* @param string $oname The option to check
* @param string $defaultOverride A default value returned if the option does not exist
* @param bool $ignoreHidden Whether to ignore the effects of $wgHiddenPrefs
- * @return string|null User's current value for the option
+ * @return string|array|int|null User's current value for the option
* @see getBoolOption()
* @see getIntOption()
*/