WP_MS_Sites_List_Table::extra_tablenav( string $which )
Extra controls to be displayed between bulk actions and pagination.
Parameters
- $which
-  (string) (Required) The location of the extra table nav markup: 'top' or 'bottom'. 
Source
File: wp-admin/includes/class-wp-ms-sites-list-table.php
protected function extra_tablenav( $which ) {
		?>
		<div class="alignleft actions">
		<?php
		if ( 'top' === $which ) {
			ob_start();
			/**
			 * Fires before the Filter button on the MS sites list table.
			 *
			 * @since 5.3.0
			 *
			 * @param string $which The location of the extra table nav markup: 'top' or 'bottom'.
			 */
			do_action( 'restrict_manage_sites', $which );
			$output = ob_get_clean();
			if ( ! empty( $output ) ) {
				echo $output;
				submit_button( __( 'Filter' ), '', 'filter_action', false, array( 'id' => 'site-query-submit' ) );
			}
		}
		?>
		</div>
		<?php
		/**
		 * Fires immediately following the closing "actions" div in the tablenav for the
		 * MS sites list table.
		 *
		 * @since 5.3.0
		 *
		 * @param string $which The location of the extra table nav markup: 'top' or 'bottom'.
		 */
		do_action( 'manage_sites_extra_tablenav', $which );
	}  Changelog
| Version | Description | 
|---|---|
| 5.3.0 | Introduced. | 
    © 2003–2021 WordPress Foundation
Licensed under the GNU GPLv2+ License.
    https://developer.wordpress.org/reference/classes/wp_ms_sites_list_table/extra_tablenav