diff -r 3d4e9c994f10 -r a86126ab1dd4 wp/wp-admin/network/site-users.php
--- a/wp/wp-admin/network/site-users.php	Tue Oct 22 16:11:46 2019 +0200
+++ b/wp/wp-admin/network/site-users.php	Tue Dec 15 13:49:49 2020 +0100
@@ -8,7 +8,7 @@
  */
 
 /** Load WordPress Administration Bootstrap */
-require_once( dirname( __FILE__ ) . '/admin.php' );
+require_once __DIR__ . '/admin.php';
 
 if ( ! current_user_can( 'manage_sites' ) ) {
 	wp_die( __( 'Sorry, you are not allowed to edit this site.' ), 403 );
@@ -77,6 +77,7 @@
 						$update = 'err_add_fail';
 					} else {
 						$update = 'newuser';
+
 						/**
 						 * Fires after a user has been created via the network site-users.php page.
 						 *
@@ -178,26 +179,28 @@
 			}
 			check_admin_referer( 'bulk-users' );
 			$userids = $_REQUEST['users'];
+
 			/** This action is documented in wp-admin/network/site-themes.php */
-			$referer = apply_filters( 'handle_network_bulk_actions-' . get_current_screen()->id, $referer, $action, $userids, $id );
-			$update  = $action;
+			$referer = apply_filters( 'handle_network_bulk_actions-' . get_current_screen()->id, $referer, $action, $userids, $id ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
+
+			$update = $action;
 			break;
 	}
 
 	wp_safe_redirect( add_query_arg( 'update', $update, $referer ) );
-	exit();
+	exit;
 }
 
 restore_current_blog();
 
-if ( isset( $_GET['action'] ) && 'update-site' == $_GET['action'] ) {
+if ( isset( $_GET['action'] ) && 'update-site' === $_GET['action'] ) {
 	wp_safe_redirect( $referer );
-	exit();
+	exit;
 }
 
 add_screen_option( 'per_page' );
 
-/* translators: %s: site name */
+/* translators: %s: Site title. */
 $title = sprintf( __( 'Edit Site: %s' ), esc_html( $details->blogname ) );
 
 $parent_file  = 'sites.php';
@@ -214,7 +217,7 @@
 	wp_enqueue_script( 'user-suggest' );
 }
 
-require( ABSPATH . 'wp-admin/admin-header.php' ); ?>
+require_once ABSPATH . 'wp-admin/admin-header.php'; ?>
 
 <script type="text/javascript">
 var current_site_id = <?php echo $id; ?>;
@@ -363,4 +366,4 @@
 <?php endif; ?>
 </div>
 <?php
-require( ABSPATH . 'wp-admin/admin-footer.php' );
+require_once ABSPATH . 'wp-admin/admin-footer.php';