */
			$notify_message = sprintf( __( 'New trackback on your post "%s"' ), $post->post_title ) . "\r\n";
			/* translators: 1: Trackback/pingback website name, 2: Website IP address, 3: Website hostname. */
			$notify_message .= sprintf( __( 'Website: %1$s (IP address: %2$s, %3$s)' ), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n";
			/* translators: %s: Trackback/pingback/comment author URL. */
			$notify_message .= sprintf( __( 'URL: %s' ), $comment->comment_author_url ) . "\r\n";
			/* translators: %s: Comment text. */
			$notify_message .= sprintf( __( 'Comment: %s' ), "\r\n" . $comment_content ) . "\r\n\r\n";
			$notify_message .= __( 'You can see all trackbacks on this post here:' ) . "\r\n";
			/* translators: Trackback notification email subject. 1: Site title, 2: Post title. */
			$subject = sprintf( __( '[%1$s] Trackback: "%2$s"' ), $blogname, $post->post_title );
			break;

		case 'pingback':
			/* translators: %s: Post title. */
			$notify_message = sprintf( __( 'New pingback on your post "%s"' ), $post->post_title ) . "\r\n";
			/* translators: 1: Trackback/pingback website name, 2: Website IP address, 3: Website hostname. */
			$notify_message .= sprintf( __( 'Website: %1$s (IP address: %2$s, %3$s)' ), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n";
			/* translators: %s: Trackback/pingback/comment author URL. */
			$notify_message .= sprintf( __( 'URL: %s' ), $comment->comment_author_url ) . "\r\n";
			/* translators: %s: Comment text. */
			$notify_message .= sprintf( __( 'Comment: %s' ), "\r\n" . $comment_content ) . "\r\n\r\n";
			$notify_message .= __( 'You can see all pingbacks on this post here:' ) . "\r\n";
			/* translators: Pingback notification email subject. 1: Site title, 2: Post title. */
			$subject = sprintf( __( '[%1$s] Pingback: "%2$s"' ), $blogname, $post->post_title );
			break;

		default: // Comments.
			/* translators: %s: Post title. */
			$notify_message = sprintf( __( 'New comment on your post "%s"' ), $post->post_title ) . "\r\n";
			/* translators: 1: Comment author's name, 2: Comment author's IP address, 3: Comment author's hostname. */
			$notify_message .= sprintf( __( 'Author: %1$s (IP address: %2$s, %3$s)' ), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n";
			/* translators: %s: Comment author email. */
			$notify_message .= sprintf( __( 'Email: %s' ), $comment->comment_author_email ) . "\r\n";
			/* translators: %s: Trackback/pingback/comment author URL. */
			$notify_message .= sprintf( __( 'URL: %s' ), $comment->comment_author_url ) . "\r\n";

			if ( $comment->comment_parent && user_can( $post->post_author, 'edit_comment', $comment->comment_parent ) ) {
				/* translators: Comment moderation. %s: Parent comment edit URL. */
				$notify_message .= sprintf( __( 'In reply to: %s' ), admin_url( "comment.php?action=editcomment&c={$comment->comment_parent}#wpbody-content" ) ) . "\r\n";
			}

			/* translators: %s: Comment text. */
			$notify_message .= sprintf( __( 'Comment: %s' ), "\r\n" . $comment_content ) . "\r\n\r\n";
			$notify_message .= __( 'You can see all comments on this post here:' ) . "\r\n";
			/* translators: Comment notification email subject. 1: Site title, 2: Post title. */
			$subject = sprintf( __( '[%1$s] Comment: "%2$s"' ), $blogname, $post->post_title );
			break;
	}

	$notify_message .= get_permalink( $comment->comment_post_ID ) . "#comments\r\n\r\n";
	/* translators: %s: Comment URL. */
	$notify_message .= sprintf( __( 'Permalink: %s' ), get_comment_link( $comment ) ) . "\r\n";

	if ( user_can( $post->post_author, 'edit_comment', $comment->comment_ID ) ) {
		if ( EMPTY_TRASH_DAYS ) {
			/* translators: Comment moderation. %s: Comment action URL. */
			$notify_message .= sprintf( __( 'Trash it: %s' ), admin_url( "comment.php?action=trash&c={$comment->comment_ID}#wpbody-content" ) ) . "\r\n";
		} else {
			/* translators: Comment moderation. %s: Comment action URL. */
			$notify_message .= sprintf( __( 'Delete it: %s' ), admin_url( "comment.php?action=delete&c={$comment->comment_ID}#wpbody-content" ) ) . "\r\n";
		}
		/* translators: Comment moderation. %s: Comment action URL. */
		$notify_message .= sprintf( __( 'Spam it: %s' ), admin_url( "comment.php?action=spam&c={$comment->comment_ID}#wpbody-content" ) ) . "\r\n";
	}

	$wp_email = 'wordpress@' . preg_replace( '#^www\.#', '', wp_parse_url( network_home_url(), PHP_URL_HOST ) );

	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";
	}

	/**
	 * Filters the comment notification email text.
	 *
	 * @since 1.5.2
	 *
	 * @param string $notify_message The comment notification email text.
	 * @param string $comment_id     Comment ID as a numeric string.
	 */
	$notify_message = apply_filters( 'comment_notification_text', $notify_message, $comment->comment_ID );

	/**
	 * Filters the comment notification email subject.
	 *
	 * @since 1.5.2
	 *
	 * @param string $subject    The comment notification email subject.
	 * @param string $comment_id Comment ID as a numeric string.
	 */
	$subject = apply_filters( 'comment_notification_subject', $subject, $comment->comment_ID );

	/**
	 * Filters the comment notification email headers.
	 *
	 * @since 1.5.2
	 *
	 * @param string $message_headers Headers for the comment notification email.
	 * @param string $comment_id      Comment ID as a numeric string.
	 */
	$message_headers = apply_filters( 'comment_notification_headers', $message_headers, $comment->comment_ID );

	foreach ( $emails as $email ) {
		wp_mail( $email, wp_specialchars_decode( $subject ), $notify_message, $message_headers );
	}

	if ( $switched_locale ) {
		restore_previous_locale();
	}

	return true;
}

Hooks

apply_filters( ‘comment_notification_headers’, string $message_headers, string $comment_id )

Filters the comment notification email headers.

apply_filters( ‘comment_notification_notify_author’, bool $notify, string $comment_id )

Filters whether to notify comment authors of their comments on their own posts.

apply_filters( ‘comment_notification_recipients’, string[] $emails, string $comment_id )

Filters the list of email addresses to receive a comment notification.

apply_filters( ‘comment_notification_subject’, string $subject, string $comment_id )

Filters the comment notification email subject.

apply_filters( ‘comment_notification_text’, string $notify_message, string $comment_id )

Filters the comment notification email text.

Changelog

VersionDescription
1.0.0Introduced.

User Contributed Notes

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