The 'after_signup_user' PHP action in WordPress is triggered after a user registers on the site. To use it, add code to functions.php.

The 'ajax_query_attachments_args' PHP filter in WordPress allows developers to modify the arguments passed to the AJAX query that retrieves attachment data. This can be useful for customizing the output of…

​The `add_action` function in WordPress allows developers to execute custom functions when the `all_admin_notices` PHP action is triggered, which displays generic admin screen notices

The 'allow_password_reset' PHP filter in WordPress allows developers to control whether users can reset their passwords.

The 'atom_comments_ns' PHP action in WordPress adds custom XML namespace declarations to the Atom feed for comments.

The 'attachment_fields_to_edit' PHP filter in WordPress allows developers to customize the fields displayed on the media attachment edit screen. This filter can be used to add, remove, or modify fields…

The 'attachment_fields_to_save' PHP filter in WordPress allows developers to modify the fields saved when an attachment is updated.

The admin_referrer_policy PHP filter is a powerful tool for enhancing WordPress security. By controlling the referrer policy for your admin pages, you can prevent unauthorized access and protect sensitive data.…

Using the 'admin_viewport_meta' PHP filter in WordPress allows for customizing the viewport meta tag in the admin panel.