diff --git a/wp-includes/formatting.php b/wp-includes/formatting.php
index 956e8290e2..50b43a5175 100644
--- a/wp-includes/formatting.php
+++ b/wp-includes/formatting.php
@@ -4883,7 +4883,11 @@ function sanitize_option( $option, $value ) {
 			break;
 
 		case 'blog_charset':
-			$value = preg_replace( '/[^a-zA-Z0-9_-]/', '', $value ); // Strips slashes.
+			if ( is_string( $value ) ) {
+				$value = preg_replace( '/[^a-zA-Z0-9_-]/', '', $value ); // Strips slashes.
+			} else {
+				$value = '';
+			}
 			break;
 
 		case 'blog_public':
@@ -4918,7 +4922,11 @@ function sanitize_option( $option, $value ) {
 			break;
 
 		case 'gmt_offset':
-			$value = preg_replace( '/[^0-9:.-]/', '', $value ); // Strips slashes.
+			if ( is_numeric( $value ) ) {
+				$value = preg_replace( '/[^0-9:.-]/', '', $value ); // Strips slashes.
+			} else {
+				$value = '';
+			}
 			break;
 
 		case 'siteurl':
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 88957605b1..54baec6059 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.3-beta3-56131';
+$wp_version = '6.3-beta3-56132';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.