ass-wp-xmlrpc-server.php ` |  Sets up blog options property.   
[ wpdb::query() ](https://developer.wordpress.org/reference/classes/wpdb/query/) ` wp-includes/class-wpdb.php ` |  Performs a database query, using current database connection.   
[ wpdb::set_sql_mode() ](https://developer.wordpress.org/reference/classes/wpdb/set_sql_mode/) ` wp-includes/class-wpdb.php ` |  Changes the current SQL mode, and ensures its WordPress compatibility.   
[ WP_Widget::display_callback() ](https://developer.wordpress.org/reference/classes/wp_widget/display_callback/) ` wp-includes/class-wp-widget.php ` |  Generates the actual widget content (Do NOT override).   
[ WP_Widget::update_callback() ](https://developer.wordpress.org/reference/classes/wp_widget/update_callback/) ` wp-includes/class-wp-widget.php ` |  Handles changed settings (Do NOT override).   
[ WP_Widget::form_callback() ](https://developer.wordpress.org/reference/classes/wp_widget/form_callback/) ` wp-includes/class-wp-widget.php ` |  Generates the widget control form (Do NOT override).   
[ dynamic_sidebar() ](https://developer.wordpress.org/reference/functions/dynamic_sidebar/) ` wp-includes/widgets.php ` |  Display dynamic sidebar.   
[ is_active_sidebar() ](https://developer.wordpress.org/reference/functions/is_active_sidebar/) ` wp-includes/widgets.php ` |  Determines whether a sidebar contains widgets.   
[ wp_get_sidebars_widgets() ](https://developer.wordpress.org/reference/functions/wp_get_sidebars_widgets/) ` wp-includes/widgets.php ` |  Retrieve full list of sidebars and their widget instance IDs.   
[ the_widget() ](https://developer.wordpress.org/reference/functions/the_widget/) ` wp-includes/widgets.php ` |  Output an arbitrary widget as a template tag.   
[ register_sidebar() ](https://developer.wordpress.org/reference/functions/register_sidebar/) ` wp-includes/widgets.php ` |  Builds the definition for a single sidebar and returns the ID.   
[ get_post_reply_link() ](https://developer.wordpress.org/reference/functions/get_post_reply_link/) ` wp-includes/comment-template.php ` |  Retrieves HTML content for reply to post link.   
[ get_cancel_comment_reply_link() ](https://developer.wordpress.org/reference/functions/get_cancel_comment_reply_link/) ` wp-includes/comment-template.php ` |  Retrieves HTML content for cancel comment reply link.   
[ get_comment_id_fields() ](https://developer.wordpress.org/reference/functions/get_comment_id_fields/) ` wp-includes/comment-template.php ` |  Retrieves hidden input HTML for replying to comments.   
[ wp_list_comments() ](https://developer.wordpress.org/reference/functions/wp_list_comments/) ` wp-includes/comment-template.php ` |  Displays a list of comments.   
[ comment_form() ](https://developer.wordpress.org/reference/functions/comment_form/) ` wp-includes/comment-template.php ` |  Outputs a complete commenting form for use within a template.   
[ get_trackback_url() ](https://developer.wordpress.org/reference/functions/get_trackback_url/) ` wp-includes/comment-template.php ` |  Retrieves the current post’s trackback URL.   
[ comments_open() ](https://developer.wordpress.org/reference/functions/comments_open/) ` wp-includes/comment-template.php ` |  Determines whether the current post is open for comments.   
[ pings_open() ](https://developer.wordpress.org/reference/functions/pings_open/) ` wp-includes/comment-template.php ` |  Determines whether the current post is open for pings.   
[ comments_template() ](https://developer.wordpress.org/reference/functions/comments_template/) ` wp-includes/comment-template.php ` |  Loads the comment template specified in $file.   
[ comments_popup_link() ](https://developer.wordpress.org/reference/functions/comments_popup_link/) ` wp-includes/comment-template.php ` |  Displays the link to the comments for the current post ID.   
[ get_comment_reply_link() ](https://developer.wordpress.org/reference/functions/get_comment_reply_link/) ` wp-includes/comment-template.php ` |  Retrieve