- *
- * @param string $option Option name. Expected to not be SQL-escaped.
- * @param mixed $value Option value. Must be serializable if non-scalar. Expected to not be SQL-escaped.
+ * @since 4.2.0 The `$autoload` parameter was added.
+ *
+ * @param string $option Option name. Expected to not be SQL-escaped.
+ * @param mixed $value Option value. Must be serializable if non-scalar. Expected to not be SQL-escaped.
+ * @param string|bool $autoload Optional. Whether to load the option when WordPress starts up. For existing options,
+ * `$autoload` can only be updated using `update_option()` if `$value` is also changed.
+ * Accepts 'yes' or true to enable, 'no' or false to disable. For non-existent options,
+ * the default value is 'yes'.