The WordPress 'auth_redirect_scheme' PHP filter allows developers to customize the authentication scheme used for redirecting users to the login page. This can improve security and user experience.
The 'author_feed_link' PHP filter in WordPress allows developers to modify the RSS feed URL for individual authors. This can be useful for creating custom feeds or integrating with third-party services.
The `before_signup_header` action in WordPress allows developers to modify the header section of the Site Sign-up page using PHP code, which can be used for adding custom content or functionality
The article "Using WordPress `check_ajax_referer` PHP action" explains how to use the `check_ajax_referer` action in WordPress to validate Ajax nonce requests and perform custom actions based on the result