Using WordPress ‘check_comment()’ PHP function
Checks whether a comment passes internal checks to be allowed to add.
HTTPS
Using WordPress ‘check_and_publish_future_post()’ PHP function
Publishes future post and make sure post ID has future post status.
Using WordPress ‘check_ajax_referer()’ PHP function
Verifies the Ajax request to prevent processing requests external of the blog.
Using WordPress ‘check_admin_referer()’ PHP function
Ensures intent by verifying that a user was referred from another admin page with the correct security nonce.
Using WordPress ‘current_datetime()’ PHP function
Retrieves the current time as an object using the site’s timezone.
Using WordPress ‘add_site_meta()’ PHP function
The `add_site_meta()` function in WordPress allows adding custom metadata to a specific site using its ID, meta key, value, and optionally making it unique
Using WordPress ‘add_settings_field()’ PHP function
Adds a new field to a section of a settings page.
Using WordPress ‘add_settings_error()’ PHP function
Registers a settings error to be displayed to the user.
Using WordPress ‘add_rewrite_rule()’ PHP function
Adds a rewrite rule that transforms a URL structure to a set of query vars.