*
* If the a variable is unset in $_SERVER, it should be unset in $vars.
*
- * @param $vars A subset of $_SERVER.
- * @param $extWhitelist Extensions which are allowed, assumed harmless.
+ * @param $vars array A subset of $_SERVER.
+ * @param $extWhitelist array Extensions which are allowed, assumed harmless.
* @return bool
*/
public static function areServerVarsBad( $vars, $extWhitelist = array() ) {