diff -r 3d4e9c994f10 -r a86126ab1dd4 wp/wp-admin/network/site-themes.php
--- a/wp/wp-admin/network/site-themes.php	Tue Oct 22 16:11:46 2019 +0200
+++ b/wp/wp-admin/network/site-themes.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 manage themes for this site.' ) );
@@ -136,7 +136,7 @@
 				 * @param array  $items        The items to take the action on.
 				 * @param int    $site_id      The site ID.
 				 */
-				$referer = apply_filters( "handle_network_bulk_actions-{$screen}", $referer, $action, $themes, $id );
+				$referer = apply_filters( "handle_network_bulk_actions-{$screen}", $referer, $action, $themes, $id ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
 			} else {
 				$action = 'error';
 				$n      = 'none';
@@ -158,21 +158,21 @@
 	exit;
 }
 
-if ( isset( $_GET['action'] ) && 'update-site' == $_GET['action'] ) {
+if ( isset( $_GET['action'] ) && 'update-site' === $_GET['action'] ) {
 	wp_safe_redirect( $referer );
-	exit();
+	exit;
 }
 
 add_thickbox();
 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';
 $submenu_file = 'sites.php';
 
-require( ABSPATH . 'wp-admin/admin-header.php' ); ?>
+require_once ABSPATH . 'wp-admin/admin-header.php'; ?>
 
 <div class="wrap">
 <h1 id="edit-site"><?php echo $title; ?></h1>
@@ -188,21 +188,23 @@
 
 if ( isset( $_GET['enabled'] ) ) {
 	$enabled = absint( $_GET['enabled'] );
-	if ( 1 == $enabled ) {
+	if ( 1 === $enabled ) {
 		$message = __( 'Theme enabled.' );
 	} else {
+		/* translators: %s: Number of themes. */
 		$message = _n( '%s theme enabled.', '%s themes enabled.', $enabled );
 	}
 	echo '<div id="message" class="updated notice is-dismissible"><p>' . sprintf( $message, number_format_i18n( $enabled ) ) . '</p></div>';
 } elseif ( isset( $_GET['disabled'] ) ) {
 	$disabled = absint( $_GET['disabled'] );
-	if ( 1 == $disabled ) {
+	if ( 1 === $disabled ) {
 		$message = __( 'Theme disabled.' );
 	} else {
+		/* translators: %s: Number of themes. */
 		$message = _n( '%s theme disabled.', '%s themes disabled.', $disabled );
 	}
 	echo '<div id="message" class="updated notice is-dismissible"><p>' . sprintf( $message, number_format_i18n( $disabled ) ) . '</p></div>';
-} elseif ( isset( $_GET['error'] ) && 'none' == $_GET['error'] ) {
+} elseif ( isset( $_GET['error'] ) && 'none' === $_GET['error'] ) {
 	echo '<div id="message" class="error notice is-dismissible"><p>' . __( 'No theme selected.' ) . '</p></div>';
 }
 ?>
@@ -224,4 +226,4 @@
 </form>
 
 </div>
-<?php include( ABSPATH . 'wp-admin/admin-footer.php' ); ?>
+<?php require_once ABSPATH . 'wp-admin/admin-footer.php'; ?>