diff --git a/wp-includes/class-wp-object-cache.php b/wp-includes/class-wp-object-cache.php
index cd84b17753..8136ea3ad9 100644
--- a/wp-includes/class-wp-object-cache.php
+++ b/wp-includes/class-wp-object-cache.php
@@ -156,7 +156,7 @@ class WP_Object_Cache {
 		$message = is_string( $key )
 			? __( 'Cache key must not be an empty string.' )
 			/* translators: %s: The type of the given cache key. */
-			: sprintf( __( 'Cache key must be integer or non-empty string, %s given.' ), $type );
+			: sprintf( __( 'Cache key must be an integer or a non-empty string, %s given.' ), $type );
 
 		_doing_it_wrong(
 			sprintf( '%s::%s', __CLASS__, debug_backtrace( DEBUG_BACKTRACE_IGNORE_ARGS, 2 )[1]['function'] ),
diff --git a/wp-includes/functions.php b/wp-includes/functions.php
index e3e281b1d6..2112323704 100644
--- a/wp-includes/functions.php
+++ b/wp-includes/functions.php
@@ -7034,24 +7034,28 @@ function _get_non_cached_ids( $object_ids, $cache_key ) {
 }
 
 /**
- * Checks whether the given cache ID is either an integer or iterger-like strings.
- * Both `16` and `"16"` are considered valid, other numeric types and numeric
- * strings (`16.3` and `"16.3"`) are considered invalid.
+ * Checks whether the given cache ID is either an integer or an integer-like string.
+ *
+ * Both `16` and `"16"` are considered valid, other numeric types and numeric strings
+ * (`16.3` and `"16.3"`) are considered invalid.
  *
  * @since 6.3.0
  *
- * @param mixed $object_id The cache id to validate.
- * @return bool Whether the given $object_id is a valid cache id.
+ * @param mixed $object_id The cache ID to validate.
+ * @return bool Whether the given $object_id is a valid cache ID.
  */
 function _validate_cache_id( $object_id ) {
-	// Unfortunately filter_var() is considered an optional extension
+	/*
+	 * filter_var() could be used here, but the `filter` PHP extension
+	 * is considered optional and may not be available.
+	 */
 	if ( is_int( $object_id )
 		|| ( is_string( $object_id ) && (string) (int) $object_id === $object_id ) ) {
 		return true;
 	}
 
-	/* translators: %s: The type of the given object id. */
-	$message = sprintf( __( 'Object id must be integer, %s given.' ), gettype( $object_id ) );
+	/* translators: %s: The type of the given object ID. */
+	$message = sprintf( __( 'Object ID must be an integer, %s given.' ), gettype( $object_id ) );
 	_doing_it_wrong( '_get_non_cached_ids', $message, '6.3.0' );
 
 	return false;
diff --git a/wp-includes/version.php b/wp-includes/version.php
index a3e12ee04b..c2ab5f266f 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.3-alpha-55547';
+$wp_version = '6.3-alpha-55549';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.