fix: split isset() to single argument per call

Author: stodorovic

plugins/multisite.php

@@ -22,13 +22,17 @@ function wp_super_cache_blogs_field( $name, $blog_id ) {
 
 	$blog_id = (int) $blog_id;
 
-	if ( isset( $_GET['id'] ) && isset( $_GET['action'] ) && isset( $_GET['_wpnonce'] ) // phpcs:ignore WordPress.Security.NonceVerification.Recommended
-		&& filter_input( INPUT_GET, 'id', FILTER_VALIDATE_INT ) === $blog_id
-		&& wp_verify_nonce( sanitize_text_field( wp_unslash( $_GET['_wpnonce'] ) ), 'wp-cache' . $blog_id ) // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
+	$get_id     = filter_input( INPUT_GET, 'id', FILTER_VALIDATE_INT );
+	$get_action = filter_input( INPUT_GET, 'action', FILTER_SANITIZE_FULL_SPECIAL_CHARS );
+	$get_nonce  = filter_input( INPUT_GET, '_wpnonce', FILTER_SANITIZE_FULL_SPECIAL_CHARS );
+
+	if ( $get_id === $blog_id
+		&& $get_nonce
+		&& wp_verify_nonce( $get_nonce, 'wp-cache' . $blog_id )
 	) {
-		if ( 'disable_cache' === filter_input( INPUT_GET, 'action' ) ) {
+		if ( 'disable_cache' === $get_action ) {
 			add_blog_option( $blog_id, 'wp_super_cache_disabled', 1 );
-		} elseif ( 'enable_cache' === filter_input( INPUT_GET, 'action' ) ) {
+		} elseif ( 'enable_cache' === $get_action ) {
 			delete_blog_option( $blog_id, 'wp_super_cache_disabled' );
 		}
 	}