What is WordPress Hook: comment_notification_headers
The comment_notification_headers hook in WordPress is used to modify the headers of the email notifications sent to administrators when a new comment is posted on the website. This hook allows developers to customize the email headers, such as the sender’s name and email address, subject line, and additional headers.
Understanding the Hook: comment_notification_headers
The comment_notification_headers hook is located within the wp_notify_postauthor() function in the WordPress core. This function is responsible for sending email notifications to site administrators when a new comment is submitted. The hook is called just before the email is sent, allowing developers to modify the email headers before the notification is dispatched.
Hook Parameters (if applicable): comment_notification_headers
The comment_notification_headers hook does not accept any parameters. Developers can directly modify the email headers within the callback function attached to this hook.
Hook Doesn’t Work: comment_notification_headers
If the comment_notification_headers hook does not seem to be working, it could be due to conflicts with other plugins or themes that also modify email notifications. Developers should ensure that their callback function is properly registered and that there are no syntax errors in their code. Additionally, checking for any conflicting functions or filters that may be interfering with the hook is recommended.
Best Practices & Usage Notes (if applicable): comment_notification_headers
When using the comment_notification_headers hook, developers should be mindful of the email headers they are modifying to ensure that the notifications are still delivered correctly. It is important to adhere to email header standards and avoid any practices that could result in the emails being flagged as spam. Additionally, developers should consider the potential impact of their modifications on the overall user experience and email deliverability.
comment_notification_headers Usage Example: comment_notification_headers
“`php
function custom_comment_notification_headers( $headers ) {
$headers[] = ‘Reply-To: Custom Name
return $headers;
}
add_filter( ‘comment_notification_headers’, ‘custom_comment_notification_headers’ );
“`